powdery-mildew-resistant-watermelon

a large healthy plant on the left and a small chlorotic plant on right

Comparison of a powdery mildew resistant line to a susceptible line. Image provided by Amnon Levi, USDA-ARS

Comparison of a U.S. Vegetable Laboratory developed powdery mildew resistant germplasm (USVL531-MDR) on left compared to a highly susceptible line USVL677-PMS on the right. Image provided by Amnon Levi, USDA-ARS.