Downy mildew of Cucurbits
structures are protruding from the stomata. Because there are more stomata on the underside of the leaf, this is where most fluffy symptoms are found. How [...] From these oospores or surviving mycelium sporangia are formed, structures in which zoospores are produced. However, in downy mildews, sporangia often [...] They cause lesions on the upper leaf surface, bordered by the veins, which are first yellow and then turn brown. On the underside of the leave fluffy growth