The CucCAP cucumber team is breeding cucumbers for resistance to downy mildew and Phytophthora fruit rot.
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Presentations from CucCAP researchers address cucumber breeding, melon pathogens, and watermelon production. Phenotypic Analysis of the U.S. Cucumber PI Core Collection for Fruit Morphological Diversity Ying-Chen Lin, Yiqun Weng, University of Wisconsin and Rebecca Grumet, Michigan State University Continue Reading QTL-Seq of Young Fruit Resistance to Phytophthora Capsici in Cucumber Ying-Chen Lin and Rebecca Grumet, […]
Cucurbit Genomic Team members include Zhangjun Fei (Boyce Thompson Institute), Umesh Reddy (West Virginia St. Univ.), Amnon Levi (USDA, ARS), Yiqun Weng (USDA, ARS), Michael Mazourek (Cornell University), Pat Wechter (USDA, ARS), and Rebecca Grumet (Michigan State University). In closely working with Cornell Genomic Diversity Facilty, the team has set up the genotyping-by-sequencing (GBS) platform for the cucurbit species and have established a GBS data analysis pipeline based on TASSEL-GBS.
CucCAP#1 Final Annual Progress Report, July 2020. Team members include Yiqun Weng (USDA, ARS), Rebecca Grumet (Michigan State University), and Todd Wehner (NC State University).
CucCAP researchers conducted molecular mapping using populations involving WI2757, and uncovered a large paracentric inversion of about 10 megabases in length on cucumber chromosome 1 of WI2757 and found that inversion region harbors genes or quantitative trait loci for fruit length, diameter, fruit shape, fruit number, and flowering time.
The final list of publications and presentations from the CucCAP#1 cucumber team.
CucCAP scientists and collaborators provide an extensive review of the literature to systematically document genes for simply inherited traits, QTL for 130 quantitative traits, and develop recommendations for QTL nomenclature in cucumber. In a separate study, researchers conducted comparative analysis on the genetic basis of fruit size and shape variation among cucumber, melon and watermelon, and revealed both conserved and unique genetic architecture of fruit size/shape variation among cucurbit crops.