EVALUATION OF SPRING AND WINTER-WHEAT REACTION TO FUSARIUM-CULMORUM AND FUSARIUM-AVENACEUM

Winter (37), spring (8) wheat accessions and additionally, 7 double ha ploid (DH) lines were examined for susceptibility to Fusarium seedling blight after inoculation with F. culmorum and F. avenaceum. Winter ac cessions exhibited lower susceptibility of about 30% to both pathogens than spring cultivars. Susceptibility of winter cultivars varied from low (22%) to high (97%). Evaluation of the root was found to be more reliable than evaluation of coleoptile necrosis.F. avenaceum infected mostly root and, to a lesser extent, coleoptile and leaves, with about a three times lower disease score of coleoptile against root. F. culm orum caused a 1.5 higher disease score on root than on coleoptile. Sus ceptibility of DH lines was different from susceptibility of parental forms. Reaction of individual accessions to F. culmorum and F. avenace um was different.