Breeding activities focus on fruit development and disease resistance in Cucumis (cucumber and melon) crops using a combination of molecular genetic, genomic and transgenic approaches. The CucCAP team is especially interested in early stages of fruit growth and factors influencing fruit size, shape, cuticle and surface properties and resistance to infection by the oomycete pathogen, […]
Phytophthora
The pathogen Phytophthora capsici causes Phytophthora Crown Rot, Phytophthora blight, and Phytophthora fruit rot.
Cucumber (Cucumis sativus) Breeding Line with Young Fruit Resistance to Infection by Phytophthora capsici
Cucumber production in the eastern and midwestern United States is subject to severe losses due to fruit rot caused by the soilborne oomycete pathogen, Phytophthora capsici. P. capsici preferentially infects cucumber fruits, especially young fruit, while leaves and vines remain healthy. Disease is manifested by extensive mycelial growth, sporulation, fruit rot, and tissue collapse. There are currently no commercial cucumber cultivars with resistance to this disease.
Phytophthora blight on Squash and Pumpkins
Phytophthora capsici: In squash fields, Phytophthora capsici causes wilting, crown, root, and fruit rot, plant stunting and death. Since the disease results in a range of symptoms in squash it is often referred to as Phytophthora blight. Sporangia are formed on infected fruit and have a powdered sugar appearance. P. capsici is favored by rain […]
Watermelon Disease Management
Watermelon Diseases Cucumber green mottle mosaic virus: Cucumber green mottle mosaic virus (CGMMV) Downy mildew: Pseudoperonospora cubensis Fusarium wilt Fusarium oxysporum f. sp. niveum (F. oxysporum) Gummy stem blight Didymella bryoniae (anamorph = Phoma cucurbitacearum) Papaya ringspot virus : Papaya ringspot virus (PRSV) Phytophthora fruit rot Phytophthora capsici Powdery mildew Podosphaera xanthii Disease Management Resources Cucurbit Disease […]
Squash Disease Management
Squash Diseases Downy Mildew: Pseudoperonospora cubensis Phytophthora blight: Phytophthora capsici Powdery mildew: Podosphaera xanthii Virus diseases Disease Management Links Cucurbit Disease Factsheets Diagnosing and Managing Phytophthora on Squash poster Plant Disease Clinics Forecasters Field Extension Trials Extension Publications Extension and Industry Presentations Plant Disease Management Reports Production Guides Vegetable Pathology Programs
Cucumber Disease Management
Cucumber Diseases Downy Mildew: Pseudoperonospora cubensis Phytophthora fruit rot: Phytophthora capsici Powdery Mildew: Podosphaera xanthii Disease Management Resources Cucurbit Disease Factsheets Plant Disease Clinics Forecasters Cucumber Cultivar Evaluations Extension Publications Extension and Industry Presentations Plant Disease Management Reports Production Guides Vegetable Pathology Programs
2016 Great Lakes Expo and Michigan Greenhouse Growers Expo
Mary Hausbeck will speak about Downy Mildew Prevention and Control. Dr. Hausbeck and Charles Krasnow will speak about Phytophthora capsici and Fungicide Management Programs.
Breeding Watermelon for Disease Resistance
Citrullus lanatus Fusarium wilt of watermelon Gummy stem blight Phytophthora fruit rot & Powdery mildew Cucumber green mottle mosaic virus Papaya ringspot virus Fusarium wilt of watermelon Fusarium wilt of watermelon is caused by Fusarium oxysporum f. sp. Niveum Fon. It is considered one of the most important diseases of watermelon production in the United States. […]
