Canadian Journal of Plant Pathology (2019) 41, 392-402

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Allen G. Xue, Yuanhong Chen, Keith Seifert, Wei Guo, Barbara A. Blackwell, Linda J. Harris and David P. Overy (2019)
Prevalence of Fusarium species causing head blight of spring wheat, barley and oat in Ontario during 2001–2017
Canadian Journal of Plant Pathology 41 (3), 392-402
Abstract: Fusarium spp. associated with fusarium head blight (FHB) on cereals in Ontario was monitored in this study. Nine species were recovered from 24 300 putatively infected kernels collected from 486 affected spring wheat fields from 2001 to 2017, 11 species from 13 250 kernels from 265 barley fields from 2005 to 2017, and nine species from 8800 kernels from 176 oat fields from 2008 to 2017. Fusarium avenaceum, F. equiseti, F. graminearum, F. poae and F. sporotrichioides were the most commonly isolated species, occurring in 23–66% of the infected fields and 1.3–27.0% of the infected kernels. In spring wheat, F. graminearum was predominant, occurring in 88% of fields and in 60.4% of kernels, and represented 90% of the pathogen population. In barley, F. poae and F. graminearum were equally dominant, occurring in 77% and 64% of fields, 17.6% and 17.0% of kernels, and represented 42% and 40% of the pathogen population, respectively. In oat, F. poae was predominant, occurring in 93% of fields and 23.5% of kernels, and represented 68% of the pathogen population. Growth seasons characterized as an FHB epidemic occurred in 11 of 17 years surveyed in spring wheat, 3 of 13 years surveyed in barley, and no epidemic years were observed over the 10-year period in oat. There were no significant differences in frequency of isolation of the Fusarium species, except for F. graminearum which increased by 60% in wheat and by 210% in barley in the FHB epidemic years compared with the non-epidemic years, suggesting that F. graminearum was responsible for the FHB epidemics in Ontario.
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Link to article at publishers website
Database assignments for author(s): Allen G. Xue, Keith A. Seifert, Linda J. Harris

Research topic(s) for pests/diseases/weeds:

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Fusarium poae Barley (Hordeum vulgare) Canada (east)
Fusarium avenaceum Canada (east)
Fusarium graminearum Barley (Hordeum vulgare) Canada (east)
Fusarium graminearum Wheat (Triticum) Canada (east)
Fusarium equiseti Canada (east)
Fusarium sporotrichioides Canada (east)