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    • Project Overview
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  • Crop & Disease management
    • Cucumber Disease Management
    • Melon Disease Management
    • Squash Disease Management
    • Watermelon Disease Management
    • Integrated Disease Management
  • Breeding & Genomics
    • Development of Genomic Tools for Cucurbit Species
    • Cucurbit Genomics Database
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    • Breeding Cucumber for Disease Resistance
    • Breeding Melon for Disease Resistance
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2020 Cucurbit Cultigen Evaluations

March 8, 2021October 6, 2021 cuccap CucCAP Disease Management Team, Cucurbit Crop & Disease Management Resources

In 2020, the Schultheis lab at NC State conducted cucurbit cultigen evaluations on Squash.

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CucCAP scientists identify QTL for Phytophthora resistance in squash

March 1, 2021March 25, 2021 cuccap CucCAP Squash Team, Featured Articles

CucCAP scientists from the Cornell University research groups of Michael Mazourek and Christine Smart along with Michael Gore’s lab combined linkage mapping and bulked segregant methods for molecular mapping and QTL identification.

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Virus Diseases of Cucurbits | Cornell Vegetables

February 28, 2021September 26, 2023 cuccap Cucurbit Crop & Disease Management Resources

Viruses are among the more common causes of diseases affecting cucurbits in New York. These diseases result in losses through reduction in growth and yield and are responsible for distortion and mottling of fruit, making the product unmarketable.

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Meet the CucCAP Watermelon Team

February 10, 2021April 21, 2021 cuccap CucCAP Watermelon Team

The CucCAP Watermelon team is led by USDA-ARS Research Geneticist Amnon Levi. Co-investigators include Sandra Branham, Cecelia McGregor, Kai-Shu Ling, Shaker Kousik, Umesh Reddy, and Pat Wechter.

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Tropical Squash | Culinary Breeding Network

February 2, 2021March 22, 2021 cuccap CucCAP Squash Team

Linda Wessel Beaver shares some details about breeding tropical squash for virus resistance in the first CucCAP grant with the Culinary Breeding Network’s Winter Squash Week.

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2021 South Florida Melons Progress

February 2, 2021August 19, 2022 cuccap Cucurbit Crop & Disease Management Resources

A Florida watermelon producer discusses adverse weather conditions that can increase the crop’s susceptibility to disease.

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Winter Squash: background, diversity and breeding

February 2, 2021January 22, 2024 cuccap CucCAP Squash Team, Cucurbit Crop & Disease Management Resources

Cornell squash breeder and CucCAP Squash Team leader, Michael Mazarouek discusses the history of breeding winter squash.

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CucCAP scientists test new squash breeding lines for performance and resistance to Phytophthora crown and root rot

February 1, 2021March 31, 2022 cuccap CucCAP Squash Team, Featured Articles

Researchers at Cornell University developed squash breeding lines with increased resistance to Phytophthora crown and root rot.

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CucCAP scientists identify markers for powdery mildew resistance in watermelon

Powdery mildew outbreaks, caused by Podosphaera xanthii, cause reduced yields and fruit quality in watermelon. CucCAP scientists at Clemson University and the USDA Vegetable Laboratory Charleston SC employed a bulked segregant analysis approach using data from 1147 accessions from the USDA Citrullus germplasm collection to perform an extreme-phenotype genome-wide association study (XP-GWAS) of tolerance to P. xanthii race 2W. Kompetitive Allele-Specific PCR (KASP) markers were designed for significant SNPs associated with reduced disease. The best marker in each region explained 21-31% of the variation in powdery mildew tolerance.

For further reading:

Branham et al., 2025. Extreme-phenotype genome-wide association study (XP-GWAS) of powdery mildew race 2 W tolerance in the USDA Citrullus germplasm collection. Scientific Reports. DOI10.1038/s41598-025-89445-8

 

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USDA National Institute of Food and Agriculture U.S. DEPARTMENT OF AGRICULTURE

The Cucurbit Coordinated Agricultural Project (CucCAP) is a USDA-National Institute of Food and Agriculture Specialty Crop Research Initiative grant under award number
2020-51181-32139.

Cooperating Institutions:

Boyce Thompson Institute; Cornell University; Michigan State University; North Carolina State University; Clemson University; University of Puerto Rico; University of Wisconsin; University of Florida; University of Georgia; West Virginia State University; U.S. Department of Agriculture, Agricultural Research Service

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