Vegetable Improvement Newsletter
No. 15, February 1973
Compiled by H.M. Munger, Cornell University,
Ithaca, New York
1. Effect of Seed Density on Emergence, Vigor and Production
of Cucumbers
Ronald G. Eaton and J.L. Bowers
Department of Horticulture and Forestry, University of
Arkansas, Fayetteville, Arkansas 72701
Two lots of seed of the cultivar Explorer, one graded
as dense and the other as light and two similar lots of
seed of the cultivar Bravo, were used in these studies in
the spring and summer of 1972. In the field test which was
seeded on June 29, the difference in rate of emergence between
light seed and dense seed treatments were small and insignificant.
In the greenhouse study where moisture and depth of planting
were more accurately controlled, seedlings emerged faster
from the dense seed lots in both cultivars than from the
light grade of seed. In another test in which relatively
low soil temperatures were studied (56 degrees and 63 degrees
F), the rate of emergence was much faster in the dense seed
lots as compared with seedling emergence from light seed.
In these studies vigor of plants as measured by length
of central leader and branches was not different for two
grades of seed treatment.
Yield of the cultivar Explorer was greater from the dense
seed lots as compared with the light graded seed, where
as the dense and light seed lots of the Bravo Cultivar were
very similar in protection.
2. Selecting Cucumbers on the Basis of Green Fruit Quality
J.L. Bowers and M.J. Goode
During the period of 1969-72, the cucumber project leaders
and working crew on the Southwest Branch Experiment Station,
Hope, Arkansas have cut approximately 50,000 green fruit
longitudinally each year. This has enabled the breeders
to make selections on the basis of these internal green
fruit characters: (1) freedom of carpel separation, (2)
placental holliness, (3) small seed cavity, and (4) rate
of seed development. It is important to keep a good sharpening
stone in the field and maintain good sharp blades.
On the basis of our brining test, we have observed that
considerable progress has been made in the obtainment of
breeding lines which possess good internal fruit quality
and it is believed that the laborious process of green fruit
sectioning is responsible for the selection of these desirable
pickle types.
3. Use of Hermaphroditic Cucumber Inbreds in Development
of 3-Way Hybrids
L.M. Pike
Horticulture Section, Soil and Crop Science Department,
Texas A&M University, College Station, Texas 77843
A new system for producing hybrid cucumbers has been proven
superior to the present method, involving gynoecious by
monoecious crosses. The system utilizes inbreds of three
sex types; gynoecious, hermaphrodite, and monoecious.
The 3-way hybrid is derived by crossing gynoecious and
hermaphroditic inbreds to obtain a 100% gynoecious F1, which
is used as the female parent. The gynoecious F1 is then
crossed with a monoecious inbred to obtain the 3-way hybrid.
Factors which make the 3-way cross superior to F1 hybrids
using gynoecious times monoecious inbreds are summarized:
F1 female parent lines, derived by crossing gynoecious
with hermaphrodite, are much more stable for the gynoecious
character than inbred gynoecious lines. The stable F1 female
parent eliminates the need for continual rogueing of the
female parent in hybrid seed production.
Since F1 is used as the female parent in the production
of 3-way hybrids, a much smaller quantity of the gynoecious
inbred is needed. Therefore, a good stock of the gynoecious
inbred can be easily maintained by careful rogueing. This
maintenance is not easily done, when gynoecious inbreds
are used as the female parent.
A reduced quantity of gibberellic acid is needed in the
3-way hybrid seed production system. This reduced expense,
along with the eliminated need for rogueing, will result
in a significant saving in seed production cost.
Several experimental 3-way hybrids have been tested and
demonstrated to be equal or superior to present commercial
F1 hybrids for quality (size, shape, color, brining, and
processing characteristics) yield, and disease resistance.
4. Screening Muskmelons for Resistance to Fusarium Wilt
and Powdery Mildew
David W. Davis, Carl J. Eide, and M. Shehata
Departments of Horticultural Science and Plant Pathology,
University of Minnesota, St. Paul, Minnesota 55101
We have been using a seedling screening method for detecting
resistance to powdery mildew and Fusarium wilt in the muskmelon
breeding program; it may be of interest to other breeders.
The objective has been to reduce the proportion of susceptible
genotypes in segregating populations which are seeded in
the greenhouse for transplanting to the field. Success has
depended primarily on the timing of inoculation and on air
and soil moisture and temperature. We like to transplant
at a young age (about 3 1/2 weeks) and this leaves relatively
little time for infection development and plant elimination
prior to that time.
Vita Bands ("H") (2 1/2 " x 2 1/2")
are filled to with 1/4" with a nonsterile silt loam-sand-manure
(2:1:1) mix into which has been mixed a dry soil-base chlamydospore
inoculum of several isolates of Fusarium oxysporum
f. sp. melonis, at the rate of 4% by volume. The
"manure" is a near-humus form of straw-base barnyard
manure. Captan treated seed is planted in a 1/4" x
1/4" x 1/4" dibbled depression and sand is used
to cover to the top of each band. The bands are held in
wooden or other suitable flats on greenhouse benches heated
from below. Flats are watered thoroughly after planting
and are held at 70-75 degrees F. The plastic is removed
at the onset of emergence. A second watering is not needed
until after the plants emerge. To control damping-off the
sand surface is dusted with Captan; also watering is scheduled
so that the surface is dry most of the time. Fusarium wilt
symptoms begin to appear at about 7-8 days after emergence.
About 5-7 days after emergence (at which time cotyledonary
leaves are not quite at full expansion) powdery mildew (Race
1) spores are atomized in water suspension (or are dusted)
across the flats. A clear plastic mist chamber is laid across
the bench at about 1 ft. above the plant tops. Sides are
pinned together to make the structure fairly tight and a
Sears Moist Air Vaporizer is used to maintain relative humidity
at about 90%. Temperature is kept 75 to 85 degrees F. by
adjusting the clipped edges of the plastic sheets used to
make the chamber.
Susceptibles, having powdery mildew lesions on cotyledonary
leaves, are removed. After about 8-10 days flats are taken
from the chamber and are placed for 4-5 days in a cold frame
for acclimatization prior to transplanting in the field.
Symptoms of mildew may or may not continue to appear in
the cold frame depending on ambient air temperature. Continued
onset of wilt symptoms under these conditions seems more
likely to occur.
Because we are on a time schedule and like to transplant
when plants are young, there are temporary escapes from
both diseases. However, we feel that we can eliminate 60-80%
of the susceptible plants prior to removal to the field
and, because they are incubating the diseases, the remaining
susceptible plants show symptoms in the field fairly soon.
Many of these populations also are segregating for the dwarf
or short internode plant form; we space plants close together
in the row and eliminate normal vine types and additional
susceptible plants early in the season; elimination by the
time of female flowering is nearly complete.
The use of nonsterile soil and a fairly low concentration
of inoculum do not provide a clear, quick kill of plants
with moderate degrees of resistance to Fusarium; resistant
plants are not likely to be killed. Although our resistance
source is quite strong, we hope that we are also retaining
minor genes for resistance and that over time this will
result in an increase in horizontal or non-specific resistance.
5. Resistance to Rabbit Feeding in Muskmelon
Warren S. Barham
Basic Vegetable Products, Inc., P.O. Box 599, Vacaville,
California 95688
A muskmelon variety which has been grown near Santa Rosa,
California for about 75 years, and generally referred to
as Crane Melon, was given me. This muskmelon produces large,
sparsely netted, thick, good quality, green flesh fruit.
It was crossed with Gulfstream, a shipping type cantaloupe
developed by Fred Andrus of U.S.D.A. Vegetable Breeding
Laboratory at Charleston, South Carolina. The F1 of Crane
x Gulfstream (C. x G.) was very vigorous and prolific; the
fruit were large, fairly well netted and had good to excellent
flavored, very thick, orange color flesh.
In a planting grown near Dixon, California in 1970, rabbits
seriously damaged all plants of Gulfstream, all other shipping
type cantaloupes, and some F2 plants of C. x G. All of the
plants of Crane, F1 of C. x G. and some of the F2 plants
of C. x G. were undamaged. No evidence could be found of
feeding on plants that were classed as undamaged; whereas,
damaged plants had most of the foliage and tender stems
eaten. There were not enough F2 plants for inheritance studies;
however, it was concluded that resistance is controlled
by one or more dominant genes. No further data on the inheritance
to rabbit feeding has been collected by me. Seed of the
F2 generation have been supplied to two cantaloupe breeders
and a few seed are available if others are interested.
6. Monoecious Muskmelons with Round Fruit
H.M. Munger
Department of Plant Breeding, Cornell University, Ithaca,
N.Y. 14850
For many years we have been transferring the monoecious
gene from Banana into Iroquois with the idea of using it
as a female parent for hybrid seed production. Eleven backcrosses
have been made - 4 to Plant Breeding 13, a round fusarium
resistant line, followed by 7 to Iroquois. In spite of selection
for the most nearly round fruits, the monoecious segregates
have consistently been identifiable by their longer fruit
shape and slightly pointed ends. Andromonoecious segregates
have been indistinguishable from Iroquois during the last
few backcrosses. The monoecious segregates have also had
larger fruit size, difficult slip, less netting, and slightly
inferior flesh color and flavor.
Wall's report of C. melo var. dudaim as a round-fruited
monoecious melon (Euphytica 16:199-208) led us to start
again with this different source of the gene. In the first
four backcrosses the association of monoecious flowering
with longer fruit showed up as it did with the Banana source
of monoecious. At this point, I realized that all crosses
had been made with monoecious plants as female in order
to save the trouble of emasculating and that there might
be a cytoplasmic influence.
Therefore the fifth backcross was made in 1971 with Iroquois
as the female as well as the usual way. Although reciprocals
did not appear different when grown side-by-side in the
field in 1972, the cross with Iroquois as female had already
been grown in the greenhouse and an additional backcross
made, the 6th. Both the fifth and the sixth backcrosses
in the greenhouse gave monoecious plants with fruits more
nearly like Iroquois than we had ever seen before, typical
netting, good slip, and nearly round shape.
The F2 of the sixth backcross was grown in the field in
1973 and most of the monoecious plants gave fruit remarkably
similar to Iroquois and to the andromonoecious segregates
in shape, netting and size. The color and depth of flesh
were not as good as in Iroquois and further backcrosses
are being grown to improve these characteristics.
As a result of expressions of interest from visitors who
saw the round monoecious type, seed in small amounts will
be made available as a germplasm release to melon breeders.
7. Sources of Variation in Evaluating Quality of Squash
Varieties
H.M. Munger
Cornell University, Ithaca, NY
As a laboratory exercise in a plant breeding course, we
have used organoleptic evaluation of winter squash, Cucurbita
maxima, to demonstrate the use of a doubly balanced incomplete
Block design as described by Calvin (Biometrics 10:61-88.
1954). At the same time we get information about some of
our breeding material. The results suggest that subjective
evaluation of quality is not so variable and unreliable
as we originally assumed.
The experiments in 1971 and 1972 both included samples
of 8 varieties, each a composite from about 5 baked fruits.
The design called for 14 blocks with 4 samples in each,
and therefore had 7 replications. Each entry occurred 3
times in the same block with every other entry. Each person
tested one block of 4 samples, rating each one on a scale
from 1 (Very poor) to 5 (Very good). The tasters included
people who like and who dislike squash, people familiar
and unfamiliar with it, and nearly half were from outside
the U.S.
The incomplete block design is used to avoid taster fatigue
which can introduce variability if each taster tries to
rate all the samples. The adjustment of means provided by
the design permits the removal of variability caused by
different tasters having different sets of varieties. Nevertheless,
the adjusted means differed only slightly from the unadjusted
means obtained simply by averaging the seven ratings given
each entry (Table 1). Therefore the experiments in 1971
and 1972 failed to demonstrate as much value for the incomplete
block design as anticipated.
The results do show considerable variation between the
two years for a given entry. Either the varieties responded
differently to growing conditions in the 2 years or five
fruits did not constitute an adequate sample. In squash
at least, it appears than we need to be much more concerned
about the representativeness of the samples presented to
tasters than about the variability of ratings given by tasters.
Table 1. Adjusted and unadjusted mean quality ratings
for squash varieties tasted in a balanced incomplete block
design- 1971 and 1972.
|
|
Quality rating means (5=best) |
|
|
1971 |
1972 |
|
Variety |
Seed Lot |
Adj. |
Unadj. |
Adj. |
Unadj. |
Delicious inbred 509 |
68-13 |
2.3 |
2.3 |
4.1 |
4.1 |
Delicious inbred 509 m.s. |
68-201-4x204 |
3.6 |
3.4 |
|
|
Delicious inbred 515 |
68-14 |
2.4 |
2.4 |
|
|
Delicious inbred 515 m.s. |
68-211x210 |
1.0 |
1.1 |
|
|
Hybrid A (509x515) |
1960 and 1971 seed |
3.1 |
3.0 |
3.4 |
3.1 |
Hybrid A-ms (509x515) |
69-73x74 |
|
|
3.4 |
3.3 |
Hybrid A-ms (509x515) |
69-75x74 |
4.2 |
4.1 |
3.9 |
4.0 |
Queensland Blue |
|
2.4 |
2.6 |
4.1 |
4.0 |
Gold Nugget |
|
2.9 |
2.9 |
2.1 |
2.1 |
Butternut 23 - Asgrow |
|
|
* |
2.0 |
2.0 |
Waltham Butternut - R.E. Young |
|
|
* |
2.7 |
2.9 |
*46 students making a paired comparison in 1971 expressed
a slight but distinct preference for Butternut 23.
8. Breeding for Stalk Lodging Resistance in Sweet Corn
Stuart N. Smith
808 E. Lincolnway, Rte. #2, Ames, Iowa 50010
Minnesota A632 is a dent corn inbred with very good resistance
to stalk lodging. This resistance is being transferred successfully
to sweet corn ear parents, using the same system employed
in developing the massive root system of Nebraska N28 in
sugary lines.
Stalk lodging in sweet corn is important to everyone who
makes use of the product even though it is a primary problem
only to seed producers. The reason is because stalk lodging
frequently reduces seed vitality and this influences cost
both to the consumer and the producer.
Field corn breeders have done commendable work in reducing
stalk lodging where corn is produced for grain. This work
was begun by breeders of open pollinated corn back in the
19th century with major further improvement made by hybrid
seed breeders. Sweet corn has not had the benefit of an
equal amount of research. This stems in part from the fact
that very little of it is harvested for use as grain and
the problem occurs mostly after the crop is mature. The
major cause of this type of lodging is stalk rot, mostly
from various forms of fusarium and diplodia. When stalks
on seed parents break over, the ears are subject to cob
rot, premature germination and incipient kernel rots which
reduce seed vitality.
Good dent corn inbreds offer the best source for improving
stalk lodging in hybrid sweet corn ear parents. Some of
these have extra thick and woody stalk walls and we have
found them apt to carry tough pericarp over into sugary
lines. Others like A632 have a quick transition period from
the green stage where they are highly resistant to stalk
rot, to the dry stage where rot cannot continue due to lack
of moisture. The technique being used is the same as was
followed with good results in transferring the heavy root
system of Nebraska N28 over to sugary lines acceptable in
quality. It consists of one or two generations of selfing
between backcrosses to the recurrent sugary line. Heavy
nitrogen applications are used to insure favorable conditions
for stalk lodging. Selection is rigid for resistance, regardless
of quality, until sugary lines equal to A632 are obtained.
Quality is then sought for in later backcrosses.
9. Uncatalogued Vegetable Varieties Available for Trial
in 1972
This list is aimed at facilitating the exchange of information
about potential new varieties, or new varieties which have
not yet appeared in catalogues. Persons conducting vegetable
variety trials who wish seed of items on this list should
request samples from the sources indicated.
It is the responsibility of the person sending out seed
to specify that it is for trial only, or any other restriction
he may want to place on its use.
Crops are listed alphabetically. For each entry the following
information is given: Designation, source of trial samples,
outstanding characteristics, variety suggested for comparison
(not given separately if mentioned in description), status
of variety (preliminary trial, advanced trial, to be released,
or released) and contributor of information if different
from source of trial samples. Where several samples are
listed consecutively from one source, the address is given
only for the first.
- Bean
- BB1. Warren S. Barham, Basic Vegetable Products,
P.O. Box 599, Vacaville, California 95688. Pole snap
bean similar to Blue Lake. Resistant to mosaic (probably
virus carried by Gladiolus). Selection for resistance
to mosaic was made from pole bean breeding lines 439-1
and 9708-5 received from Dr. W.A. Frazier, Horticulture
Department, Oregon State University. Dr. Frazier has
indicated willingness to answer questions if specific
information on the background is desired. Preliminary
trial.
- Carrot
- Des-Dan. Ronald L. Engle, Dessert Seed Co., Inc.,
PO Box 9008, Brooks, Oregon 97305. An F1 hybrid with
good color and uniformity for processing. Compare
with Danvers 126 and Spartan Bonus. Released.
- Saber. Ronald L. Engle. A hybrid long Nantes for
processed slices or fresh market, good color. Compare
with Hipak Elite. Released.
- Touche. Ronald L. Engle. Hybrid Nantes type, early,
good color, and sweet. Released.
- Dexp. 314-3. Ronald. L. Engle. Early hybrid, with
good color and uniformity for fresh market or processed
slices. Compare with Imperator 58 and Spartan Sweet.
Advanced trial.
- Dexp. 316-3. Ronald L. Engle. An early hybrid with
good color and uniformity for fresh market. Compare
with Imperator 58 and Spartan Sweet. Advanced trial.
- Celery
- 68-51. S. Honma, Department of Horticulture, Michigan
State University, East Lansing, Michigan 48823. Yellow
celery of pascal type, non-bolting. Compare with Cornell
619 or 19. To be released.
- Cucumber
- Ark 71-10, Ark 71-14, Ark 71-37. J.L. Bowers, Department
of Hort. and Forestry, University of Arkansas, Fayetteville,
Ark. 72701. Excellent internal fruit characters such
as freedom from carpel separation, placental cracks,
slow seed development and small seed cavity. Very
high level of resistance to anthracnose and powdery
mildew. Compare with Chipper and Galaxy. Preliminary
trial. J.L. Bowers and M.J. Goode.
- Dexp. 401. Ronald L. Engle, Dessert Seed Co., Inc.,
PO Box 9008, Brooks, Oregon 97305. Hybrid, white spine,
with high yield for mechanical harvest. Compare with
Pioneer. Advanced trial.
- TX-3W-1. L.M. Pike, Horticulture Section Soil and
Crops Sciences Department, Texas A&M University
College Station, Texas 77843. Yield, quality, disease
resistance comparable to Explorer, Carolina (Gy 14A
x 38SC), Pioneer. This is a 3-way hybrid in which
an F1 hybrid utilizing gynoecious and hermaphroditic
inbreds is used as the female parent and a monoecious
inbred as the pollinator in production of the 3-way.
Advanced trial. Release planned in fall of 1973.
- Debonaire. FMC Corporation, Niagara Chemical Div.,
Western Research Center. PO Box 2508, El Macero, California
95618. A long, blunt dark green slicing cucumber hybrid;
65 day maturity; very productive. Slightly lighter
in color than Marketmore 70, but small seed cavity
and multiple disease resistance. Released. (Tom V.
Williams)
- 72-1. H.M. Munger. Department of Plant Breeding,
Cornell University, Ithaca, New York 14850. Uniform
fruit color in Poinsett background, resulting from
five backcrosses to Poinsett. Preliminary trial.
- Hybrid MuP. H.M. Munger. Gynoecious, uniform dark
green slicer, the hybrid of Marketmore 70F x uu Poinsett.
Compare with Gemini. Preliminary trial.
- Hybrid TuP. H.M. Munger. Gynoecious, uniform dark
green slicer hybrid, the F1 of Tablegreen 68 x uu
Poinsett. Compare with Gemini. Preliminary trial.
- 72-196. H.M. Munger. Dwarf plant with fruit similar
to Tablegreen 65. Preliminary trial.
- Lettuce
- Monterey. Edward J. Ryder, US Agricultural Research
Station, Box 5098, Salinas, California 93901. A crisp
head lettuce with resistance to Downy mildew (Western
US strains), uniform, early, vigorous; susceptible
to lettuce mosaic, turnip mosaic; moderate tolerance
to tipburn. Developed primarily for use in Central
Coast Valleys of California. Most likely to do well
in irrigated mineral soil, relatively cool day and
night temperature. Compare with Calmar. Released May
1972.
- Muskmelon
- BC 4. Warren S. Barham, Basic Vegetable Products,
Inc., PO Box 599, Vacaville, California 95688. Resistant
to feeding by rabbits. Compare with US shipping types.
A breeding line. A few seed of F1 and F2 of cross
Crane x Gulfstream available.
- 71-23-4R. H.M. Munger, Department of Plant Breeding,
Cornell University, Ithaca, New York 14850. Delicious
51 type resistant to races 1 and 2 of powdery mildew.
Better lines may be available in a year or two, but
this one derived from 6 backcrosses to Delicious 51
appears to be the best with homozygousity for mildew
resistance at present. Preliminary trial.
- Onion
- Dexp. 729. Ronald L. Engle, Dessert Seed Co., Inc.,
P.O. Box 9008, Brooks, Oregon 97305. A longstorage
hybrid with single centers for Northern mucks, bronze
color, strong scale. Compare with Spartan Banner.
Advanced trial.
- Dexp. 721. Ronald L. Engle. High yielding and good
storage hybrid, Spanish by Yellow Globe. Compare with
Fiesta. Advanced trial.
- NCX 103. FMC Corporation, Niagara Chemical Div.,
Western Research Center. P.O. Box 2508, El Macero,
California 95618. Very uniform, medium sized, high
globe Spanish type with very attractive, tight, golden
brown scales. Earlier maturity than Downings Yellow
Globe and good storageability. To be released. (Tom.
V. Williams)
- Pepper
- 400. Colen Wyatt, Petoseed Co., Inc., Rt. 1 Box
1255, Woodland, California 95695. Early, compact plant
habit, mostly 4 lobes. Compare with Delaware Bell.
To be released.
- Southern Pea
- Ark. 67-542. J.L. Bowers, Department of Hort. and
Forestry, University of Arkansas, Fayetteville, Ark.
72701. This plant type, approximately 4-7 days earlier
than Crimson. Compare with Crimson and Pinkeye Purple
Hull. To be released.
- Spinach
- VA. 62L x 105K. E.A. Borchers, Virginia Truck and
Ornamentals Research Station, P.O. Box 2160, Norfolk,
Virginia 23501. Overwinter, processing type. Semi-savoyed,
dark green, high yielding, blight resistant. Compare
with Hybrid 7, Marathon. Advanced trial.
- Payday. FMC Corporation, Niagara Chemical Div.,
Western Research Center. P.O. Box 2508, El Macero,
California 95618. A semi-savoy productive blue mold
resistant hybrid with a slow bolting tendency. Estimate
50 day maturity. Compare with Northland. Released
variety.
- Squash
- F1 1371. Colen Wyatt, Petoseed Co., Inc., Rt. 1
Box 1255, Woodland, California 95695. Early, productive,
compact medium open plant, with slightly longer fruit.
Compare Goldbar. To be released.
- Seneca XP45. A.D. Taylor; Robson Seed Farms Corp.,
Box 270, Hall, New York 14463. A long slender prolific
type, very productive. Bright yellow smooth skin,
slightly tougher skin than most Summer Squash. Compare
with Seneca Butterbar. Advanced trial.
- Seneca XPG 778. A.D. Taylor. A dark green skin Zucchini
hybrid, fruit length similar to Seneca Zucchini. Early
and very productive. Advanced trial.
- Hybrid Ams. H.M. Munger, Department of Plant Breeding,
Cornell University, Ithaca, New York 14850. A high
quality winter squash hybrid of Green Delicious type.
A parent line segregating 50% male sterile plants
is available as female parent. Advanced trial.
- Sweet Corn
- Florida Sweet. A.J. Oswald, Florida Foundation Seed
Producers, Inc., P.O. Box 14006 Univ. Station, Gainesville,
Florida 32601. A shipping hybrid with high sugar content
retention in storage. This like Illini Xtra Sweet,
is an Sh2 containing corn and must be isolated from
other corn or sib pollinated to get an eating quality
evaluation because of Xenia effects on the kernels
from sweet or field corn pollen. Compare with Illini-Xtra
Sweet. To be released July 1973. (Emil A. Wolf, AREC
at Belle Glade, Florida).
- L1206. Sweet Corn Genetic Service, 808 E. Lincolnway,
Rte. #2, Ames, Iowa 50010. Very dependable producer
with excellent yields in processor quality. Strong
root stalk and root system, desirable for machine
harvesting. Remains in fancy stage very well. Cylindrical
ear shape favorable for cutting. Compare with Midway.
Advanced trial. (Stuart M. Smith).
- S1208. Sweet Corn Genetic Service. Very hardy for
early Spring planting but better texture and flavor
than most earlies. Less starchy with thinner pericarp
and greater smut resistance than Golden Beauty. Advanced
trial. (Stuart M. Smith).
- S1228. Sweet Corn Genetic Service. Exceptionally
rich flavor surpassing most of the fancy yellow hybrids.
A week earlier than Silver Queen, slightly higher
row count. Advanced trial. (Stuart M. Smith).
- S1229. Sweet Corn Genetic Service. Twin eared with
very tight husks and low ear worm damage in the South.
Deep and wide spread root system with dependable yields
under unfavorable climatic conditions. Good resistance
to leaf blight. Compare Iobelle. Advanced trial. (Stuart
M. Smith).
- Seneca XP185A. A.D. Taylor, Robson Seed Farms Corp.,
PO Box 270, Hall, New York 14463. Full season market
corn, good husk protection, numerous flag leaves,
and dark green husks. Mostly 16 row, bright golden
kernels. May have single gene Helminthosporium turcicum
resistance. Compare with Seneca Scout or Iobelle.
Advanced trial.
- Triumphant 11. FMC Corporation, Niagara Chemical
Div., Western Research Center. PO Box 2508, El Macero,
California 95618. Moderately large, attractive ears
with excellent tip fill; late maturity; vigorous plants.
Minimal flag leaves; generally one ear per stalk;
excellent husked appearance. Compare with Merit. Released
variety (Tom V. Williams).
- NCX 242. FMC Corporation. Midseason maturity, very
cylindrical ears, high quality 16-18 rows. Processing
potential especially for whole ear freezing, not many
flags for fresh market. Compare with Jubilee. Advanced
trial. (Tom V. Williams).
- VH652. E.A. Kerr, Horticultural Experiment Station,
Box 246, Simcoe, Ontario N3Y 4L1. High quality and
appearance. Possible replacement for Tastyvee. Advanced
trial.
- VH701. E.A. Kerr. High quality and appearance. Compare
with Summertreat. Advanced trial.
- VH702. E.A. Kerr. Very good quality, appearance
and tip cover. Compare with Seneca Feather. Advanced
trial.
- VH731. E.A. Kerr. Extremely early, good quality,
well filled. Compare with Earlivee. Preliminary trial.
- VH732. E.A. Kerr. Very good quality, 14 to 16 rows.
Compare with Seneca Explorer. Preliminary trial.
- VH733. E.A. Kerr. Early, good quality, long ear,
14 to 16 rows. Compare with Sunnyvee. Preliminary
trial.
- VH734. E.A. Kerr. Excellent quality, good tip cover
and appearance. Compare with Summertreat. Preliminary
trial.
- VH735. E.A. Kerr. Excellent quality, good appearance
and tip cover. Compare with Summertreat. Preliminary
trial.
- Tomato
- 702 VFN. Paul Thomas, Petoseed Co., Inc., Rt. 1
Box 1255, Woodland, California 95695. Resistant to
Verticillium wilt, Fusarium wilt races 1 & 2,
and the common strains of root knot nematode. Determinate
vine, sets well under adverse conditions. Compare
with Walter or Homestead. Advanced trial.
- VA. 1377-3. E.A. Borchers. Virginia Truck and Ornamentals
Research Station, PO Box 2160, Norfolk, Virginia 23501.
Smooth fruit, high yielding, moderately early, fusarium
resistant. Compare with Homestead, Floradel. Advanced
trial.
- H1706. Heinz USA, Agricultural Research Dept., 13737
Middleton Pike, Bowling Green, Ohio 43402. Early to
mid season, pear shape, excellent color, crack and
burst resistance, VF resistance, good emergence, tends
to shatter. To be released.
- ST-16. J.G. Metcalf, Smithfield Experiment Farm,
Box 340, Trinton, Ontario, Canada. Early high crimson.
Compare with New Yorker. Advanced trial.
- ST-19. J.G. Metcalf. V.R., high crimson, excellent
structure. Advanced trial.
- CVF27. Mark W. Martin, Research and Extension Center,
Prosser Washington 99350. Large cherry or salad type
with VF resistance and high level of curly top resistance.
Good stem separation, adapted to machine harvest.
High solids and superior flavor. Does not set well
under adverse conditions. Adapted to production in
the Intermountain West. Advanced trial.
- CVF2054. Mark W. Martin. Market garden, and home
garden type with VF and moderate curly top virus resistance.
Adapted to production in the Intermountain West. Compare
with Ace. Advanced trial.
- V711. E.A. Kerr. Horticultural Experiment Station,
Box 246, Simcoe, Ontario N3Y 4L1. Very early spherical,
concentrated maturity, small fruit. Compare with Sub
Arctic Plenty. Preliminary trial.
- V712. E.A. Kerr. Very early, firm, good color. Compare
with New Yorker. Advanced trial.
- V716. E.A. Kerr. Large paste type, excellent color
and flavor. Well received for pick-your-own production.
Compare with Chico III.
- V721. E.A. Kerr. Very firm and meaty. Compare with
Heinz 1350. Preliminary trial.
- V722. E.A. Kerr. ogc, very large size. Compare with
Heinz 1350. Preliminary trial.
- V729. E.A. Kerr. j-2 ogc, firm pear type, concentrated
maturity. Compare with Chico III. Advanced trial
- Watermelon
- BW4. Warren Barham, Basic Vegetable Products, Inc.,
PO Box 599, Vacaville, California 95688. Midget fruit
4 1/2-5 inch diameter, round, gray, 1/8 to 1/4 inch
rind, very small black seed, firm good texture, yellow
flesh. Some variability in fruit size and quality.
This line is the result of selecting from cross of
B17-1 x Genri. B 17-1 has the same background as Princess
Sweet, shipping type, small seed, resistant to wilt
and anthracnose. Compare with New Hampshire Midget
for size and Genri for size and quality. Preliminary
trial.
10. Stocks Desired
- Cucumber with large seeds, CA palm. Heinz USA, Agricultural
Research Dept., 13737 Middleton Pike, Bowling Green, Ohio
43402
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