Evaluation of Spring and Winter Wheat Reaction to Fusarium culmorum and Fusarium avenaceum

Winter {37), spring (8) wiieat accessions and additionaiiy, 7 double iiaploid (DH) iines were examined for susceptibility to Fusarium seedling blight after inocuiation witii F. culmorum and F, avenaceum. Winter accessions exiiibited iower susceptibility of about iWa to botii pathogens than spring cuitivars. Susceptibility of winter cultivars varied from low (22%) to high (97%). Evaluation of the root was found to be more reiiable than evaluation of coieoptiie necrosis. F. avenaceum infected mostiy root and, to a lesser extent, coieoptiie and ieaves, with about a three times iower disease score of coieoptiie against root. F. culmorum caused a i .5 higher disease score on root than on coieoptiie. Susceptibility of DH lines was different from susceptibility of parental forms. Reaction of individual accessions to F, culmorum and F. avenaceum was different