OCCURRENCE AND DISTRIBUTION OF FUSARIUM SPP ASSOCIATED WITH DURUM WHEAT SEED FROM ARGENTINA
G.A. Lori, M.N. Sisterna
In Argentina Fusarium head blight (FHB) caused primarily by Fusarium graminearum is an important disease of bread and durum wheat. The natural occurrence of F. graminearum and other Fusarium spp. in durum wheat seed harvested in the main cropping area was determined during the 1995-97 period. From varietal trials carried out in five locations, 192 seed samples of 7 cultivars and 17 lines were analyzed following the blotter test (ISTA rules). Seven Fusarium species were recovered, but F. graminearum was the only one isolated from all the samples. Differences in the cultivar performance among years and locations showed that the pressure of environmental conditions during anthesis would favours the disease expression.