Correlation between Fusarium graminearum and Deoxynivalenol during the 2012/13 Wheat Fusarium Head Blight Outbreak in Argentina

JUAN M. PALAZZINI; FUMERO, M.V.; N. YERKOVICH; BARROS, G.G.; MARTHA CUNIBERTI; CHULZE, S.N.

CEREAL RESEARCH COMMUNICATIONS

AKADEMIAI KIADO RT

Lugar: Budapest; Año: 2015

0133-3720

Fusarium graminearum (Schwabe) is reported as the main causal agent of Fusarium headblight in Argentina. The disease causes great losses in humid and semi-humid regions of theworld, reducing grain yield and quality. During 2012/13 harvest season, a severe epidemicoccurred in Argentina. The aims of this work were to determine the F. graminearum incidenceand deoxynivalenol accumulation in wheat grain and flour samples obtained from twoof the main wheat growing regions from Argentina. Levels of the pathogen and deoxynivalenolcontent were correlated in heads, grains and flour. Out of 69 wheat grain samples, 55(79.7%) showed deoxynivalenol levels between 0.4 and 8.5 μg/kg. Fusarium graminearumwas the main species isolated, the isolation frequency ranged from 30 to 52% of the totalgrains analyzed. Correlations were observed between deoxynivalenol content, % of F.graminearum infection, presence of the pathogen in heads, grain and flour.