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    • Cucumber Disease Management
    • Melon Disease Management
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    • Development of Genomic Tools for Cucurbit Species
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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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Cucurbit Downy Mildew epidemic updates April 2022 | ipmPIPE

April 30, 2022May 24, 2022 cuccap Cucurbit Crop & Disease Management Resources

First reports of Cucurbit Downy Mildew in the U.S. in 2022 were reported in Florida in the end of April.

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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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Fusarium Wilt Observed in North Florida Watermelons

April 30, 2022May 5, 2022 cuccap Cucurbit Crop & Disease Management Resources

Early symptoms of Fusarium wilt appear as dull gray-green leaves which wilt during the hottest time of the day. While plants recover at night, the symptoms eventually become permanent over time. Infected plants will collapse and die.

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Powdery Mildew Detected in North Florida Watermelon

April 28, 2022May 5, 2022 cuccap Cucurbit Crop & Disease Management Resources

Symptoms of the disease on watermelon plants appear as yellow blotches on the oldest leaves first.

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North Florida Watching for Powdery Mildew

April 25, 2022June 2, 2022 cuccap Cucurbit Crop & Disease Management Resources

Florida has a rapid diagnostic program in place for farmers to use. If they suspect that their crop has powdery mildew, the grower should reach out to their county Extension agent who will help them send a sample to the lab.

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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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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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