Gregory Inzinna hopes to identify resistance genes in Cucurbita and provide the seed and vegetable industry with resistant breeding lines and markers they can use in their work.
The CucCAP squash team reported on project progress and ongoing research in April 2023.
Prerna Sabharwal is a graduate student working on her PhD in the Department of Horticultural Sciences at the University of Florida. Her major Professor is CucCAP Squash breeder, Dr. Geoffrey Meru. The focus of Prerna’s research includes plant breeding, plant pathology, and genomics.
The CucCAP squash team published 6 journal articles in 2022 & 2023, 7 journal articles in 2021, and 5 journal articles in 2020.
This article presents the analysis of genotype data generated through genotyping-by-sequencing of the USDA germplasm collections of Cucurbita pepo, C. moschata, and C. maxima.
Papaya ringspot virus-W (PRSV-W) causes severe yield losses in squash production. The Meru laboratory at the University of Florida identified a single QTL for resistance on Chromosome 09 of the C. moschata genome. Subsequent testing identified two SNP markers as potential targets for marker-assisted selection. The findings of this study will facilitate breeding for resistance against PRSV-W in commercial squash cultivars.
Libby is identifying which of Michael Mazourek’s Cucurbita moschata and C. maxima breeding lines are: 1) resistant to powdery mildew and 2) candidate replacements for the susceptible cultivars used in the processing industry.
Scientists at the University of Florida led by Geoffrey Meru characterized resistance to Phytophthora crown rot in PI 181761 and identified a major QTL on chromsome 13. Several SNP markers were designed to target this QTL for marker-assisted selection.