Cucurbitaceae '98

Evaluation and Enhancement of
Cucurbit Germplasm


30 November - 4 December 1998

Pacific Grove, Calif.

James D. McCreight, Editor

Organizers

American Society for
Horticultural Science
and

U.S. Department of Agriculture
Agricultural Research Service

Conveners

American Society for Horticultural Science · U.S. Department of Agriculture
Cucurbit Genetics Cooperative · The Cucurbit Network

Scientific Committee:

· James D. McCreight, USDA, ARS, Chair

· Gary W. Elmstrom, Sunseeds

· Laura C. Merrick, University of Maine

· Jack E. Staub, USDA, ARS

· Claude E. Thomas, USDA, ARS

· Susan E. Webb, University of Florida

· Todd C. Wehner, North Carolina State University

Cucurbitaceae '98


Program

Saturday, 28 November Early arrival

Sunday, 29 November Early arrival

Monday, 30 November Arrival

12:00­8:00 pm Registration

6:00 pm Dinner

7:30 pm Welcome Reception

Tuesday, 1 December (am)

7:00 Breakfast

8:30 Welcome and Opening Remarks

J.D. McCreight

Session 1: Germplasm Resources

Moderator: Laura C. Merrick, Iowa State Univeristy

8:40 Dedication: Thomas W. Whitaker

R.W. Robinson and L.C. Merrick

8:50 Underexploited Germplasm Resources of the Cucurbitaceae

Deena Decker-Walters

9:10 Evaluation of the Status of Cucurbita sp. and Minor Cucurbit Genera in the National Plant Germplasm System

Laura C. Merrick

9:25 Allele Frequency Changes in Germplasm Collections: Theoretical Considerations of Mutation and Fitness

J.E. Staub

9:40 Break

9:55 Gene Flow Dynamics among Cultivated and Wild Squash (Cucurbita sp.) in a Traditionally Managed Cropping System

Laura C. Merrick, Salvador Montes-Hernandez, Alma Bautista-Anaya, Juan Carlos Cruz-Avalos, and Misael Cob-Chi

10:10 Participatory Plant Breeding of Squash (Cucurbita sp.) Landraces in Mexico

Clemente Villanueva-Verduzco, Laura C. Merrick, Arturo Martínez-Mirafuentes, Juan Antonio Martínez-Romero, Isaac Meneses-Márquez, Eliseo Nájera-Martínez, María Luisa Rodríguez-Mitzi, Miguel Angel Sánchez-Hernández, and José Luis Vildozola-Tenango

10:25 Taxonomic Classification of Disease-Resistant African Watermelon Germplasm: Tsamma or Citron Melon (Citrullus lanatus var. citroides) and Egusi Melon (C. lanatus var. lanatus)

Laura C. Merrick and Robert Jarret

10:40 Discussion

11:10 Posters

Evaluation of Local Pumpkin Genotypes in the Central Region of Saudi Arabia

A.A. Alsadon, H.H. Hegazi, and I.A. Almousa

Influence of Plant Spacing on 'Connecticut Field' Pumpkin Size, Density, and Yield

Robert J. Dufault and Ahmet Korkmaz

Morphological and Disease Resistance Evaluation in Cucumis melo and its Wild Relatives

M.L. Gómez-Guillamón, E. Moriones, M. Luis-Arteaga, J.M. Alvarez, J.A. Torés, A.I. López-Sesé, I. Cánovas, F. Sánchez, and R. Camero

Diversity and Heterosis in Bittergourd (Momordica charantia) and Snakegourd (Trichosanthes anguina)

K.V. Peter and S. Rajan

Seed Development and Seed Fill in Hull-less Seeded Cultigens of Pumpkin (Cucurbita pepo L.)

Kelly J. Vining and Brent Loy

Horticultural Characterization and Biodiversity of Chilacayote (Cucurbita ficifolia Bouché), a High-altitude-adapted Squash

Timoteo Valdez-Hernández, Laura C. Merrick, and Clemente Villanueva-Verduzco

Resistance in Squash (Cucurbita sp.) to Maize (Zea mays L.) Herbicides

Clemente Villanueva-Verduzco, Manuel de Jesus Díaz-Rodríguez, Angel Delgadillo-García, Miguel Raya-Hernandez, Rudi Eli Albores-González, and Erubey González-Rodríguez

12:00 pm Lunch

Business Meeting: Cucurbit Genetics Cooperative

Timothy Ng

Tuesday, 1 December (pm)

Session 2: Entomology

Moderator: Susan E. Webb, University of Florida

1:30 Dedication: Reginald H. Painter

A.N. Kishaba

Cucurbitaceae '98


1:40 Insect Resistance in Cucurbits: 1992­98

Susan E. Webb

2:00 Genetic Analysis of Resistance to Whitefly Silvering in Cucurbita pepo L.

R. Bruce Carle, Susan Webb, and Annette Chandler

2:20 Zucchini Squash Genotypes Resistant to Whitefly-induced Squash Silverleaf Disorder

Yasmin J. Cardoza, Heather J. McAuslane, and Susan E. Webb

2:40 Break

2:55 Glabrous-leaf Cantaloupe: A Source of Host Plant Resistance to Whiteflies

David Riley, David Wolff, and Dean Batal

3:15 Resistance to Western Spotted and Striped Cucumber Beetle in Melon

A.N. Kishaba, S.J. Castle, D.L. Coudriet, J.D. McCreight, and G.W. Bohn

3:30 Biological Control of Cucumber Beetles (Coleoptera: Chrysomelidae) and Cucurbit Wilt Disease with Plant-growth-promoting Rhizobacteria

Geoffrey Zehnder, Joseph Kloepper, Changbin Yao, Sadik Tuzun, Oyette Chambliss, and Richard Shelby

3:50 Discussion

4:20 Posters

Silverleaf Whitefly Resistance Strategies in Melon

James D. McCreight and Alvin W. Simmons

Sources of Whitefly-induced Silvering Resistance in Cucurbita

Linda Wessel-Beaver

6:00 Dinner

7:30 Watermelon Research Group Meeting

B.D. Bruton

7:30 Mixer

Wednesday, 2 December (am)

7:00 Breakfast

Business Meeting: National Muskmelon Research Group

J.D. McCreight

8:25 Opening Remarks

J.D. McCreight

Session 3: Pathology

Moderator: Claude E. Thomas, USDA, ARS, Charleston

8:30 Dedication: Rosario Provvidenti

Thomas A. Zitter

8:40 Development of Disease-resistant Cucurbit Crops

Claude E. Thomas

9:00 Cucurbit Viruses: The Classics and the Emerging

Hervé Lecoq, Gail Wisler, and Michel Pitrat

9:20 Soilborne Diseases in Cucurbitaceae: Pathogen Virulence and Host Resistance

B.D. Bruton

9:40 Break

9:55 Resistance to Fungal Diseases of Foliage in Melon

M. Pitrat, C. Dogimont, and M. Bardin

10:15 Occurrence of Fusarium Crown and Root Rot, a New Disease on Greenhouse Cucumbers in British Columbia, and Methods for Disease Control

Z.K. Punja, M. Parker, S. Rose, D. Louie, and K. Ng

10:30 Forecasting Long-distance Movement of Cucurbit Downy Mildew

G.J. Holmes, C.E. Main, and T.Z. Keever

10:45 Discussion

11:15 Posters

Carbohydrate Partitioning, Cultural Practices, and Vine Decline Diseases of Cucurbits

Benny D. Bruton, Vincent M. Russo, Jose Garcia-Jimenez, and Marvin E. Miller

Integrated Management of Melon Vine Decline Caused by Monosporascus cannonballus Using Grafting and Chemical Treatments Applied Pre- and Postplanting

M. Edelstein, R. Cohen, S. Shriber, S. Pivonia, D. Shtienberg

Evaluation of Disease Management Strategies for Control of Phytophthora Crown Rot of Summer Squash

G.J. Holmes and M.E. Lancaster

Sensitivity of Cucurbita pepo Experimental Lines and Varieties to Phytophthora Crown Rot and Fruit Rot

Margaret Tuttle McGrath

The Effect of Fruit Load on the Transpiration Rate and Plant Collapse in Melon (Cucumis melo L.) Infected with Monosporascus cannonballus

S. Pivonia, J. Kigel, R. Cohen, and J. Kigel

Cucurbitaceae '98


Host Range of Pseudoperonospora cubensis (Berk & Curt.) Rostow Causing Downy Mildew of Bittergourd (Momordica charantia L.)

Mini Simon, Sally K. Mathew, and M. Abdul Vahab

12:00 pm Lunch

Wednesday, 2 December (pm)

Session 4: Industry

Moderator: Donald N. Maynard, University of Florida

1:30 Western U. S. Melon Production

Steve Smith, Turlock Fruit Co.

1:50 Innovative Marketing of Cucurbits

Frieda Caplan, Frieda's Inc.

2:10 Discussion

2:40 Introduction to Asilomar and Monterey Peninsula

2:55 Board bus for Monterey Bay Aquarium

5:40 Return to Asilomar

6:00 Dinner

7:30 Mixer

Thursday, 3 December (am)

7:00 Breakfast

Business Meeting: Squash Breeders

Laura Merrick

8:25 Opening Remarks

J.D. McCreight

Session 5: Breeding

Moderator: Gary W. Elmstrom, Sunseeds

8:30 Dedication: William Carroll Barnes

Richard L. Lower

8:40 Cucurbit Genetics and BreedingAn Historical Perspective and a Look into the Future

Richard L. Lower

9:00 Association of Seed Size and Dimensions with Fruit Shape in Cucurbita pepo

H.S. Paris and H. Nerson

9:15 Exogenous Brassinosteroids Influence Sex Expression and Vegetative Development of Cucumber (Cucumis sativus L.) Plants

Katerina Papadopoulous and Rebecca Grumet

9:30 Break

9:45 Breeding Melon for Resistance to Lettuce Infectious Yellows Virus

James D. McCreight

10:00 Relationship of Watermelon Genotype and Ploidy to Incidence of Yellow Vine Disease

S.D. Pair and B.D. Bruton

10:15 Effects of Monosporascus cannonballus on Root Traits of Susceptible and Tolerant Melon (Cucumis melo L.) Cultivars

Kevin Crosby

10:30 Discussion

11:00 Posters

Performance of Cucumis melo L. Hybrids and their Heterosis for Fruit Quality in Three-way Reciprocal Crosses

Alejandro Ching and Liyang Wu

Root Acclimation to Chilling Root Temperature in Figleaf Gourd Plants: The Role of Root Plasma Membrane H+-ATPase

Sung Ju Ahn, Yang Ju Im, Gap Chae Chung, and

Baik Ho Cho

Yield Components in Cucumber: An Overview

Christopher S. Cramer and Todd C. Wehner

Fruit Yield and Yield Components of Cucumber Populations Grown at Low Plant Density
Christopher S. Cramer and Todd C. Wehner

Application of Molecular Markers in Breeding Zucchini Yellow Mosaic Virus (ZYMV) Tolerant Pumpkin (Cucurbita pepo L.) Varieties in Austria

T. Lelley, S.M. Henglmueller, and M. Riedle-Bauer

Horticultural Characters for the Dihaploid Plants Derived from Anther Culture in Cucurbita pepo L.

E.I. Metwally, S.A. Moustafa, B.I. El-Sawy, and T.A. Shalaby

Gynoecy in Cucumber and Muskmelon

T.A. More and V.S. Seshadri

Production and Characteristics of Japanese Cucumber

Yoshiteru Sakata, Masami Morishita, and Keita Sugiyama

Induction of Seedless Watermelons by Pseudogamy

Keita Sugiyama and Masami Morishita

Production of Triploid Watermelon Transplants

Charles S. Vavrina and Donald N. Maynard

Cucurbitaceae '98


12:00 pm Lunch

Business Meetings: Pickling Cucumber Improvement Committee

Todd C. Wehner and Jack E. Staub

Thursday, 3 December (pm)

Session 6: Genetics

Moderator: Todd C. Wehner, North Carolina State University

1:30 Dedication: Henry M. Munger

Molly Kyle and Dermot Coyne

1:40 Intraspecific Classification of Cucumis melo: How is the Morphological and Biochemical Variation of Melons Reflected at the DNA Level?

Rafael Perl-Treves, Asya Stepansky, Arthur A. Schaffer, and Irina Kovalski

1:55 Characterization of Sources of Resistance to the Watermelon Strain of Papaya Ringspot Potyvirus in Cucumber: Allelism and Cosegregation with other Potyvirus Resistances

R. Grumet, E. Kabelka, S. McQueen, and R. Humphrey

2:10 Inheritance of the Resistance to Squash Leaf Curl Virus in Cucurbita pepo L.

Clara E. Montes-Garcia, Sergio Garza-Ortega, and Judith K. Brown

2:25 Break

2:40 Relationships among Accessions of Cucurbita pepo Based on ISSR Analysis

N. Katzir, E. Leshzeshen, G. Tzuri, N. Reis, Y. Danin-Poleg, and H. S. Paris

2:55 A New Synthetic Amphidiploid in Cucumis from a C. sativus x C. hystrix F1 Interspecific Hybrid

Jinfeng Chen, Jeffrey W. Adelberg, Jack E. Staub, Halina T. Sjorupska, and Bill B. Rhodes

3:10 Discussion

3:40 Posters

Development of Cucumber Cultivars Resistant to Root-knot Nematodes

S. Alan Walters, Todd C. Wehner, and Kenneth R. Barker

4:30 Cucurbit Crop Germplasm Committee Meeting

J.D. McCreight

6:00 Dinner

7:30 Mixer

Friday, 4 December (am)

7:00 Breakfast

8:25 Opening Remarks

J.D. McCreight

Session 7: Mapping and Markers

Moderator: Jack E. Staub, USDA, ARS, Madison

8:30 Theoretical Expectations for the Potential Use of Genetic Markers in Marker-assisted Selection

J.E. Staub and Thomas Horejsi


8:45 Simple Sequence Repeats as Reference Points in Cucumis Mapping

Y. Danin-Poleg, N. Reis, G. Tzuri, and N. Katzir

9:05 Genome Mapping of Melon (Cucumis melo L.) for Localizing Disease Resistance Genes

Yi-Hong Wang, Claude E. Thomas, and Ralph A. Dean

9:25 Toward a Sturdy Genetic Map of Melon (Cucumis melo L.)

Marc Oliver, Jordi García-Mas, Ana Isabel López, Humberto Gómez-Paniagua, and M. Carmen de Vicente

9:45 Break and Posters

Markers Linked to Agronomic Traits in Cucumber (Cucumis sativus L.)

Hidemasa Mizusawa

10:15 Construction of a Genetic Map of Melon with Molecular Markers and Horticultural Traits

C. Perin, L. Hagen, C. Dogimont, V. De Conto, and M. Pitrat

10:35 AFLP Markers Linked to Fom-2, a Gene Conferring Resistance to Fusarium Wilt of Melon (Cucumis melo L.)

Yi-Hong Wang, Claude E. Thomas, and Ralph A. Dean

10:50 Discussion

11:20 Farewell and Closing Remarks

J.D. McCreight

12:00 pm Lunch

1:00 pm Departure

Cucurbitaceae '98


Table of Contents

Dedication: Thomas W. Whitaker

R.W. Robinson and L.C. Merrick 10

Underexploited Germplasm Resources of the Cucurbitaceae

Deena Decker-Walters 17

Allele Frequency Changes in Germplasm Collections: Theoretical Considerations of Mutation and Fitness

J.E. Staub 31

Participatory Plant Breeding of Squash (Cucurbita sp.) Landraces in Mexico

Clemente Villanueva-Verduzco, Laura C. Merrick, Arturo Martínez-Mirafuentes, Juan Antonio Martínez-Romero, Isaac Meneses-Márquez, Eliseo Nájera-Martínez, María Luisa Rodríguez-Mitzi, Miguel Angel Sánchez-Hernández,

and José Luis Vildozola-Tenango 38

Evaluation of Local Pumpkin Genotypes in the Central Region of Saudi Arabia

A.A. Alsadon, H.H. Hegazi, and I.A. Almousa 43

Influence of Plant Spacing on 'Connecticut Field' Pumpkin Size, Density, and Yield

Robert J. Dufault and Ahmet Korkmaz 51


Morphological and Disease Resistance Evaluation in Cucumis melo and its Wild Relatives

M.L. Gómez-Guillamón, E. Moriones, M. Luis-Arteaga, J.M. Alvarez, J.A. Torés, A.I. López-Sesé, I. Cánovas,

F. Sánchez, and R. Camero 53

Diversity and Heterosis in Bittergourd (Momordica charantia) and Snakegourd (Trichosanthes anguina)

K.V. Peter and S. Rajan 62

Seed Development and Seed Fill in Hull-less Seeded Cultigens of Pumpkin (Cucurbita pepo L.)

Kelly J. Vining and Brent Loy 64


Horticultural Characterization and Biodiversity of Chilacayote (Cucurbita ficifolia Bouché), a

High-altitude-adapted Squash

Timoteo Valdez-Hernández, Laura C. Merrick, and Clemente Villanueva-Verduzco 70

Resistance in Squash (Cucurbita sp.) to Maize (Zea mays L.) Herbicides

Clemente Villanueva-Verduzco, Manuel de Jesus Díaz-Rodríguez, Angel Delgadillo-García,

Miguel Raya-Hernandez, Rudi Eli Albores-González, and Erubey González-Rodríguez 73

Dedication: Reginald H. Painter
A.N. Kishaba 76

Insect Resistance in Cucurbits: 1992­98

Susan E. Webb 79


Genetic Analysis of Resistance to Whitefly Silvering in Cucurbita pepo L.

R. Bruce Carle, Susan Webb, Annette Chandler 84

Zucchini Squash Genotypes Resistant to Whitefly-induced Squash Silverleaf Disorder

Yasmin J. Cardoza, Heather J. McAuslane, and Susan E. Webb 90

Glabrous-leaf Cantaloupe: A Source of Host Plant Resistance to Whiteflies

David Riley, David Wolff, and Dean Batal 95

Cucurbitaceae '98


Resistance to Western Spotted and Striped Cucumber Beetle in Melon

A.N. Kishaba, S.J. Castle, D.L. Coudriet, J.D. McCreight, and G.W. Bohn 101

Biological Control of Cucumber Beetles (Coleoptera: Chrysomelidae) and Cucurbit Wilt Disease with

Plant-growth-promoting Rhizobacteria

Geoffrey Zehnder, Joseph Kloepper, Changbin Yao, Sadik Tuzun, Oyette Chambliss, and

Richard Shelby 106

Silverleaf Whitefly Resistance Strategies in Melon

James D. McCreight and Alvin W. Simmons 113

Sources of Whitefly-induced Silvering Resistance in Cucurbita

Linda Wessel-Beaver 118

Dedication: Rosario Provvidenti
Thomas A. Zitter 123

Development of Disease-resistant Cucurbit Crops

Claude E. Thomas 125

Cucurbit Viruses: The Classics and the Emerging

Hervé Lecoq, Gail Wisler, and Michel Pitrat 126

Soilborne Diseases in Cucurbitaceae: Pathogen Virulence and Host Resistance

B.D. Bruton 143

Resistance to Fungal Diseases of Foliage in Melon

M. Pitrat, C. Dogimont, and M. Bardin 167

Occurrence of Fusarium Crown and Root Rot, a New Disease on Greenhouse Cucumbers in

British Columbia, and Methods for Disease Control

Z.K. Punja, M. Parker, S. Rose, D. Louie, and K. Ng 174

Forecasting Long-distance Movement of Cucurbit Downy Mildew

G.J. Holmes, C.E. Main, and T.Z. Keever 186

Carbohydrate Partitioning, Cultural Practices, and Vine Decline Diseases of Cucurbits

Benny D. Bruton and Vincent M. Russo, Jose Garcia-Jimenez, and Marvin E. Miller 189


Integrated Management of Melon Vine Decline caused by Monosporascus cannonballus Using Grafting and Chemical Treatments Applied Pre- and Postplanting

M. Edelstein, R. Cohen, S. Shriber, S. Pivonia, D. Shtienberg 201

Evaluation of Disease Management Strategies for Control of Phytophthora Crown Rot of Summer Squash

G.J. Holmes and M.E. Lancaster 208

Sensitivity of Cucurbita pepo Experimental Lines and Varieties to Phytophthora Crown Rot and Fruit Rot

Margaret Tuttle McGrath 212

The Effect of Fruit Load on the Transpiration Rate and Plant Collapse in Melon (Cucumis melo L.) Infected

with Monosporascus cannonballus

S. Pivonia, J. Kigel, R. Cohen, and J. Kigel 217

Host Range of Pseudoperonospora cubensis (Berk & Curt.) Rostow Causing Downy Mildew of Bittergourd (Momordica charantia L.)

Mini Simon, Sally K. Mathew, and M. Abdul Vahab 221

Cucurbitaceae '98


Dedication: William Carroll Barnes

Richard L. Lower 223

Cucurbit Genetics and BreedingAn Historical Perspective and a Look into the Future

Richard L. Lower 225

Association of Seed Size and Dimensions with Fruit Shape in Cucurbita pepo

H. S. Paris and H. Nerson 230

Exogenous Brassinosteroids Influence Sex Expression and Vegetative Development of Cucumber

(Cucumis sativus L.) Plants

Katerina Papadopoulous and Rebecca Grumet 235

Breeding Melon for Resistance to Lettuce Infectious Yellows Virus

James D. McCreight 241

Relationship of Watermelon Genotype and Ploidy to Incidence of Yellow Vine Disease

S.D. Pair and B.D. Bruton 248

Effects of Monosporascus cannonballus on Root Traits of Susceptible and Tolerant Melon (Cucumis melo L.) Cultivars
Kevin Crosby 253

Performance of Cucumis melo L. Hybrids and their Heterosis for Fruit Quality in Three-way Reciprocal Crosses

Alejandro Ching and Liyang Wu 257

Root Acclimation to Chilling Root Temperature in Figleaf Gourd Plants: The Role of Root Plasma Membrane

H+-ATPase

Sung Ju Ahn, Yang Ju Im, Gap Chae Chung, and Baik Ho Cho 264

Yield Components in Cucumber: An Overview

Christopher S. Cramer and Todd C. Wehner 271

Fruit Yield and Yield Components of Cucumber Populations Grown at Low Plant Density

Christopher S. Cramer and Todd C. Wehner 277

Application of Molecular Markers in Breeding Zucchini Yellow Mosaic Virus (ZYMV) Tolerant Pumpkin
(Cucurbita pepo L.) Varieties in Austria

T. Lelley, S.M. Henglmueller, and M. Riedle-Bauer 286

Horticultural Characters for the Dihaploid Plants Derived from Anther Culture in Cucurbita pepo L.

E.I. Metwally, S.A. Moustafa, B.I. El-Sawy, and T.A. Shalaby 287

Gynoecy in Cucumber and Muskmelon

T.A. More and V.S. Seshadri 291

Production and Characteristics of Japanese Cucumber
Yoshiteru Sakata, Masami Morishita, and Keita Sugiyama 292

Induction of Seedless Watermelons by Pseudogamy

Keita Sugiyama and Masami Morishita 297

Cucurbitaceae '98


Production of Triploid Watermelon Transplants

Charles S. Vavrina and Donald N. Maynard 300

Dedication: Henry M. Munger

Molly Kyle and Dermot Coyne 304

Intraspecific Classification of Cucumis melo: How is the Morphological and Biochemical Variation of Melons Reflected at the DNA Level?

Rafael Perl-Treves, Asya Stepansky, Arthur A. Schaffer, and Irina Kovalski 310

Characterization of Sources of Resistance to the Watermelon Strain of Papaya Ringspot Potyvirus in Cucumber: Allelism and Cosegregation with other Potyvirus Resistances

R. Grumet, E. Kabelka, S. McQueen, and R. Humphrey 320

Inheritance of the Resistance to Squash Leaf Curl Virus in Cucurbita pepo L.

Clara E. Montes-Garcia, Sergio Garza-Ortega, and Judith K. Brown 328

Relationships among Accessions of Cucurbita pepo Based on ISSR Analysis

N. Katzir, E. Leshzeshen, G. Tzuri, N. Reis, Y. Danin-Poleg, and H. S. Paris 331

A New Synthetic Amphidiploid in Cucumis from a C. sativus x C. hystrix F1 Interspecific Hybrid

Jinfeng Chen, Jeffrey W. Adelberg, Jack E. Staub, Halina T. Sjorupska, and Bill B. Rhodes 336

Development of Cucumber Cultivars Resistant to Root-knot Nematodes

S. Alan Walters, Todd C. Wehner, and Kenneth R. Barker 340

Theoretical Expectations for the Potential Use of Genetic Markers in Marker-assisted Selection

J. E. Staub and Thomas Horejsi 342

Simple Sequence Repeats as Reference Points in Cucumis Mapping

Y. Danin-Poleg, N. Reis, G. Tzuri, and N. Katzir 349

Genome Mapping of Melon (Cucumis melo L.) for Localizing Disease Resistance Genes

Yi-Hong Wang, Claude E. Thomas, and Ralph A. Dean 354

Toward a Sturdy Genetic Map of Melon (Cucumis melo L.)

Marc Oliver, Jordi García-Mas, Ana Isabel López, Humberto Gómez-Paniagua, and

M. Carmen de Vicente 362

Markers Linked to Agronomic Traits of Cucumber (Cucumis sativus L.)

Hidemasa Mizusawa 366

Construction of a Genetic Map of Melon with Molecular Markers and Horticultural Traits

C. Perin, L. Hagen, C. Dogimont, V. De Conto, and M. Pitrat 370

AFLP Markers Linked to Fom-2, a Gene Conferring Resistance to Fusarium Wilt of Melon (Cucumis melo L.)

Yi-Hong Wang, Claude E. Thomas, and Ralph A. Dean 377

Cucurbitaceae '98