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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
    • 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.

CucCAP researchers demonstrate the ability of powdery mildew resistant rootstocks to protect susceptible watermelon scion seedlings

October 8, 2018June 3, 2022 cuccap CucCAP Watermelon Team, Featured Articles

The group determined that bottle gourd rootstocks were effective in imparting resistance to the susceptible watermelon scion and released the two bottle gourd rootstocks that were the most effective in conferring resistance.

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Cucurbitaceae 2018

October 5, 2018June 2, 2022 cuccap CucCAP Project

Follow CUC 2018 on  Twitter.

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USDA 2018 Specialty Crop Block Grant Program Recipients

September 30, 2018December 6, 2023 cuccap CucCAP Project

CucCAP researchers are among grant recipients from the USDA Specialty Crop Block Grant Program in 2018

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Project GREEEN 20th Anniversary | MSU AgBioResearch

September 20, 2018September 27, 2023 cuccap CucCAP Cucumber Team, Cucurbit Crop & Disease Management Resources

Project GREEEN supported Dr. Hausbeck’s research into the emerging cucurbit downy mildew problem in Michigan.

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PDMR 12 – Plant Disease Management Reports for Cucurbits

September 16, 2018November 14, 2023 cuccap CucCAP Disease Management Team, Cucurbit Crop & Disease Management Resources

PDMR, Volume 12, 2018.
Results of 2016 and 2017 field trials, Published in 2018.
Plant Disease Management reports for cucumber, squash, and, pumpkin.

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CucCAP researchers develop high-density map and identify QTL for resistance to Fusarium in melon

September 5, 2018March 22, 2022 cuccap Cucurbit Genetics, Genomics, & Pathology, Featured Articles

CucCAP researchers at the U.S. Vegetable Laboratory in Charleston, SC collaborated with the Boyce Thompson Institute in Ithaca, NY to generate the highest density genetic map to date for melon.

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Downy mildew found in Michigan cucumbers in 2018 | MSU Extension Vegetables

July 26, 2018September 27, 2023 cuccap CucCAP Disease Management Team

Growers on the west side of Michigan should consider fungicide sprays for cucumbers and melons (watermelons, cantaloupe, muskmelon) now that downy mildew has been verified in Berrien County on July 24, 2018. Read this article from MSU Extension about the downy mildew outbreak.  

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Time for downy mildew protectant sprays for cucumbers | MSU Extension Vegetables

June 28, 2018September 27, 2023 cuccap CucCAP Cucumber Team, CucCAP Disease Management Team

As we near the beginning of July, it’s important to note this is typically the time of year we expect to find the first downy mildew symptoms on cucumber. Read more about this destructive disease on cucurbits.

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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

 

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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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