Through what pathways is wheat downy mildew transmitted?
How is wheat downy mildew transmitted? Wheat downy mildew is a fungal disease. The pathogen overwinters as oospores in the diseased residue of the host. When conditions are suitable, the oospores germinate and produce sporangia. The oospores and sporangia are spread by flowing water, germinate to produce zoospores, invade through the coleoptile and develop into hyphae, and the hyphae penetrate deep into the growing point of the young host...
How is wheat downy mildew transmitted? Wheat downy mildew is a fungal disease. The pathogen overwinters as oospores in the diseased residue of the host. When conditions are suitable, the oospores germinate and produce sporangia. The oospores and sporangia are spread by flowing water, germinate to produce zoospores, invade through the coleoptile and develop into hyphae, and the hyphae penetrate deep into the growing point of the young host plant, causing systemic infection. The autumn seedling stage of wheat is the main infection period for the pathogen; waterlogging in the field or improper irrigation both favor the development of the disease.