CucCAP Vegetable Pathologist, Mary Hausbeck, discusses Phytophthora susceptiblity in cucumbers, summer squash and zucchini. Disease symptoms on fruit can take a few days to appear after infection. Fruit can appear healthy at harvest and then develop disease symptoms during transit or on grocers’ shelves. The classic symptom of phytophthora is a white, powdered sugar appearance. Cucurbits […]
Gummy stem blight (GSB), also known as black rot, is a common issue for watermelon producers in the Southeast. Didymella bryoniae, the fungus that causes GSB, favors warm and humid weather, leaving the Southeast growing region susceptible to the disease’s devastating effects. If not managed well, it can cause significant yield loss for growers. Currently labeled […]
Fusarium wilt (FW) and papaya ring-spot virus-watermelon strain (PRSV-W) are important diseases of watermelon, causing serious damage to the crop. Multiple disease screens of the USDA watermelon germplasm collection have highlighted the value of wild type watermelons as a source for enhancing resistance to diseases in modern watermelon cultivars. The CucCAP team at the USDA, […]
The U.S. Department of Agriculture (USDA) announced today that it is seeking nominations of qualified watermelon producers and handlers for four seats on the National Watermelon Promotion Board. Secretary Sonny Perdue will appoint individuals to serve terms of office that will begin Jan.1, 2021, and end Dec. 31, 2023. This was reported on the USDA […]
Researchers at the University of Florida Institute of Food and Agricultural Sciences are studying grafted watermelon seedlings because of the advantages they can provide to growers. The grafted seedlings, an intentional fusion of plant parts, are resistant to fusarium wilt and tolerant to cold temperatures. Continue Reading
University of Florida presenters at the Florida Ag Expo in November discussed control Downy Mildew, Powdery Mildew, and Gummy Stem Blight on Cucurbits.
CucCAP participants at PAG XXVIII include cucurbit breeders and genomic scientists. The cucurbit session organizers are Amnon Levi and Patrick Wechter. Presentations by CucCAP authors include: QTL and Transcrptomic Analyses Implicate Cuticule Transcription Factor Shine As a Source of Natural Variation for Epidermal Traits in Cucumber: Zhangjun Fei, Rebecca Grumet, Ben N. Mansfeld, and Yiqun Weng De Novo Genome Assembly of Sweet […]
The occurrence of powdery mildew of watermelon has significantly increased in recent years. While the majority of the watermelon varieties evaluated in South Carolina were susceptible to powdery mildew, the seedless variety Suprema and seeded variety Declaration were relatively less susceptible and the commercial pollenizers Lion, SP5 and SP6 were resistant across three years of testing. Because of the frequent […]