Powdery Mildew – Melon Powdery Mildew Database at UC Riverside

Cucurbit powdery mildew is a chronic and major disease problem of cantaloupe and honeydew production worldwide. Early infection can kill plants or drastically reduce fruit yield; late infection reduces fruit quality. The cucurbit powdery mildew responsible for powdery mildew disease in the USA is Podosphaera xanthii. Two races of P. xanthii were known in California until 2003 when a […]

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USDA ARS

… the watermelon has been grown in the United States for more than 300 years. But when ARS geneticist Amnon Levi, who today leads the watermelon program at the U.S. Vegetable Laboratory, did a DNA analysis of heirloom and current varieties, he found that all of our watermelons are just about genetically identical, making the […]

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