Vegetable Cultivar Descriptions for North America

Onion (M-Z), Lists 1-26 Combined

Edited by Michael J. Havey

USDA/ARS, Department of Horticulture
University of Wisconsin
Madison, WI 53706

Mackinaw - Breeder and vendor: Dakota. Characteristics: hard storage, long day yellow. Resistance: tolerance to pink root, fusarium. Similar: Daragon. 1993.

Madero (SO 1420) - Breeder: Rick Watson. Vendor: Sunseeds. Parentage: F1 hybrid. Characteristics: intermediate type yellow, produces large sized globe to somewhat top-shaped bulbs; high percentage of single centered bulbs when well grown. Resistance: pink root. Similar: Cimerron. Adaptation: intermediate and Sweet Spanish onion growing areas. 2000.

Madrid (AX 2246) - Breeder: K.McLellan. Vendor: Aristogenes. Characteristics: outstanding vigor and yielding ability. Resistance: pink root. Similar: Vega. 1994.

Maestro (XPH 7022) - Breeder and vendor: Asgrow. Characteristics: overwintering, yellow skinned type, early maturity. Similar: Keepwell, Yellowstone. 1987.

Magnifico Hybrid - Breeder: Crookham Company, Caldwell, Idaho. Parentage: a long day limited on short storage type. Characteristics: exceptional bulb uniformity, high yielding ability and mild flavor; performs well from direct seeding or transplant. Adaptation: areas where Yellow Sweet Spanish populations are grown. 1953.

Magnum (77-924) - Breeder and vendor: Dessert Seed Co. Characteristics: F1 hybrid, extra large early Spanish type onion: excellent storage. Resistance: unknown. Similar: Fiesta. Adaptation: Spanish growing areas. 1979.

Majestic (AX 1507) - Breeder: K.McLellan. Vendor: Aristogenes. Characteristics: consistent, very heavy yielder of extra large, Spanish type bulbs with uniformity, excellent keeping ability; light colored skins. Resistance: strong to pink root. 1992.

Majesty - Breeder and vendor: ARCO/Dessert. Resistance: pink root. 1964.

Mambo (Sunex1488) - Breeder: R.Watson. Vendor: Sunseeds. Characteristics: dark red color extends to center of bulb when well cured, large bulb size. Similar: Tango. 1992.

Mammoth (SSC1497) - Breeder and vendor: Shamrock. Characteristics: a medium-late maturity, intermediate day onion, very large, highly single-centered bulbs that are brown colored. Similar: Maya. 1992.

Marathon (HMX 2621) - Breeder and vendor: Harris Moran. 1989.

Maricopa - Breeder and vendor: Golden Valley. Characteristics: yellow Spanish hybrid, better storability. 1991.

Maritime (XPH3326) - Breeder: S.Hendricks. Vendor: Asgrow. Characteristics: high yield, trim necks, high percentage of colossal bulbs. Similar: Vega, Cache. 1994.

Mars (PSX80888) - Breeder: R.Engle. Vendor: Petoseed. Characteristics: long day type, bright red globe, white flesh, large medium jumbos. 1991.

Marvel (Sunex1486) - Breeder: R.Watson. Vendor: Sunseeds. Characteristics: early maturity, vigorous growth, large bulb size. 1992.

Matador (NCX 103) - Breeder and vendor: FMC Corp. Parentage: F1 hybrid, male P74-9-32 from Utah, female is proprietary. Characteristics: deep globe, golden brown, tight sealed bulbs with fine necks, medium size (2" in diameter) with intermediate storage properties. Similar: Downing Yellow Globe. Adaptation: muck soils of New York, Michigan, Wisconsin, and Canada. 1976.

Maya (XPH 739) - Breeder and vendor: Asgrow Seed Co. Characteristics: F1 hybrid, midseason, jumbo, long-day Spanish hybrid, with excellent storage potential. Similar: Vega. Adaptation: northwestern United States (Idaho, Oregon, and Washington), Colorado, central California, and northern Texas. 1985.

Mercedes (PS2789) - Breeder: A.Burkett. Vendor: Petoseed. Characteristics: short day hybrid, yellow, good scales, early, good storage, firm, small necks. Resistance: pink root. 1994.

Mercury - Breeder: R.Engle. Vendor: Petoseed. Characteristics: eastern U.S., long day, red type. 1993.

Mesa - Breeder and vendor: Dakota. Characteristics: hybrid yielding, overwintering. Resistance: pink root. 1994.

Michigan Sweet Spanish - Breeder: Michigan State College, East Lansing. Vendor: Ferry-Morse Seed Co. Parentage: selection from Valencia Sweet Spanish, imported seed. Characteristics: very good skin and color, very good keeper. Similar: Globe. Adaptation: dry muck; midwestern United States. 1945.

Midstar (ARCO 1607) - Breeder and vendor: ARCO Seed Co. Characteristics: F1 hybrid, vigorous, uniform, white onion with high frequency of single-centered bulbs; intermediate day length response; limited storage potential. Resistance: tolerance to pink root. Similar: New Mexico Grano. Adaptation: northern Texas, New Mexico, and the San Joaquin Valley of California. 1986.

Millennium (SXO 1434) - Breeder: R. Watson. Vendor: Sunseeds. Parentage: F1 hybrid. Resistance: Pink root and Fusarium. Similar: Paragon. Adaptation: long day. 1997.

Mira (XP 15040) - Breeder and vendor: Seminis-Asgrow. Parentage: F1 hybrid. Resistance: Pink root and Fusarium. Similar: Bullreg XXX. Adaptation: Idaho, Colorado, Washington, Utah.

Mohawk (D1011) - Breeder and vendor: Joseph Harris Co. Characteristics: F1 hybrid, early yellow, dark colored and high yielding; short storage. Similar: Abundance. Adaptation: northern long-day areas.

Mohegan - Breeder and vendor: Dakota. Characteristics: early maturing, northern U.S., storage onion. Resistance: pink root, fusarium. Similar: Valient. 1992.

Mojave - Breeder and vendor: Dakota. Characteristics: midseason, high yielding, white sweet Spanish. Resistance: pink root. Similar: Sterling. 1992.

Monarch (SSC-2246) - Breeder and vendor: Shamrock. Characteristics: late maturing, intermediate day, large, globe-shaped, dark brown bulbs. Similar: Maya. 1991.

Montana (XP 8417) - Breeder and vendor: Seminis-Asgrow. Parentage: F1 hybrid. Similar: Criola. Adaptation: southern Brazil.

Moonshine - Breeder and vendor: Dakota. Characteristics: overwintering white type. Resistance: pink root. Similar: Midstar. 1993.

Mucker (DEXP 729) - Breeder and vendor: Dessert Seed Co. Characteristics: hybrid, long storage, high yield and high globe. Similar: Spartan Banner. Adaptation: northern and central mucks. 1974.

Mustang (D1910) - Breeder: Joseph Harris Co. Characteristics: F1 hybrid, yellow, hard, good storage. Similar: Downing Yellow Globe. Adaptation: northern long-day onion areas. 1965.

Navaho - Breeder and vendor: Golden Valley. Characteristics: yellow Spanish type. Resistance: tolerance to pink root, fusarium. 1991.

Neetco Nugget (B and K Expt. Hyb. number 1]) - Breeder and vendor: B and K Prepack. Characteristics: F1 hybrid, Yellow Globe type, medium brown, heavy scaled, uniform shape, excellent storage life, good ringability. Similar: Danvers Yellow Globe. Adaptation: areas where long-day storage type onions are grown. 1972.

New Mexico Early Grano - Breeder: New Mexico State Expt. Stn. Characteristics: derived from Balbosa. 1930.

Ninja (MR7600) - Breeder and vendor: Rispens. Characteristics: 114 day maturity, good scale retention for mechanical harvest. Resistance: pink root, fusarium. Similar: Voyager. 1992.

Nitro - Breeder and vendor: Rispens. Characteristics: excellent long-term storage, derived from cross of hard by hard bulb, high yields. Resistance: pink root, fusarium. Similar: Fortress, Duration. 1994.

Nora Fronteira (XP 6803) - Breeder: David Dean. Vendor: Seminis-Asgrow. Parentage: F1 hybrid. Characteristics: medium yellow, globe shaped, medium size, waxy foliage, pungent, not for jumbo production. Similar: Serrano. Adaptation: Brazil. 2000.

Norseman - Breeder and vendor: Stokes. Characteristics: longer storage, better skin retention than Norstar. Resistance: field tolerance to pink root. 1991.

Norstar - Breeder and vendor: Takii. Characteristics: early maturity, yellow type, for cool weather production. Resistance: tolerance to botrytis, downy mildew, soft rot, basal rot. 1988.

North Star (FMX 220W1) - Breeder: K.McLellan. Vendor: Ferry-Morse. Characteristics: early midseason, good yielding, long storage type, hard flesh, heavy skins, small necks, medium bronze with high gloss. Resistance: fusarium basal rot. Similar: Fusario hybrids. 1983.

Northern Oak - Breeder and vendor: Stokes. 1988.

Nova - Breeder: L.Kyle. Vendor: Neuman. Characteristics: early maturity, flat yellow bulbs, Granex type. Resistance: bolting, pink root. 1988.

Nugget - Breeder: University of Wisconsin, Madison, in cooperation with USDA and Iowa Agric. Expt. Sta., Ames. Vendor: Jung Seed Co. Parentage: Iowa 736A x Wisconsin 101B. Characteristics: F1 hybrid, early maturity, long storage; bulb firm, globe shaped, bronze color, good scale retention. Similar: Autumn Spice and Epoch. Adaptation: Wisconsin. W.H. Gabelman, Sept. 1962.

Number 6404 - Breeder and vendor: Takii. Characteristics: long day storage type. Resistance: tolerance to fusarium basal rot, bacterial leaf spot. Adaptation: western U.S. 1991.

Number 8911 - Breeder and vendor: Takii. Characteristics: long day storage type. Resistance: tolerance to fusarium basal rot, pink root, bacterial leaf spot. Adaptation: western U.S. 1991.

NuMex Bolo - Breeder: J.Corgan. Vendor: New Mexico State Expt. Stn. Characteristics: yellow intermediate day onion, high yield, firm bulbs. Resistance: excellent to pink root. 1994.

NuMex BR1 - Breeder: J.Corgan. Vendor: New Mexico State Expt. Stn. Parentage: selected from Texas Early Grano 502 PRR. Characteristics: yellow short day onion, high yield, excellent bolting resistance. 1983.

NuMex Casper - Breeder: J.Corgan. Vendor: New Mexico State Expt. Stn. Characteristics: white intermediate day onion, excellent scale color. Resistance: pink root. 1992.

NuMex Centric - Breeder: J.Corgan. Vendor: New Mexico State Expt. Stn. Characteristics: yellow early long day onion, sweet spanish type, high yield, high percentage of single centers. Resistance: excellent to pink root. 1995.

NuMex Crispy - Breeder: J.Corgan. Vendor: New Mexico State Expt. Stn. Parentage: from Temprana x Yellow Granex. Characteristics: white short day onion, low pungency, excellent scale color. Resistance: excellent to pink root. 1995.

NuMex Dulce - Breeder: J.Corgan. Vendor: New Mexico State Expt. Stn. Parentage: from NuMex Starlite. Characteristics: yellow short day onion, low pungency. Resistance: excellent to pink root. 1995.

NuMex Jose Fernandez - Breeder: J.Corgan. Vendor: New Mexico State Expt. Stn. Characteristics: yellow intermediate day onion, high yield. Resistance: excellent to pink root. 1994.

NuMex Luna - Breeder: J.Corgan. Vendor: New Mexico State Expt. Stn. Characteristics: yellow intermediate day onion, high yield, firm bulbs. Resistance: pink root. 1995.

NuMex Mesa - Breeder: J.Corgan. Vendor: New Mexico State Expt. Stn. Parentage: from NuMex BR1 x Buffalo. Characteristics: yellow short day onion, nice scale, firm bulbs, excellent bolting resistance. Resistance: excellent to pink root. 1995.

NuMex Starlite - Breeder: J.Corgan. Vendor: New Mexico State Expt. Stn. Parentage: from Texas Grano 502 PRR. Characteristics: yellow short day onion, high yield, large bulbs, low pungency, good bolting resistance. Resistance: excellent to pink root. 1990.

NuMex Sundial - Breeder: J.Corgan. Vendor: New Mexico State Expt. Stn. Parentage: selected from Ben Shemen. Characteristics: yellow intermediate day onion, high yield, hard bulb. Resistance: excellent to pink root. 1987.

NuMex Sunlite - Breeder: J.Corgan. Vendor: New Mexico State Expt. Stn. Parentage: selected from Texas Early Grano 502 PRR. Characteristics: yellow short day onion, high yield, uniform size and shape, excellent bolting resistance. Resistance: excellent to pink root. 1987.

NuMex Suntop - Breeder: J.Corgan. Vendor: New Mexico State Expt. Stn. Parentage: selected from Ben Shemen. Characteristics: yellow intermediate day onion, high yield, hard bulb. Resistance: excellent to pink root. 1987.

NuMex Sweetpak - Breeder: J.Corgan. Vendor: New Mexico State Expt. Stn. Characteristics: yellow short day onion, early maturing grano type, low pungency. Resistance: excellent to pink root. 1997.

NuMex Vado - Breeder: J.Corgan. Vendor: New Mexico State Expt. Stn. Characteristics: yellow short day onion, high yield, firm bulbs. Resistance: pink root. 1995.

Nutmeg (D1951) - Breeder and vendor: Joseph Harris Co. Characteristics: F1 hybrid, early (100 days), long-day, hard, yellow onion, medium size, deep globe, small neck, good skin color, for long storage. Resistance: tolerance to fusarium basal rot. Similar: Autumn Spice. Adaptation: northern areas and Canada. 1974.

Omega - Breeder: Nickerson-Zwaan. Vendor: Shamrock. Parentage: F1 hybrid. Characteristics: 5-10 days earlier than Brown Beauty where tested in Colorado. Resistance: pink root, tolerance to fusarium. Similar: Brown Beauty. Adaptation: California, Oregon, Idaho, Colorado, Washington. 1988.

Omni (SUNEX1505) - Breeder and vendor: Sunseeds. Characteristics: very early maturity, firm globe, white. Resistance: pink root. Similar: Rio Unico. 1995.

Ontario (XP 62) - Breeder and vendor: Asgrow Seed Co. Parentage: closed pedigree involving USDA and Asgrow inbreds. Characteristics: F1 hybrid, early maturing main season storage type. Similar: Premier. Adaptation: long-day onion areas. Asgrow's "Your Crops-What's New for 65," Fall 1964.

Ontario M (XP 195) - Breeder and vendor: Asgrow Seed Co. Characteristics: F1 hybrid, medium-sized, globe-shaped hybrid for crate and field box storage from mid to late winter. Similar: Ontario. Adaptation: long-day areas in the United States, Canada, and overseas. 1976.

Orange Countess (XPH 3465) - Breeder: S.Hendricks. Vendor: Asgrow. Characteristics: full season Spanish hybrid, excellent storage. Similar: Cima. 1995.

Oro (Super Elite) - Breeder and vendor: Dessert Seed Co. Characteristics: F1 hybrid, deep globe with golden-brown scale color; refined necks and long storage capability. Similar: Elite. Adaptation: northern onion-growing areas. 1982.

Oro Grande (FMX 70W6) - Breeder: E.Wheeler. Vendor: Ferry-Morse. Characteristics: hybrid, high yield, intermediate to long day, high percentage of jumbos, bulbs globe to blocky globe, medium bronze skins, medium hard firmness, flesh is white, fairly mild, Spanish type. Similar: Vega. 1985.

Oswego - Breeder and vendor: Dakota. Characteristics: long day, yellow storage type. Resistance: pink root, fusarium. Similar: Legacy. 1993.

Ottawa - Breeder and vendor: Dakota. Characteristics: yellow storage type. Similar: Legacy. 1993.

Outrigger (XP 15067) - Breeder and vendor: Seminis-Asgrow. Parentage: F1 hybrid. Similar: Brown Baron. Adaptation: F1 hybridU.S.

Pacesetter (D 2810) - Breeder and vendor: Joseph Harris Co. Characteristics: F1 hybrid, yellow storage type; good keeper, medium size and yield. Similar: Downing Yellow Globe. Adaptation: northern long-day onion areas. 1963.

Palomino (Granny-X) - Breeder and vendor: Shamrock. Characteristics: short day, main season, yellow, flat globe. Resistance: pink root, bolting. Similar: Texas Grano 502. 1989.

Paradise PRR - Breeder and vendor: ARCO Seed Co. Characteristics: open pollinated. Resistance: pink root. Adaptation: indeterminate onion areas. PVP certificate number 8100129. 1981.

Paragon (DEXP 1317-1) - Breeder and vendor: ARCO Seed Co. Characteristics: F1 hybrid, early maturity with excellent storage quality and very hard flesh; uniform globe with medium brown scales that adhere well in storage. Similar: Downing Yellow Globe. Adaptation: northern onion-growing areas. 1986.

Paydirt (Hy. 1001) - Breeder and vendor: Northup, King and Co. Characteristics: hybrid, dark skin, maturing slightly later and longer than Copper Gem. Adaptation: long days. 1969.

Payette (PS74089) - Breeder: R.Engle. Vendor: Petoseed. Characteristics: yellow sweet Spanish type, long term storage, attractive scale color and retention, 120 day maturity. Resistance: pink root. Similar: Apex, Cima, Vega.

Payola (SSC 1001) - Breeder and vendor: Shamrock. Characteristics: short day, early maturity, large, tapered, yellow globe. Resistance: pink root, bolting. 1991.

Pedro (Hy. 126) - Breeder and vendor: Crookham Co. Characteristics: hybrid, high yielding late, good keeping, mechanical harvest; Spanish type. Resistance: tolerance to pink root. Adaptation: Spanish areas. 1968.

Pegasus (XPH6020) - Breeder: R.Jones. Vendor: Asgrow. Characteristics: hybrid, full season, Granex type, 10 days later than Granex 33, sweet mild flavor. Resistance: pink root. Similar: Granex 33. 1994.

Perfecto Blanco - Breeder: Northrup King and Company, Minneapolis. Parentage: selection out of White Sweet Spanish. Characteristics: long slender, blue-green stem; vigorous and productive; bulbs slowly. Northrup King Desc. catalog. 1957.

Perla - Breeder: L.Pike, Texas A and M University. Characteristics: short day, white onion, round to slightly flattened globe, excellent root system, excellent shipping ability. Resistance: pink root. Similar: New Mexico White Grano. PVP. 1989.

Pilot Hybrid - Breeder: Colorado Agric. Expt. Sta., Ft. Collins. Parentage: B2264A x B1340C Inbred out of Currier Sweet Spanish (Currier Sweet Spanish is an early maturing cultivar). Characteristics: high yields, uniform grade quality; matures same date as Mountain Danvers; deep globe shaped, copper colored; excellent storage type. Resistance: Purple Blotch disease and some resistance to pink root and storage diseases. Similar: Sweet Spanish. Adaptation: 150 to 155 days between killing frosts. Colo. Agric. Expt. Sta. Circ. Number 2-S.

Pima - Breeder and vendor: Golden Valley. Characteristics: hybrid, white Spanish type. 1991.

Pinnacle (PSX62088) - Breeder: R.Engle. Vendor: Petoseed. Characteristics: long day type, globe shape, jumbo size, mild flavor, bright brown scale. 1991.

Pioneer - Breeder: USDA, Colorado Agric. Expt. Sta., Ft. Collins, and Idaho Agric. Expt. Sta., Ames. Parentage: B15-108A x B2215C Yellow Globe Danvers inbred x Brigham Yellow Globe inbred. Characteristics: F1 hybrid, small plant size, gray-green foliage; bulbs medium size, dark yellow, globe shape, pungent, very firm; late maturity, long storage. Similar: Mountain Danvers. Adaptation: Western slope of Colorado. Elmo Davis, 16 April 1962.

Polaris - Breeder and vendor: Dakota. Characteristics: intermediate day, white type. Resistance: pink root. Similar: Midstar. 1993.

Popago - Breeder and vendor: Golden Valley. Characteristics: midseason white Spanish hybrid. 1991.

Precedent (SXO 1460) - Breeder: R. Watson. Vendor: Sunseeds. Parentage: F1 hybrid. Similar: Norstar. Adaptation: long day. 1997.

Premier - Breeder: USDA and Cornell University, Ithaca. Parentage: B2117A x B2215C Early Yellow Globe inbred x Brigham Yellow Globe inbred. Characteristics: F1 hybrid, plants medium large; nonglossy foliage; bulbs medium size, dark yellow, high globe, firm; late maturity, long storage. Similar: Brigham Yellow Globe. Adaptation: where Brigham Yellow Globe is grown. The F1 hybrid Onion Premier USDA release, 31 January. 1957.

Pre-Pak - Breeder and vendor: Rispens. Characteristics: long storage, very hard. Resistance: pink root, fusarium. Similar: Trapps #8. 1993.

Primavera (PS1685) - Breeder: A.Burkett. Vendor: Petoseed. Characteristics: short day hybrid yellow very early, good large Grano shaped bulb with small necks, excellent scale retention. 1989.

Prime Beauty (Experimental N) - Breeder and vendor: Ferry-Morse Seed Co. Characteristics: F1 hybrid, long, intermediate day length, hard fleshed, medium size globe with small neck and medium storage capacity; matures in season with Brown Beauty. Similar: Brown Beauty. Adaptation: areas where Brown Beauty is grown. 1976.

Primero PRR - Breeder and vendor: ARCO Seed Co. Characteristics: open pollinated. Resistance: pink root. Adaptation: short-day onion areas. 1968.

Progress (1956) - Breeder and vendor: Joseph Harris Co. Characteristics: F1 hybrid, early short storage, dark scales. Adaptation: northeastern organic soils. 1980.

Pronto (XP H621) - Breeder and vendor: Asgrow Seed Co. Parentage: closed pedigree involving USDA and Asgrow inbreds. Characteristics: F1 hybrid, a medium day cultivar for field seeding in place of sets. Similar: Early Harvest. Adaptation: northern medium and long-day onion areas. 1964.

Pronto S (X 196) - Breeder and vendor: Asgrow Seed Co. Parentage: closed pedigree USDA and Asgrow inbreds. Characteristics: F1 hybrid, early nonstorage type, primarily for market. Resistance: tolerant to pink root. Similar: Pronto. Adaptation: long-day areas. Asgrow's "Your Crops" Dec. 1967.

Prospector (586) - Breeder and vendor: Agway. Characteristics: hybrid, high yields on muck, moderate storage. Resistance: pink root. Similar: Autumn Spice. Adaptation: northeastern United States. Agway Catalog, 1970.

Pueblo - Breeder and vendor: Dakota. Characteristics: yellow, long day, hard storage type. Resistance: pink root, fusarium. Similar: Legacy. 1993.

Puma - Breeder and vendor: Golden Valley. Characteristics: early maturity, yellow hybrid, Spanish type. 1991.

Quantum Tioga (PS 663395) - Breeder: R. Maxwell. Vendor: Seminis-Petoseed. Parentage: F1 hybrid. Adaptation: long day. 1996.

Quest (PS760) - Breeder: R.Engle. Vendor: Petoseed. Characteristics: fresh market or processor type large yellow, globe shaped, main season maturity, excellent ringing quality, large sizes, high percentage single centers. Resistance: pink root. Similar: Valdez, Oro Grande.

R.K.W. - Breeder and vendor: Dessert Seed Company, El Centro, California. Parentage: out of Excel 986. Characteristics: deeper white onion than L 303, makes large deep flat onion. Similar: L303. 1952.

RAM-735 - Breeder: H. Rabinowitch and A. Harazy. Vendor: Hazera. Parentage: F1 hybrid.

RAM-763 - Breeder: H. Rabinowitch and A. Harazy. Vendor: Hazera. Parentage: F1 hybrid.

RAM-781 - Breeder: H. Rabinowitch and A. Harazy. Vendor: Hazera. Parentage: F1 hybrid.

Rampart (XP 77015) - Breeder and vendor: Seminis-Asgrow. Parentage: F1 hybrid. Characteristics: midseason storage minimum, approximately 110 days. Similar: Fortress. Adaptation: Quebec, Ontario, New York, Michigan, Wisconsin. 2000

Ranchero (SXO 1430) - Breeder: Rick Watson. Vendor: Sunseeds. Parentage: F1 hybrid. Characteristics: yellow Spanish type, very large bulb size, high percentage of single centered bulbs. Resistance: high tolerance to pink root and fusarium basal rot. Similar: Yellow Spanish Sweet. Adaptation: Sweet Spanish growing areas. 2000.

Red 21 - Breeder and vendor: California State Expt. Stn. Characteristics: same as California Early Red UC Number 1. 1943.

Red Bandana (HMX2326) - Breeder and vendor: Harris Moran. Characteristics: short day type, red in color, early maturity, jumbo size, globe shaped bulbs. Resistance: pink root. 1992.

Red Bluff - Breeder and vendor: Dakota. Characteristics: intermediate day, red type. Resistance: pink root. 1993.

Red Burgermaster (PSX163537) - Breeder: R.Engle. Vendor: Petoseed. Characteristics: bright red, globe shape, large to jumbo sizes, attractive red and white flesh, good storage, good scales. Similar: Mars. 1994.

Red Caribe (113-203) - Breeder and vendor: Seminis-Petoseed. Parentage: open pollinated. Similar: Red Creole. Adaptation: Central America.

Red Comet PRR (Z303PRR) - Breeder: L.Kyle. Vendor: Neuman. Characteristics: hybrid, early maturity, flattened bulb, red short day type. Resistance: pink root, bolting, greening. 1989.

Red Commander PRR - Breeder and vendor: ARCO Seed Co. Parentage: F1 hybrid. Resistance: pink root. Adaptation: short-day onion areas. 1971.

Red Creole - Breeder and vendor: Dessert Seed Company, El Centro, California. Characteristics: F1 hybrid, bulbs high flat; red in color and pungent; outyields Red Creole by about 50%, but matures a few days later; stores 6 to 7 months. Resistance: purple blotch. Similar: Red Creole. Adaptation: short day regions and same areas as Red Creole. Dessert 8 June 1962.

Red Cross - Breeder and vendor: Takii. Characteristics: overwintering red onion. Resistance: tolerance to botrytis, downy mildew. 1988.

Red Delicious - Breeder and vendor: Burpee. Characteristics: globe shaped, milder flavor than smaller red globe types, long day onion, good for spring planted crop in most of the United States.

Red Delite (Crk W156) - Breeder: W.McDonald. Vendor: Crookham. Characteristics: hybrid, large sized bulb with uniform dark red interior and exterior color, bulbs uniform, globe shape, very high percentage single centers. Resistance: tolerance to pink root. Similar: Southport Red Globe. 1982.

Red Granex - Breeder and vendor: Dessert Seed Company, El Centro, California. Characteristics: F1 hybrid, bulbs large, dark red, mild, high flat in shape; excellent yield, matures at about the same time as Granex or a few days later. Resistance: some to purple blotch. Adaptation: short-day areas, the southern United States, and where Granex is grown. Dessert 1 June 1962.

Red Harvest (180RA) - Breeder and vendor: Dessert Seed Co. Characteristics: F1 hybrid, early long-day x short-day cross. Resistance: unknown. Similar: Early Harvest. Adaptation: wide. 1981.

Red Rider - Breeder and vendor: Rispen Seeds, Inc. Parentage: F1 hybrid. Characteristics: extraordinary dark with dark red exterior and interior color. Resistance: pink root. Similar: Red Wing. Adaptation: northwest and midwest U.S. 2000.

Red Star (PS1067) - Breeder: A.Burkett. Vendor: Petoseed. Characteristics: early Creole type, red. Similar: Red Creole, Red Pinoy. Resistance: pink root. 1994.

Red Zeppelin (XP 15300) - Breeder: Omar Diaz. Vendor: Seminis-Asgrow. Parentage: F1 hybrid Characteristics: deep red color, Tango maturity, uniform globe to tall globe shape, large size with long storage potential mid-season maturity. Adaptation: northeast U.S. 2000.

Redbird (4414) - Breeder: Robert L. Jones. Vendor: Ag Chem Services. Parentage: F1 hybrid. Adaptation: south Texas, northern Mexico.

Redbone (XP6013) - Breeder: R.Jones. Vendor: Asgrow. Characteristics: thick, flat, short day, red type, good color both interior and exterior, high percentage of single centers, good bolting resistance. Resistance: pink root. Similar: Ruby. PVP. 1990.

Redkeep (XP 7519022) - Breeder: David Dean. Vendor: Seminis-Asgrow. Parentage: F1 hybrid. Characteristics: red globe shape, hard storage onion, can be stored 4-6 months, dark red scales. Resistance: fusarium basal rot. Similar: Tango. Adaptation: New Zealand, Australia, South Africa. 2000.

Redman - Breeder: E.Wheeler. Vendor: Ferry-Morse. Characteristics: red, open pollinated population with good storage. 1985.

Redron (Flat Red) - Breeder and vendor: Dessert Seed Co. Characteristics: F1 hybrid, long day, semi flat, dark red; vigorous. Resistance: unknown. Similar: Red Wethersfield. Adaptation: long-day onion areas only. 1981.

Regal PRR - Breeder and vendor: ARCO Seed Co. Characteristics: open pollinated, early with excellent color. Resistance: pink root. Adaptation: short-day onion areas. PVP certificate number 8100130. 1980.

Regiment (XPH3804) - Breeder: S.Hendricks. Vendor: Asgrow. Characteristics: midseason hybrid Spanish type. Resistance: pink root, bolting, fusarium. Similar: Vega. 1994.

Reina Blanca PRR (Z506PRR) - Breeder: L.Kyle. Vendor: Neuman. Characteristics: hybrid, white, short day type. Resistance: pink root, bolting, greening. 1989.

Reina Roja (4416) - Breeder: Robert L. Jones. Vendor: Ag Chem Services. Parentage: F1 hybrid. Adaptation: south Texas and northern Mexico.

Renegade - Breeder and vendor: Dakota. Characteristics: yellow short day; not the same as Renegade from Rispens (1994). Resistance: pink root. Similar: Texas Early Grano. 1993.

Renegade - Breeder and vendor: Rispens. Characteristics: 115 day, Spanish by eastern, good size with very good storage and yield; not the same as Renegade from Dakota (1993). Resistance: tolerance to pink root, fusarium. Similar: Valiant. 1994.

Revere (XPH 92376) - Breeder and vendor: Crookham. Parentage: (PG-1xXP53-350)x Crookham inbred. Resistance: Pink root. Similar: Sweet Perfection. Adaptation: northwest U.S.

Rialto (XP73) - Breeder and vendor: Asgrow Seed Co. Characteristics: F1 hybrid, large bulbed for prompt shipment and medium storage. Resistance: pink root. Similar: Pronto S. Adaptation: wide. 1976.

Ricochet (XP 77022) - Breeder: Omar Diaz. Vendor: Seminis-Asgrow. Parentage: F1 hybrid. Characteristics: early, non-storage, approximately 90 days, globe shaped. Resistance: Fusarium basal rot, pink root. Similar: Norstar. Adaptation: Canada, New York, Michigan, Wisconsin. 2001.

Ringer Grano PRR - Breeder and vendor: ARCO Seed Co. Characteristics: open pollinated, high single-centered Grano. Resistance: pink root. Adaptation: short-day areas.

Ringking (RingGold) - Breeder: Idaho Agric. Expt. Serv., Parma. Parentage: hybrid, PG-1 prr 1 x P54-306 prr T1. Characteristics: early, large, slightly flat to high globe with thick, perfect circles and low incidence of multiple growing points; scale color index of 3; for use as a source for commercial onion ring and general purpose. Resistance: pink root. Adaptation: Yellow Sweet Spanish areas. 1971.

Ringmaker (Xp 102 or Xp Ringer) - Breeder and vendor: Crookham Co. Parentage: F1 hybrid, (closed male x P54-306 prr) x closed pollinator. Characteristics: early, mild, high yielding Spanish type designed for onion ring but also good for fresh market; will harvest mechanically with most equipment. Resistance: high tolerance to pink root and fusarium. Similar: Yellow Sweet Spanish. Adaptation: areas where Yellow Sweet Spanish are grown. 1975.

Rio Blanco Grande (RCSX 903) - Breeder: R.Kreizenbeck. Vendor: Rio Colorado. Characteristics: late white, which produces very large bulbs. Resistance: pink root. Similar: White Grano. 1987.

Rio Bravo (RCSL 1102) - Breeder: R.Kreizenbeck. Vendor: Rio Colorado. Characteristics: early maturity, Granex type, large deep bulbs, yellow color. Resistance: pink root, bolting. Similar: Granex 33. 1986.

Rio Corona (RCSX 1229) - Breeder: R.Kreizenbeck. Vendor: Rio Colorado. Characteristics: early maturity, intermediate daylength, good brown skin. Resistance: excellent tolerance to pink root. 1988.

Rio Durado - Breeder and vendor: Rio Colorado. Characteristics: hybrid, early maturity, intermediate day, yellow Spanish type. Resistance: pink root, bolting. 1989.

Rio Estrella (RCSX1466) - Breeder and vendor: Rio Colorado. Characteristics: hybrid, yellow, Grano type, unusual mildness, high seedling vigor, large uniform bulbs, earlier than 1015Y. Resistance: pink root, bolting. Similar: 1015Y. 1989.

Rio Hondo V.S. (RCSL 1317) - Breeder: R.Kreizenbeck. Vendor: Rio Colorado. Characteristics: sweeter taste than Rio Hondo, considered a sweet onion. Resistance: tolerance to pink root. Similar: Rio Hondo. 1987.

Rio Jefe (RCSL 1203) - Breeder: R.Kreizenbeck. Vendor: Rio Colorado. Characteristics: white Grano shape, producing large bulbs. Resistance: pink root. Similar: Robust. 1987.

Rio Nevada (RCSX9544) - Breeder and vendor: Rio Colorado. Characteristics: hybrid, white Grano, high seedling vigor, very large uniform bulbs, exhibits wide adaptability in growing regions. Resistance: pink root. Similar: Blanco Duro. 1989.

Rio Oso (RCSX 682) - Breeder: R.Kreizenbeck. Vendor: Rio Colorado. Characteristics: deep bronze, round bulb, very firm. Resistance: pink root. Similar: Ben Sheman. 1988.

Rio Plata (RCSL 1202) - Breeder: R.Kreizenbeck. Vendor: Rio Colorado. Characteristics: white, deep, Granex type, outstanding bolting resistance. Resistance: pink root. Similar: Early Supreme. 1968.

Rio Raji Red - Breeder and vendor: Rio Colorado. Characteristics: hybrid, early maturity, Granex type. Resistance: pink root, bolting. 1989.

Rio Redondo (RCSX9536) - Breeder and vendor: Rio Colorado. Characteristics: hybrid, white, Grano type, high seedling vigor, large uniform bulbs, one week earlier than Early White Supreme. Resistance: pink root, bolting. Similar: Rio Plata. 1989.

Rio Santiago (RCSX1445-16) - Breeder: R.Kreizenbeck. Vendor: Rio Colorado. Characteristics: round red hybrid, early maturing. Adaptation: New Mexico, Texas. 1989.

Rio Selecto (RCSX 1325) - Breeder: R.Kreizenbeck. Vendor: Rio Colorado. Characteristics: Grano type, early maturing. 1987.

Rio Sonora (RCSX 7704) - Breeder: R.Kreizenbeck. Vendor: Rio Colorado. Characteristics: Grano type, early maturing. 1989.

Rio Unico (RCSX9535) - Breeder and vendor: Rio Colorado. Characteristics: hybrid, white, Grano type, high seedling vigor, large uniform bulbs, onions tend to mature at the same time. Resistance: pink root, bolting. Similar: Robust. 1989.

Rio Verde PRR (RCSX 948) - Breeder: R.Kreizenbeck. Vendor: Rio Colorado. Characteristics: green bunching type, long white shanks, early maturity. Resistance: strong to pink root. Similar: White Sweet Spanish Valencia. 1987.

Rio Zorro (RCSX 1329) - Breeder: R.Kreizenbeck. Vendor: Rio Colorado. Characteristics: Grano type, late maturing. 1988.

Rip Van Winkle (227W2) - Breeder and vendor: Ferry-Morse Seed Co. Parentage: FM inbreds. Characteristics: early maturity coupled with good storage qualities. Similar: Spartan Sleeper. Adaptation: New York, Wisconsin, and Michigan, and Ontario and Quebec, Canada. 1985.

Riviera (XPH3746) - Breeder: R.Jones. Vendor: Asgrow. Characteristics: intermediate day length, yellow type, good vigor, large thick flat bulbs, low percentage of splits and doubles. Resistance: pink root. Similar: Cimarron. 1991.

Robust White PRR - Breeder and vendor: ARCO Seed Co. Characteristics: F1 hybrid, white type. Resistance: pink root. Adaptation: short-day onion regions. 1964.

Rochester Bronze - Breeder and vendor: L.P. Gunson Company, Rochester, New York. Parentage: selection out of Downing, for color and keeping qualities. Characteristics: long keeping qualities. Similar: Downing. Adaptation: northern tier of the United States. 1945.

Rojo (ARCO 407R) - Breeder and vendor: ARCO Seed Co. Characteristics: F1 hybrid, early, large, thick, flat bulbs with excellent exterior and interior color. Resistance: pink root. Similar: Red Granex. Adaptation: short-day onion areas. 1987.

Rosada Milenio (SXO 1530) - Breeder and vendor: Sunseeds. Parentage: F1 hybrid. Characteristics: pink hybrid short day onion, flattened globe shape, medium size, pungent, late cultivar, thick scales. Resistance: pink root and fusarium. Adaptation: South American market. 2000.

Ruby (BSF Red Globe) - Breeder: John Brozdowski, private breeder, Pine Island, New York. Vendor: Asgrow Seed Co. Characteristics: heavy yielder of large, dark red bulbs. Similar: Southport Red Globe. Adaptation: medium and long day onion areas. Asgrow's "Your Crops-What's New for 65," Fall 1964.

Rumba (SXO 1462) - Breeder: R. Watson. Vendor: Sunseeds. Parentage: F1 hybrid. Resistance: Pink root. Similar: Alabaster. Adaptation: intermediate day. 1996.

Russet - Breeder and vendor: Stokes. 1988.

S-1 White Grano - Breeder and vendor: New Mexico A and M. College, State College. Parentage: synthetic cultivar from 10 inbred lines. Characteristics: earlier and more uniform maturity; broad ovate shape; no red, yellow, or off-colored bulbs. Similar: White Grano. Adaptation: southwestern United States. 1955.

Sabroso (SXO 1440) - Breeder: R. Watson. Vendor: Sunseeds. Parentage: F1 hybrid. Resistance: Pink root and Fusarium. Similar: Valiant. Adaptation: long day. 1996.

Salad Red - Breeder and vendor: Burpee Seed Co. Adaptation: U.S. 2003.

Samba (SXO 1433) - Breeder: R. Watson. Vendor: Sunseeds. Parentage: F1 hybrid. Similar: Tango. Adaptation: long day. 1996.

San Felipe - Breeder and vendor: Ferry-Morse Seed Company, Mountain View, California. Parentage: G36 x F-M inbred. Characteristics: F1 hybrid, slow bolting, large, top-shaped. Similar: Yellow Grano. Adaptation: fall and early winter planting in California. Ferry-Morse Seed Company 15 Apr. 1963.

San Joaquin - Breeder: USDA, Beltsville, Maryland, and the California Agric. Expt. Sta., Davis. Parentage: Stockton S36 and Early Grano. Characteristics: early maturing, nonbolting, high yielding. Similar: Stockton Yellow Globe. Adaptation: southwestern United States, especially the San Joaquin valley. Southern Seedsman, June 1946.

San Juan - Breeder and vendor: Dakota. Characteristics: short day, yellow, high yielding. Resistance: pink root. Similar: Gran Prix. 1992.

San Lucas - Breeder and vendor: Dakota. Characteristics: short day, white, high yielding. Resistance: pink root, bolting. Similar: Early White Supreme. 1992.

San Mateo - Breeder and vendor: Dakota. Characteristics: short day, red, high yielding. Resistance: pink root. Similar: Red Granex. 1992.

San Paulo - Breeder and vendor: Dakota. Characteristics: short day, yellow, high yielding. Resistance: pink root. Similar: Gold Rush. 1992.

San Tomas - Breeder and vendor: Dakota. Characteristics: short day, red, thick flat bulb. Resistance: pink root. Similar: Tropicana. 1992.

Sangria (SSC-8379) - Breeder and vendor: Shamrock. Characteristics: main season, intermediate day, red bulb, large globe-shaped, deep red color with good ring distinction. Resistance: pink root, bolting. Similar: Tango. 1991.

Santa Fe (XP 15225) - Breeder: Omar Diaz. Vendor: Seminis-Asgrow. Parentage: F1 hybrid. Characteristics: full season, dark skin, bolt tolerant, globe shaped, high percentage single centers. Resistance: fusarium basal rot, pink root. Similar: Vaquero. Adaptation: Pacific northwest, south-central California, Colorado. 2002.

Sassy Brassy (232003) - Breeder and vendor: Ferry-Morse Seed Co. Parentage: FM inbreds. Characteristics: late-season storage type, dark bronze; tight skins. Resistance: pink root. Resistance: tolerance to fusarium. Similar: Spartan Banner. Adaptation: Michigan, Wisconsin, and New York and Ontario, Canada. 1985.

Saticoy Hybrid (OB Number) - Breeder and vendor: Petoseed Company, Saticoy, California. Characteristics: F1 hybrid, 5 to 7 days earlier than Early Harvest. Adaptation: Texas, mountain areas of Colorado, and central California. The Peto Story, Petoseed Company, 1961.

Savannah Sweet (PS5783) - Breeder: A.Burkett. Vendor: Petoseed. Characteristics: hybrid, early short day, uniform, thick flat shape, small necks, golden yellow bulbs with excellent retention. 1989.

Seahawk (EX 15232) - Breeder and vendor: Seminis Vegetable Seeds-Asgrow. Parentage: F1 hybrid. Characteristics: Spanish, storage type; dark skinned; sizes well; will store up to 7 months; 110 day maturity. Resistance: intermediate to Fusarium basal rot and pink root. Similar: Valiant. Adaptation: NAFTA, Pacific northwest U.S. 2003.

Seco (XP 643) - Breeder and vendor: Asgrow Seed Co. Parentage: closed pedigree Asgrow and USDA inbreds. Characteristics: F1 hybrid, high solids Southport White Globe type hybrid primarily for dehydration. Resistance: tolerance to pink root. Adaptation: long-day areas. 1968.

Seneca - Breeder and vendor: Golden Valley. Characteristics: yellow storage hybrid. Resistance: some to pink root, fusarium. 1991.

Sentinal (5551) - Breeder and vendor: Joseph Harris Co. Characteristics: F1 hybrid, long storage, dark scales. Resistance: fusarium. Similar: Downing Yellow Globe. Adaptation: wide. 1974.

Serrana (XP8403) - Breeder: R.Jones. Vendor: Asgrow. Characteristics: tropical yellow bulb type, early maturity, good storage potential. Similar: Baia Periforme. 1993.

Sevillana (129013) - Breeder and vendor: Seminis Vegetable Seeds-Petoseed. Parentage: F1 hybrid. Characteristics: mid season long day type with high plant vigor; gives larger sizes under low plant density and mid sizes (very uniform) under high plant density; skin is good dark color; storability good. Similar: Daytona. Adaptation: South America. 2003.

Seville (AX-1849) - Breeder and vendor: Aristogenes. Characteristics: outstanding vigor, high yielding ability, highly single centered, excellent uniformity, good storage quality. Resistance: pink root. Similar: Sweet Amber. 1991.

Shamrock - Breeder and vendor: Northrup King and Comp., Minneapolis, MN. Parentage: Selection from Southport White Globe. Characteristics: selected for shipping. Northrup King Desc. List, GS 53-2. 1959.

Shasta (PSX73089) - Breeder: R.Engle. Vendor: Petoseed. Characteristics: single centers, vigorous tops. Similar: Oro Grande. 1993.

Showtime (PSX63788) - Breeder: R.Engle. Vendor: Petoseed. Characteristics: yellow Spanish hybrid, extra large jumbo bulbs, globe shaped, mild flavor, excellent storage, midseason maturity range. Similar: Summit. 1993.

Sierra (XP70) - Breeder and vendor: Asgrow Seed Co. Characteristics: F1 hybrid, medium season maturity, better ability for storage than most Sweet Spanish types. Similar: Yellow Sweet Spanish. Adaptation: wide. 1976.

Sierra Blanca (PS 25294) - Breeder and vendor: Seminis-Petoseed. Parentage: F1 hybrid. Resistance: Pink root. Similar: Aspen. Adaptation: Texas, Colorado, Mexico.

Silverstone (SXO 1457) - Breeder: Rick Watson. Vendor: Sunseeds. Parentage: F1 hybrid. Characteristics: long day, northern type, hybrid, white globe shape, bright white outer scales, firm and pungent flesh, excellent storage abilities. Resistance: pink root. Similar: Blanco Duro. Adaptation: Italy; long day onion market. 2000.

Simcoe (DEXP 764) - Breeder and vendor: Dessert Seed Co. Parentage: hybrid, B2264A x Dessert Pollinator. Characteristics: bronze, deep globe, long storage, high yield. Similar: Downing Yellow Globe. Adaptation: northern mucks. 1974.

Sin Simeon - Breeder and vendor: Dakota. Characteristics: white, short day, high yielding. Resistance: pink root, bolting. Similar: Early White Supreme. 1992.

Sioux - Breeder: Ferry-Morse Seed Company, Mountain View, California. Characteristics: F1 hybrid, a full Spanish hybrid that stores well; bulbs large, globular, with dark brown scales. Similar: Sweet Spanish. Adaptation: long photoperiod areas. Ferry-Morse Seed Company, 2 July 1963.

Sleeping Beauty (225W2) - Breeder: K.McLellan. Vendor: Ferry-Morse. Characteristics: main season, excellent yields, long storage. Similar: Sentinel. 1985.

Snow White - Breeder: USDA and Utah Agric. Expt. Sta., Logan. Parentage: CW15-8-4-1A x WSS 89-1-4 Cochise White inbred x White Sweet Spanish inbred. Characteristics: F1 hybrid, plant large, semi-glossy foliage; bulbs medium size, white globe shape, firm, pungent, medium maturity, long storage. Similar: White Sweet Spanish. Onion Hybrid Snow White USDA release 28 February. 1957.

Snowbaby - Breeder and vendor: Johnny's.

Solid Gold (AX-1468) - Breeder: E.Wheeler. Vendor: Aristogenes. Characteristics: consistent heavy yielder of attractive, high quality, very long storing bulbs. Resistance: pink root. Similar: Paragon. 1992.

Span-Gran - Breeder and vendor: Bill Wahlert Seeds, Oregon. Characteristics: hybrid, 2 to 4" in diameter, light straw-colored scales, predominately single centered, medium to long storage, Yellow Sweet Spanish type. Resistance: pink-root. Similar: Yellow Sweet Spanish. Adaptation: Idaho, eastern Oregon, northern California, and Iowa. 1972.

Spanish Main - Breeder: K.McLellan, P.Olesen and Associates, Parma, Idaho. Vendor: Ferry-Morse. Parentage: closed. Characteristics: long day Spanish hybrid. Resistance: tolerance to pink root. Similar: El Capitan. Adaptation: areas where Yellow Sweet Spanish is grown. 1969.

Spartan - Breeder: USDA, Iowa Agric. Expt. Sta., Ames, and Michigan Agric. Expt. Sta., East Lansing. Parentage: IA 467-8A x B2215C Melzers Yellow Globe x Brigham Yellow Globe. Characteristics: F1 hybrid, medium plant size, nonglossy foliage; bulb medium size, brown scales, high globe, pungent, long storage. Similar: Downing Yellow Globe. Adaptation: where Brigham Yellow Globe is grown. Onion Hybrid Spartan, USDA release, 14 Mar. 1957.

Spartan Banner - Breeder: Michigan State University, E. Lansing. Parentage: MSU 2399A x MSU 611C. Characteristics: F1 hybrid, long-day, storage, late, high yield. Similar: Spartan Gem. Adaptation: northern muck areas of the United States. Mimeo Announcement, Dec. 15, 1965.

Spartan Banner 80 - Breeder: USDA, Michigan State Expt. Stn. Parentage: (MSU 611-1A x MSU 611B) x MSU 2399B. 1979.

Spartan Bounty - Breeder: Michigan State University, East Lansing. Parentage: MSU 1411A x MSU 611C. Characteristics: F1 hybrid, long-day, storage type. Firm, long keeping, high yield, uniform maturity. Similar: Downing Yellow Globe. Adaptation: northern long-day onion areas. Release announcement, Michigan State University, Nov. 14, 1966.

Spartan Era - Breeder: Michigan State University, East Lansing. Parentage: IA 736A x MSU 611C. Characteristics: F1 hybrid, late and long storing; bulb very hard, pungent, uniform, high globe. Similar: Brigham Yellow Globe. Adaptation: northern muck land. C.E. Peterson 27 May 1963.

Spartan Gem - Breeder: Michigan Sate University, East Lansing. Parentage: MSU728A x MSU611C. Characteristics: F1 hybrid, late and long storing; bulb very hard, pungent, uniform high globe. Resistance: some tolerance to pink root. Similar: Brigham Yellow Globe. Adaptation: northern muck land. C.E. Peterson 27 May 1953.

Spartan Sleeper - Breeder: USDA, Michigan State Expt. Stn. Parentage: (MSU 2935A x MSU 1459B) x MSU 4535B. 1974.

Special 38 - Breeder and vendor: ARCO Seed Company. Characteristics: F1 hybrid. Resistance: pink root. Similar: Henrys Special. Adaptation: short-day onion regions. 1983.

Spectrum (SXO 1461) - Breeder: R. Watson. Vendor: Sunseeds. Parentage: F1 hybrid. Similar: Marvel. Adaptation: long day. 1997.

Spinnaker (XP 15043) - Breeder and vendor: Seminis-Asgrow. Parentage: F1 hybrid. Resistance: Pink root and Fusarium. Similar: Valiant. Adaptation: northwest U.S. and Italy.

Spirit - Breeder and vendor: Bejo. Characteristics: hybrid, dark brown bulb, long storability. 1989.

Squire (HMX0627) - Breeder: M.Mason. Vendor: Harris Moran. Characteristics: large colossal bulbs, globe shaped. Resistance: tolerance to pink root.

Stallion (HMX2327) - Breeder and vendor: Harris Moran. Characteristics: short day onion, yellow in color, medium in maturity, globe shaped bulbs, large bulb size, excellent uniformity. 1992.

Stealth (MR7500) - Breeder and vendor: Rispens. Characteristics: 108 day onion, long day, good storage. Resistance: pink root, fusarium. Similar: Legacy. 1992.

Sterling (PSX92088) - Breeder: R.Engle. Vendor: Petoseed. Characteristics: long day type, white sweet Spanish type, globe shaped jumbo. 1991.

Stetson (HMX2324) - Breeder and vendor: Harris Moran. Characteristics: short day onion, white in color, early-medium maturity, slightly flattened bulb shape, jumbo bulb size. Resistance: pink root, good tolerance to bolting. 1992.

Stockade (XP 77012) - Breeder and vendor: Seminis-Asgrow. Parentage: F1 hybrid. Characteristics: mid-late storage onion, 115 days maturity. Similar: Duration. Adaptation: New York, Michigan, Wisconsin. 2000.

Stockton G-36 - Breeder: California State Expt. Stn. Similar: Stockton Yellow Globe.

Stratus (XP 6800) - Breeder: Omar Diaz. Vendor: Seminis-Asgrow. Parentage: F1 hybrid. Characteristics: main season, white single centered, globe shaped, bolt resistant. Similar: Diamente. Adaptation: Mexico, Texas, Central America. 2001.

Sugar Belle (SSC 6371) - Breeder and vendor: Shamrock Seed Co. Parentage: F1 hybrid. Resistance: Bolting. Similar: Granex 33. Adaptation: all short onion growing regions. 1999.

Summit (PSX64289) - Breeder: R.Engle. Vendor: Petoseed. Characteristics: long day type, midseason globe shaped jumbo. 1991.

Sun Sweet (Sunex1504) - Breeder: I.Miller. Vendor: Sunseeds. Characteristics: short day, attractive yellow scales, mild in flavor highly single centered. Resistance: high tolerance to pink root. 1995.

Sunburst (W4A x W101B) - Breeder: University of Wisconsin, Madison. Parentage: W4A x W101B. Characteristics: F1 hybrid, heavily scaled; good yielder; minimum shrinkage in storage. Resistance: tipburn. Adaptation: midwestern. Memo to Onion Seed Producers, 1 May 1964.

Sunglow (Crk N81) - Breeder and vendor: Crookham Co. Characteristics: F1 hybrid, uniform midseason globe with excellent storage quality and above-average yield. Similar: Downing and Brigham Yellow Globe. Adaptation: areas where Downing and Brigham Yellow Globe are grown. 1978.

Suntan - Breeder and vendor: Bejo. 1989.

Sunup (Sunex1502) - Breeder: I.Miller. Vendor: Sunseeds. Characteristics: yellow scales. Resistance: tolerance to pink root. 1995.

Super Apollo (ACX 801615) - Breeder and vendor: Abbott & Cobb. Characteristics: early maturing, uniform size and shape, good storage quality. Similar: Early Yellow Globe, Apollo. 1982.

Super Chief (XP 77031) - Breeder: Omar Diaz. Vendor: Seminis-Asgrow. Parentage: F1 hybrid. Characteristics: full season true Spanish onion, 120 days, stores well, single centers, globe shaped, excellent dark skin. Similar: Vision. Adaptation: Pacific northwest, California, Colorado. 2001.

Super Set - Breeder and vendor: Abbott & Cobb. Characteristics: sets hold longer in storage than cultivars presently used. Similar: Ebenezer. 1982.

Super Spice 2 - Breeder and vendor: Stokes. 1988.

Super Staf (25294) - Breeder and vendor: Seminis-Petoseed. Parentage: F1 hybrid. Resistance: Pink root. Similar: Aspen, Alabaster.

Super Sweet - Breeder and vendor: Dakota. Characteristics: thick, flat yellow, very mild. Resistance: pink root. Similar: Sweet Vidalia. 1993.

Super Sweet Red - Breeder and vendor: Dakota. Characteristics: hybrid, red, short day. Resistance: pink root. 1994.

Superbronze - Breeder and vendor: L.P. Gunson Company, Rochester, New York. Parentage: Downings x Southern Red Globe. Characteristics: long keeping, multi-skinned, high yielding. Adaptation: northern tier of the United states and Canada. 1953.

Superior - Breeder and vendor: Abbott & Cobb. Characteristics: medium large, deep globe, long keeping, uniform size and shape. Similar: Downing Yellow Globe. 1982.

Surecrop (D5537) - Breeder and vendor: Joseph Harris Co. Characteristics: F1 hybrid, high yield. Similar: Spartan Banner. Adaptation: northeastern and midwestern United States. 1980.

Surprise - Breeder: USDA, Idaho Agric. Expt. Sta., Moscow and Iowa Agric. Expt. Sta., Ames. Parentage: B2207A x B2215C Brigham Yellow Globe inbreds. Characteristics: F1 hybrid, large plant size, nonglossy foliage, late maturity, good storage; bulbs medium sized, good yellow color, high globe, pungent firm. Similar: Brigham Yellow Globe. Adaptation: where Brigham Yellow Globe is grown. Release of Onion Hybrid Surprise USDA release. 1 Dec. 1953.

Sweet Amber (XPH 77N76) - Breeder and vendor: Crookham Co. Characteristics: F1 hybrid, early mild Spanish hybrid with good single centers and thick, succulent rings; heavy amber scales that adhere well. Resistance: high tolerance to pink root. Similar: Yellow Sweet Spanish. Adaptation: areas where Yellow Sweet Spanish is grown. 1986.

Sweet and Early - Breeder and vendor: Burpee. Characteristics: mid day hybrid.

Sweet Dixie (RCSX 7702) - Breeder: R.Kreizenbeck. Vendor: Rio Colorado. Characteristics: deep Granex type. 1989.

Sweet Georgia (KFX1100) - Breeder and vendor: K-F Seeds. Characteristics: F1 hybrid, early mild Granex type, bolt-resistant. Resistance: pink root. Similar: F1 hybrid Granex. Adaptation: short-day growing areas, especially Georgia. 1984.

Sweet Melissa (SX 15190N) - Breeder: Felix Serquen. Vendor: Sunseeds. Parentage: F1 hybrid. Characteristics: high yielding yellow Granex hybrid, high percentage jumbo sizes, mild flavor. Resistance: pink root. Similar: Yellow Granex. Adaptation: Granex market areas. 2000.

Sweet Perfection (XPH85N39) - Breeder: N.Molenaar. Vendor: Crookham. Characteristics: consistent high yielding, predominantly single centered, a few days earlier than Sweet Amber, longer storage than Sweet Amber. Resistance: pink root. Similar: Sweet Amber. 1989.

Sweet Ring (ARCO 92-3147Y) - Breeder and vendor: ARCO Seed Co. Characteristics: F1 hybrid, maturity 7 to 10 days earlier than Early Premium, highly single-centered, medium to jumbo globe-shaped bulbs. Resistance: pink root. Similar: Colossal. Adaptation: short-day growing areas. 1985.

Sweet Sandwich - Breeder and vendor: USDA, Michigan State University, Cornell University and University of Wisconsin. Vendor: Various. Parentage: F1 hybrid, (MSU5718A x MSU8155B) x MSU826B. Characteristics: good storage quality, low pungency (mild) from storage, long-day type. Similar: Spartan Banner. Adaptation: organic soils of New York and the midwestern United States. 1983.

Sweet Spanish Colorado Number 6 - Breeder: Colorado Agric. Expt. Sta., Fort Collins. Vendor: various Colorado Seed Companies. Parentage: selection out of Burrells Riverside Strain of Sweet Spanish. Characteristics: late maturity, dark brown scale color, better storage qualities than most Sweet Spanish, vigorous top growth. High tolerance to Pink Root. Adaptation: Arkansas Valley of long growing seasons. (Idaho number 6 is an early selection out of Colo. no.6). College Agric. Expt. Sta. Rpts. 1937.

Sweet Success (Sunex1514) - Breeder: I.Miller. Vendor: Sunseeds. Characteristics: early maturity, low bolting, large high-quality bulbs. Resistance: pink root. Similar: Yellow Granex. 1994.

Sweet Sunrise - Breeder and vendor: Champion. Characteristics: sweet, short day, yellow hybrid, high percentage single centers, excellent yields. Resistance: fine tolerance to pink root, good tolerance to bolting. 1995.

Sweet Vidalia (KFX-1133) - Breeder and vendor: K-F Seeds. Characteristics: F1 hybrid, bolt-resistant, high percent single centers; unusual mildness when grown in Vidalia, GA, area. Resistance: pink root. Similar: F1 Granex. Adaptation: short-day growing areas, especially Georgia. 1985.

Sweet Winter (OWY-1909) - Breeder and vendor: Dessert Seed Co. Characteristics: open pollinated, larger overwinter onion, flattened globe, mild flavor, matures mid-June. Resistance: freezing. Similar: Walla Walla Sweet. Adaptation: wide. 1980.

Sweetex (ARCO 532Y) - Breeder and vendor: ARCO Seed Co. Characteristics: F1 hybrid, large, early Granex-type bulbs. Resistance: pink root. Adaptation: short-day onion areas. 1987.

Sweetex (FMX 225) - Breeder: N.Dragoescu. Vendor: Ferry-Morse. Characteristics: outstanding hybrid for high percentage of jumbo sizes, Grano shape, 10-14 days earlier and stores better than 1015Y. Resistance: pink root. Similar: 1015Y. 1988.

Sweetheart (219W2) - Breeder and vendor: Ferry-Morse Seed Co. Parentage: F1 hybrid, FM inbreds. Characteristics: Spanish type that can be spaced for jumbo sizes and will store slightly longer than most Spanish hybrids; highly single-centered. Similar: Cima. Adaptation: Michigan and New York. 1985.

Tamarack 2 - Breeder and vendor: Stokes. 1988.

Tampico - Breeder and vendor: ARCO/Dessert. Resistance: pink root. 1982.

Tango (Expt 110-4) - Breeder and vendor: ARCO Seed Co. Characteristics: F1 hybrid, dark red color extends to center of bulb when well-cured; bulbs uniform and globe-shaped with small necks and excellent storage qualities. Similar: Carmen. Adaptation: northern onion-growing areas. 1985.

Tarmagon - Breeder and vendor: Stokes. Characteristics: long day by short day hybrid for long day production. 1988.

Taurus (XP45) - Breeder and vendor: Asgrow Seed Co. Characteristics: F1 hybrid, large bulb for long storage. Resistance: fusarium rot. Similar: Spartan Banner, Spartan Gem, and Sunburst. Adaptation: long-season areas of midwestern and northeastern United States and Europe. 1975.

Terlingua (XP 6786) - Breeder and vendor: Seminis-Asgrow. Parentage: F1 hybrid. Resistance: Pink root. Similar: Linda Vista. Adaptation: Texas, Mexico, California.

Tesoro (Sunex1473) - Breeder: R.Watson. Vendor: Sunseeds. Characteristics: yellow sweet Spanish, large bulb size, good storage quality. Resistance: pink root, fusarium. Similar: Valiant. 1994.

Teton (PSX60487) - Breeder: R.Engle. Vendor: Petoseed. Characteristics: long storage, dark scales, hard bulbs, export type. Similar: Bull Ring. 1994.

Texas Early Grano - Breeder and vendor: Texas Agric. Expt. Sta., College Station. Parentage: selection from Early Grano. Characteristics: top shaped globe; early, uniform under south Texas conditions. Adaptation: south Texas. Texas Agric. Expt. Sta. Prog. Rpt. (Mimeo). June 1944.

Texas Grano 438 - Breeder: L.Pike, Texas A and M University. Characteristics: short day, one week later than TG 1105Y, slightly flattened globe, fairly large neck, excellent root system, excellent shipping quality. Resistance: pink root. Similar: New Mexico Yellow Grano. PVP. 1989.

Texas Grano 1015Y - Breeder: L.Pike, Texas A and M University. Characteristics: TEG 951C. 1987.

Texas Grano 1025Y - Breeder: L.Pike, Texas A and M University. Parentage: Texas Early Grano 502 x Ben Shemen. 1987.

Texas Grano 1105Y - Breeder: L.Pike, Texas A and M University. Parentage: Texas Early Grano 502 x Ben Shemen. 1987.

Texas Hybrid 23 - Breeder: Texas Agric. Expt. Sta., College Station, and USDA. Parentage: YB 986A x L365 Yellow Bermuda x Crystal Wax. Characteristics: F1 hybrid. Resistance: pink root in Texas. Similar: Yellow Bermuda. Texas Agric. Expt. Sta. Bul. 854-Onion Varieties in Texas. March 1957.

Texas Hybrid 28 - Breeder: Texas Agric. Expt. Sta., College Station, and USDA. Parentage: YB986A x L 303. Characteristics: F1 hybrid. Resistance: pink root in Texas. Similar: Yellow Bermuda. Texas Agric. Expt. Sta. Bul. 854. Onion Cultivars in Texas, March 1957.

Texspan PRR - Breeder and vendor: ARCO Seed Co. Characteristics: open pollinated. Resistance: pink root. Similar: Ben Sheman. Adaptation: intermediate onion areas. PVP certificate number 800159. 1981.

Texstar 80 Yellow PRR - Breeder and vendor: ARCO Seed Co. Characteristics: F1 hybrid. Resistance: pink root. Similar: Yellow Granex. Adaptation: short-day onion regions. 1980.

Tioga (PS 663395) - Breeder: Omar Diaz. Vendor: Seminis-Petoseed. Parentage: F1 hybrid. Characteristics: early yellow Spanish, 115-120 days to maturity, globe shaped long storage. Resistance: fusarium basal rot, pink root. Similar: Teton. Adaptation: Pacific northwest, Colorado, Utah, Northern California. 2000.

Tip Top (E1216 (4C-X154)) - Breeder: Sakamoto. Vendor: Ferry-Morse. Characteristics: uniform, vigorous Grano hybrid, good size, scales slightly darker than Texas Early Grano but retained much longer. Resistance: pink root. Similar: Texas Early Grano 502 PRR. 1982.

Titania (XPH3371) - Breeder: S.Hendricks. Vendor: Asgrow. Characteristics: long day type, Granex shape, bulbs generally large with good scale color and retention, storability is very good. Resistance: pink root, fusarium. Similar: Dorata di Parma (Italy). 1990.

Toltec - Breeder and vendor: Dakota. Characteristics: late maturing, high yielding, yellow sweet Spanish. Resistance: pink root. Similar: Vega. 1990.

Top Keeper - Breeder and vendor: Takii. Characteristics: overwintering yellow type. Resistance: tolerance to botrytis, downy mildew, bolting. 1988.

Topaz (XP 194) - Breeder and vendor: Asgrow Seed Co. Parentage: closed combination of USDA male-sterile and pollinator lines. Characteristics: F1 hybrid, main season with good scales, keeping qualities and market appearance. Similar: Elite. Adaptation: long-day, northern onion areas. Asgrow's "Your Crops-What's New for 67," Fall 1966.

Topnotch (90H4) - Breeder: N.Molenaar. Vendor: Crookham. Characteristics: very hard globe to tall globe, long term storage onion, 110 day maturity from seeding. Resistance: pink root, fusarium. Similar: Spartan Banner 80. 1994.

Topper (Briggs #1) - Breeder and vendor: Shamrock. Characteristics: early maturing, open pollinated, short day onion, very good size bolt. Adaptation: Rio Grande, New Mexico, California. Resistance: pink root. Similar: BR#1. PVP. 1989.

Torero (SXO 1436) - Breeder: R. Watson. Vendor: Sunseeds. Parentage: F1 hybrid. Resistance: Pink root and Fusarium. Similar: Vaquero. Adaptation: Sweet Spanish growing regions. 1998.

Torque (9OH29) - Breeder: N.Molenaar. Vendor: Crookham. Characteristics: hard storage onion for eastern U.S. mud soils, 102 day maturity from seeding, very hard round globe. Resistance: pink root, fusarium. Similar: Autumn Keeper. 1994.

Tough Ball - Breeder and vendor: Takii. Characteristics: overwintering yellow storage type. Resistance: tolerance to botrytis, downy mildew, bolting. 1988.

Tradewind (XPH 15042) - Breeder and vendor: Seminis-Asgrow. Parentage: F1 hybrid. Resistance: Pink root and Fusarium. Similar: Teton. Adaptation: northwest U.S., Utah, Colorado.

Treasure - Breeder: USDA, Cornell University, Ithaca, and Idaho Agric. Expt. Sta., Moscow. Parentage: B2267A x B12115C Brigham Yellow Globe x Yellow Sweet Spanish. Characteristics: plant size large, nonglossy foliage; bulbs medium size, yellow sloping shoulders, deep globe, firm; late maturity, long storage. Similar: Yellow Sweet Spanish. Adaptation: northern United States. Notice of Release of F1 hybrid Treasure, USDA release 1 Sept. 1960.

Tribute (XPH3958) - Breeder: S.Hendricks. Vendor: Asgrow. Characteristics: storage type of onion with round globe shape, good skin quality, trim neck. Resistance: pink root. Similar: Brown Beauty. 1993.

Trooper (MR7550) - Breeder and vendor: Rispens. Characteristics: 110 day maturity, high yield. Resistance: pink root, fusarium. Similar: Duration. 1992.

Tropex (XP 181) - Breeder and vendor: Asgrow Seed Co. Parentage: Excel and Texas Grano 502. Characteristics: open pollinated. Similar: Grano 502. Adaptation: short-day areas. 1974.

Tropicana Red PRR - Breeder and vendor: ARCO Seed Company. Characteristics: F1 hybrid. Resistance: pink root. Adaptation: short-day onion areas. 1964.

Tule - Breeder and vendor: Ferry-Morse Seed Company, Mountain View, California. Parentage: G36 x Sweet Spanish type. Characteristics: F1 hybrid, bulb yellow, large, shallow globe, flesh white; slower bolting than Sweet Spanish. Similar: Sweet Spanish Utah. Adaptation: late fall and early winter planting in California. Ferry-Morse Seed Company, 15 Apr. 1963.

Twister (PS 492) - Breeder and vendor: Seminis-Petoseed. Parentage: F1 hybrid. Similar: Granex. Adaptation: Arizona, California.

Ultra (FMX253) - Breeder: N.Dragoescu. Vendor: Ferry-Morse. Characteristics: short day yellow-copper scale color, 10-12 days earlier than Sweetex. Resistance: pink root. Similar: Sweetex. 1991.

Uniglobe 100 - Breeder: R. Maxwell. Vendor: Seminis-Petoseed. Parentage: F1 hybrid. Adaptation: Long-day. 1997.

Uniglobe 108 - Breeder: R. Maxwell. Vendor: Seminis-Petoseed. Parentage: F1 hybrid. Adaptation: Long-day. 1996.

Uniglobe 118 - Breeder: R. Maxwell. Vendor: Seminis-Petoseed. Parentage: F1 hybrid. Adaptation: northwest U.S. 1996.

Uno Grande PRR (Ringer PRR) - Breeder and vendor: Moran. Characteristics: deeper bulb shape than Ringer, a Texas early Grano 520 type, thinner neck diameter, 5 days earlier maturity than TEG502, short day. Resistance: pink root. Similar: Ringer. 1983.

Utopia (XPH6025) - Breeder: R.Jones. Vendor: Asgrow. Characteristics: intermediate, yellow skin, early globe shaped bulb, for immediate shipment, limited storage, early summer harvest. Similar: Cimarron. 1992.

Valdez (DEXP 659-3) - Breeder and vendor: Dessert Seed Co. Characteristics: F1 hybrid, yellow sweet Spanish, high yields, long storage life. Resistance: Pink root. Similar: Victory. Adaptation: Sweet Spanish onion growing areas. 1978.

Valiant (DEXP 592P) - Breeder and vendor: ARCO/Dessert. Characteristics: midseason Spanish type, very firm with good mechanical handling quality, long storage potential. Similar: Fiesta. 1984.

Vantage (PS 67691) - Breeder and vendor: Seminis-Petoseed. Parentage: F1 hybrid. Resistance: Pink root. Similar: Candy, Teton. Adaptation: northwest U.S., California, Colorado, Utah.

Vaquero (Sunex 1487) - Breeder: R.Watson. Vendor: Sunseeds. Characteristics: main season yellow Spanish type capable of high yields of large bulbs with a high frequency of single centers. Resistance: pink root, fusarium basal rot. Similar: Bravado. 1992.

Vega (XPH 419) - Breeder and vendor: Asgrow Seed Company. Characteristics: F1 hybrid with large bulbs and good storability for this class. Resistance: possible field tolerance to pink root. Similar: Spanish types. 1981.

Viceroy (XPH3466) - Breeder: S.Hendricks. Vendor: Asgrow. Characteristics: main season Spanish type for limited storage, very uniform size and shape, medium scale color. Resistance: pink root. Similar: Maya. 1993.

Viper (XPH3803) - Breeder: S.Hendricks. Vendor: Asgrow. Characteristics: true Spanish long day hybrid type, improved bolting tolerance relative to Vega, bulbs with good color and scale retention, storage is limited. Resistance: pink root, fusarium. Similar: Vega. 1994.

Vision (PS754) - Breeder: R.Engle. Vendor: Petoseed. Characteristics: hybrid yellow Spanish type, late maturity, excellent storage, jumbo and colossals, single centers. Resistance: pink root. 1995.

Vista (PSX62588) - Breeder: R.Engle. Vendor: Petoseed. Characteristics: long day onion, globe shaped jumbo size, excellent storage. 1991.

Voyager (HMX2613) - Breeder and vendor: Harris Moran. Characteristics: large blocky bulbs with long term storage. Resistance: tolerance to pink root. Similar: Spartan Banner. 1991.

Waikato (XP 6808) - Breeder: David Dean. Vendor: Seminis-Asgrow. Parentage: open pollinated. Characteristics: yellow hard storage, golden brown scales, globe shaped, can be stored 4-6 months. Resistance: fusarium basal rot. Similar: Creamgold. Adaptation: New Zealand, Australia, South Africa, Colorado. 2000.

Warhawk - Breeder and vendor: Dakota. Characteristics: yellow intermediate type. Resistance: tolerance to pink root. Similar: Buffalo. 1993.

White Alamo Hybrid - Breeder and vendor: Dessert Seed Company, El Centro, California. Characteristics: F1 hybrid, matures about 7 to 10 days earlier than White Granex; good prepackage onion; bulb high, flat, mild; stores well. Resistance: Southern Texas strain of pink root. Similar: White Granex. Adaptation: same region as White Granex. Dessert Catalog, 1962.

White Creoso PRR - Breeder and vendor: ARCO Seed Co. Characteristics: open pollinated. Resistance: pink root. Adaptation: intermediate onion areas. 1968.

White Delite (Crk XPN 135) - Breeder and vendor: Crookham Co. Parentage: F1 hybrid, (CW 15-8 x WSS34-89) x Crk 139C. Characteristics: a While Spanish type that stores longer, uniform, medium high globe shape with snow white interior and exterior bulb color. Resistance: tolerance to some strains of pink root. Similar: White Sweet Spanish. 1980.

White Express - Breeder and vendor: ARCO Seed Company. Characteristics: F1 hybrid. Resistance: pink root. Adaptation: short-day onion areas. 1982.

White Granex - Breeder: USDA and Texas Agric. Expt. Sta., College Station. Parentage: L 303A x B 1410C. Eclipse x TEG. Characteristics: F1 hybrid, medium plant size, semi-glossy foliage; bulbs large, white, high flat, taper to base, mild, soft. Similar: Granex. Adaptation: southern United States. White Granex, A New F1 Onion Hybrid for the South, USDA release, 29 June 1956.

White Granite - Breeder and vendor: Asgrow Seed Company, New Haven, Connecticut. Characteristics: F1 hybrid, higher solids than most cultivars; tall globe shape reduces trimming losses for dehydration. Similar: Asgrow W45. Adaptation: same as Southport White Globe. Asgrow Commercial Growers Guide. 1963.

White Ivory - Breeder and vendor: Harris Moran. Characteristics: globe shape, medium-large size, excellent storage. 1992.

White Keeper (Crk XPH 136) - Breeder and vendor: Crookham Co. Parentage: F1 hybrid, (CW 15-8 x Crk GF3) x Crk 139C. Characteristics: modified White Spanish type that stores as well as Southport White Globe, bulbs firm; early maturity. Resistance: tolerance to various strains of pink root. Similar: White Sweet Spanish. Adaptation: areas where WSS are grown. 1980.

White Knight (XP 646) - Breeder and vendor: Asgrow Seed Co. Characteristics: long-shanked onion with slender, very deep bulb for bunching. Adaptation: wide. 1968.

White Lightning - Breeder and vendor: Dakota. Characteristics: overwintering white type. Resistance: tolerance to pink root, bolting. 1993.

White Majesty PRR - Breeder and vendor: ARCO Seed Co. Characteristics: F1 hybrid. Resistance: pink root. Adaptation: short-day onion areas. 1964.

White Persian - Breeder and vendor: USDA. Characteristics: selected from PI 86279 from Persia.

White Spear Bunching (4C-112) - Breeder and vendor: Ferry-Morse Seed Co. Characteristics: open pollinated, early, distinctly upright habit with blue-green tubular foliage, very long shanks, non-bulbing. Resistance: Pink root. Similar: Evergreen Bunching-Nebuka. 1979.

White Sweet Spanish 959 - Breeder and vendor: Asgrow Seed Company, New Haven, Connecticut. Characteristics: 10 days earlier than regular White Sweet Spanish; small trim neck of Idaho strain and size of the Utah strain. Similar: White Sweet Spanish. Adaptation: same as White Spanish types. Asgrow, Your Crops, Fall 1961.

White Tampico PRR - Breeder and vendor: ARCO Seed Company. Characteristics: F1 hybrid. Resistance: pink root. Adaptation: short-day onion areas. 1982.

Windfall (XPH3802) - Breeder: S.Hendricks. Vendor: Asgrow. Characteristics: full storage type onion with tall globe shape, good skin characteristics, excellent storability. Resistance: pink root, fusarium. Similar: Crusader. 1994.

Winter Over - Breeder: Herman Schlomann, Oradell, N.J. Vendor: Joseph Harris Company, Rochester, New York. Parentage: local strain bunching onion selected for winter hardiness and nonbolting. Characteristics: high quality bunching onion, slow to produce seeders, good winter hardiness. Resistance: winter kill. 1957.

Wolf (T-383) - Breeder and vendor: Takii. Parentage: F1 hybrid. Similar: Eskimo.

Wolverine - Breeder and vendor: Stokes. Characteristics: storage onion. Resistance: field tolerance to pink root. 1991.

Wrangler - Breeder and vendor: Rispens. Characteristics: 115 day maturity, Spanish by eastern type, very uniform, large size, good storage. Resistance: tolerance to pink root, fusarium. Similar: Valiant.

Yula (XPH 673) - Breeder and vendor: Asgrow Seed Co. Parentage: F1 hybrid, Idaho Agric. Expt. Sta. and Asgrow inbreds. Characteristics: very early onion for prompt marketing or limited storage; yields a good percentage of jumbos. Similar: Pronto S and Spanish types.

Z218PRR - Breeder: L.Kyle. Vendor: Neuman. Characteristics: yellow bulbs, short day hybrid. Resistance: pink root, bolting. 1989.

Z222PRR - Breeder: L.Kyle. Vendor: Neuman. Characteristics: yellow bulbs, short day, Grano type hybrid. 1989.

Z235PRR - Breeder: L.Kyle. Vendor: Neuman. Characteristics: yellow bulbs, early maturity, short day hybrid, Granex type. Resistance: pink root, bolting. 1989.

Z237 - Breeder: L.Kyle. Vendor: Neuman. Characteristics: yellow bulbs, early maturity, short day hybrid. Resistance: bolting. Similar: Z218. 1988.

Z238 - Breeder: L.Kyle. Vendor: Neuman. Characteristics: yellow bulbs, early maturity, short day hybrid. Resistance: bolting. 1988.

Z303 - Breeder: L.Kyle. Vendor: Neuman. Characteristics: early maturity, red flattened globe type. Resistance: pink root. 1988.

Z506 - Breeder: L.Kyle. Vendor: Neuman. Characteristics: white bulbs, early maturity, short day hybrid. Resistance: bolting. 1988.

Z507 - Breeder: L.Kyle. Vendor: Neuman. Characteristics: white bulbs, early maturity, short day hybrid. Resistance: pink root, bolting. 1988.

Z508 - Breeder: L.Kyle. Vendor: Neuman. Characteristics: white bulbs, early maturity, short day hybrid. Resistance: pink root. 1988.

Z508PRR - Breeder: L.Kyle. Vendor: Neuman. Characteristics: white flattened bulbs, short day hybrid. Resistance: pink root, bolting. 1989.

Z512 - Breeder: L.Kyle. Vendor: Neuman. Characteristics: white bulbs, early maturity, short day hybrid. 1988.

Z513 - Breeder: L.Kyle. Vendor: Neuman. Characteristics: selection from Early White Grano. 1988.

Zapotez - Breeder and vendor: Dakota. Characteristics: midseason, high yielding, white sweet Spanish type. Resistance: tolerance to pink root. Similar: Blanco Duro. 1992.

Zenith (PSX63788) - Breeder: R.Engle. Vendor: Petoseed. Characteristics: long day type, late maturity, globe shaped jumbo, white flesh, light brown scales. 1990.

Zorro (XPH 97329) - Breeder and vendor: Crookham. Parentage: P-USS x Crookham inbred. Resistance: Pink root. Similar: Celebrity. Adaptation: northwest U.S.

Zuni - Breeder and vendor: Dakota. Characteristics: midseason high yielding, white sweet Spanish type. Resistance: tolerance to pink root. Similar: Sterling. 1991.