Pathway not proven. Oospores of Peronospora.viciae are also formed on and in the seed coat, but successful seed transmission has not been demonstrated. One reference (PEROVI-5) did not find any seed-borne infection in 7 seed samples tested.
Visual examination
Grow out, Bioassay
PEROVI-6,PEROVI-7
Seed treatments are often suggested for protection against Peronospora viciae that may be in field debris.Â
A quality systems approach in production of the seeds with crop inspections, careful selection of healthy fruits and seed conditioning/cleaning should be used to ensure seed quality and reduce unwanted seed contaminants.
Mence MJ, Pegg GF, 1971. The biology of Peronospora viciae on pea: factors affecting the susceptibility of plants to local infection and systemic colonization. Annals of Applied Biology, 67:297-308.
Richard E. Falloona, George B. Follasb, Ruth C. Butlera, David S. Gouldena. 2000 Resistance in Peronospora viciae to phenylamide fungicides: reduced efficacy of seed treatments of pea (Pisum sativum) and assessment of alternatives, Crop Protection 19:313–325
Lens culinaris
lentil
No
No references found indicating seed is a pathway. Downy mildew of lentil is caused by Peronospora viciae f.spp. faba.