A survey of Fusarium species and ADON genotype on Canadian wheat grain

Abstract

Based on single-seed analyses, we demonstrate the relationships between <i>Fusarium</i> species and trichothecene chemotype with sample year, sample location, wheat species (hexaploid and durum wheat), severity of <i>Fusarium</i> damaged kernels (FDK), and accumulation of DON. Results indicate that various <i>Fusarium</i> species are present across wheat growing regions in Canada; however, <i>F. graminearum</i> is the most common species and 3-ADON the most common genotype. We observed an increase in the occurrence of the 3-ADON genotype, particularly in the western Prairie regions. Our data provides important information on special-temporal trends in <i>Fusarium</i> species and chemotypes that can aid with the implementation of integrated disease management strategies to control the detrimental effects of this devastating disease.