Fusarium Head Blight and Deoxynivalenol Accumulation of Barley in Eastern Canada: Cultivar Response and Correlation Analysis

Author:

Choo T. M.1,Martin R. A.2,Ho K. M.1,Shen Q.3,Fedak G.1,Savard M.1,Voldeng H.1,Falk D. E.4,Etienne M.5,Sparry E.6

Affiliation:

1. Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, Ottawa, Ontario, Canada K1A 0C6

2. Crops and Livestock Research Centre, Agriculture and Agri-Food Canada, Charlottetown, PEI, Canada C1A 4N6

3. Zhejiang Academy of Agricultural Sciences, 48 Shiqiao Road, Hangzhou, China 310021

4. Department of Plant Agriculture, University of Guelph, Guelph, Ontario, Canada N1G 2W1

5. W. G. Thompson and Sons Ltd., Nairn Research Lab., R. R. #1, Ailsa Craig, Ontario, Canada N0M 1A0

6. C & M Seeds, R. R. #3, Palmerston, Ontario, Canada N0G 2P0

Abstract

Fusarium head blight of barley (Hordeum vulgare) is a devastating disease in many countries. We undertook a study to identify barley cultivars, if any, that are resistant to Fusarium head blight and deoxynivalenol (DON) accumulation and to determine if DON concentration is correlated with other plant traits in Eastern Canada and China. Barley cultivars were grown in the field under artificial inoculation conditions at two locations (Charlottetown and Ottawa) in Canada during two summers and at Hangzhou in China during two winters. Seed samples were collected for DON analysis from the barley performance trial at five locations in Ontario. None of the 64 barley cultivars were immune to Fusarium head blight infection. Two-row cultivars, however, were significantly more resistant to Fusarium head blight infection and DON accumulation than six-row cultivars. Three cultivars (Island, AC Alberte, and Chevron) were found to be most resistant, as they were consistently low in Fusarium head blight incidence and DON concentration in both Eastern Canada and China. In six-row barley, DON concentration was correlated positively with Fusarium head blight incidence at both Charlottetown and Ottawa, and it was negatively correlated with plant height at Ottawa. DON concentration and heading date were not consistently correlated. Barley yellow dwarf and powdery mildew appeared to have very little effect on Fusarium head blight infection. Susceptibility to DON accumulation did not result in low yield under natural infection conditions in Ontario. Cultivar × location interactions for DON concentration, Fusarium head blight incidence, and heading date were significant.

Publisher

Scientific Societies

Subject

Plant Science,Agronomy and Crop Science

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