2019 Cucurbit Genetics Cooperative Report

CGC Report #42    Watermelon (Citrullus lanatus)  Resistance Response of Citrullus Genotypes to Stagonosporopsis Isolates Causing Gummy Stem Blight. Winnie Gimode, Marin Lonnee and Cecilia McGregor A New Watermelon Variety ‘Longshengjiafeng’ with High Quality and High Resistance to Fusarium Wilt. Q. Wang, Y.H. Jia, W. Yan, Y. K. Fu, H.B. You How Russian Breeders Discovered […]

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2019 CGC Reports update

The 2019 CGC report will be published soon. Use the following links to view recent CGC reports by category. Cucumber (Cucumis sativus) Melon (Cucumis melo) Squash and Pumpkin (Cucurbita spp.) Other Cucurbit Genera and Species Reports Watermelon (Citrullus lanatus) Annual list of Reports Reports from Previous years Links below CGC Reports can be viewed by category […]

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Evaluation of Two Field Inoculation Methods for Testing Resistance to Bacterial Fruit Blotch in Watermelon Fruit

Bacterial fruit blotch (BFB) caused by Acidovoraxcitrulli is a major seed-borne disease that affects watermelon (Citrullus lanatus) seedling and fruit production around the world (5,9). A. citrulli can infect all growth stages of the watermelon plant: seeds, seedlings, foliage, flowers, and fruit(5). The scant research on fruit resistance in favor of foliar resistance has three […]

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2018 Cucurbit Genetics Cooperative Report

CGC Report #41 Watermelon (Citrullus lanatus) Evaluation of Two Field Inoculation Methods for Testing Resistance to Bacterial Fruit Blotch in Watermelon Fruit. James D. Daley and Todd C. Wehner Inovation Research on Germplasm Resources of Watermelon with Resistance to Fusarium Wilt X.Q. Wang, W. Yan., Y.H. Jia, Y.K. Fu and H.B. You Cucumber (Cucumis sativus) […]

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Pathotypes and Races of Pseudoperonospora cubensis – Different Concepts of Virulence Differentiation

Host-parasite interactions between Cucurbitaceae and P. cubensis exhibit significant variation. This contribution reviews the current state of knowledge regarding characterization of P. cubensis virulence variation on the level of pathotypes (variation in host genera and species host-range) and races (variation in intraspecific level). However, our knowledge of the interactions between P. cubensis isolates and the […]

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Cucurbit Powdery Mildew Population Virulence Variation – a Complex View from a Global Perspective

Cucurbit powdery mildew (CPM) is mainly caused by two obligate ectoparasites, Golovinomyces orontii s.l. (Go) and Podosphaera xanthii (Px), that are highly variable in virulence. Various independent systems of CPM race determination and denomination have been used in recent decades. We recently developed new tools to enhance research of CPM virulence variation. Diversity models were […]

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