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    • Project Overview
    • Meet the CucCAP Project Team
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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
    • Breeding Squash for Disease Resistance
    • Breeding Watermelon for Disease Resistance
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CucCAP Project

Contributions to the CucCAP project by the Bioinformatics Team, Cucurbit Crop Breeding Teams, and the Integrated Disease Management Team.

Cucurbit Disease updates | June 2022

June 2, 2022June 2, 2022 cuccap CucCAP Disease Management Team, Cucurbit Crop & Disease Management Resources

On June 1, the CucCAP team observed Cucurbit Downy Mildew on cucumbers in North Carolina and Fusarium wilt on watermelon in South Carolina.

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Cucurbit Downy Mildew Management

May 9, 2022May 24, 2022 cuccap CucCAP Disease Management Team

CucCAP plant pathologist, Anthony Keinath published a factsheet on cucurbit downy mildew management with sections on symptoms and signs, how cucurbit downy mildew spreads, cultural practices to limit cucurbit downy mildew, and spraying for cucurbit downy mildew.

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Cucurbit Disease Factsheets | Cornell Vegetables

May 2, 2022July 11, 2024 cuccap CucCAP Disease Management Team

These factsheets from Cornell CALS can be found on the Cornell Vegetable Program and the Long Island Horticultural Research & Extension Center websites.

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CucCAP researchers review producers’ willingness to pay for new varieties

April 30, 2022April 30, 2022 cuccap Featured Articles

Stated preference surveys are a relatively new approach to measuring specialty crop producers’ valuation of breeding traits.

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CucCAP Bioinformatics team releases version 2 of Cucurbit Genomics Database

April 30, 2022May 24, 2022 cuccap CucCAP Genomics & Bioinformatics Team

Version 2 of the Cucurbit Genomics Database (CuGenDBv2) is up running. The release note was published in April 2022.

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PDMR 16 – Plant Disease Management Reports for Cucurbits

April 22, 2022February 21, 2024 cuccap CucCAP Disease Management Team, Cucurbit Crop & Disease Management Resources

PDMR, Volume 16, 2022
Results of 2021 field trials, Published in 2022.
Plant Disease Management reports for cucumbers and squash.

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Early Career Scientist Spotlight | Kim Heagy

April 21, 2022April 21, 2022 cuccap CucCAP Disease Management Team

Kim Heagy is a graduate student working on a Masters degree in the Department of Horticultural Science at NC State University. Kim is a member of the Schultheis Vegetable Production lab which is part of the CucCAP Integrated Disease Management Team.

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CucCAP scientists map QTL for resistance to powdery mildew in melon

April 4, 2022April 11, 2022 cuccap Featured Articles

Powdery mildew is one of the most important diseases of melon.  CucCAP researchers used a densely genotyped melon population to identify QTL associated with resistance in multiple plant tissues.

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Featured Article

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

 

News, Events, and the latest Cucurbit Disease Information

  • CucCAP Featured Articles
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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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