Abstract
Tamburic-Ilincic, L., Wragg, A. and Schaafsma, A. 2015. Mycotoxin accumulation and Fusarium graminearum chemotype diversity in winter wheat grown in southwestern Ontario. Can. J. Plant Sci. 95: 931-938. Fusarium head blight caused by Fusarium graminearum is a serious disease of wheat (Triticum aestivum L.). Deoxynivalenol (DON) is the mycotoxin most commonly detected in contaminated wheat grain in Ontario. A chemotype shift from 15-acetyldeoxynivalenol (15-ADON) to 3-acetyldeoxynivalenol (3-ADON) has been reported in some parts of North America. The objectives of this study were to investigate the mycotoxins accumulation and Fusarium graminearum chemotype diversity in different winter wheat cultivars grown in southwestern (SW) Ontario. Twenty winter wheat grain samples from SW Ontario were tested for DON concentrations in 2008, 24 in each of 2009 and 2010, 42 in 2011 and 36 in 2013 growing seasons. DON levels in grain ranged from none detected to 33 parts per million (ppm). The highest averaged levels of ...
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