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This article in CS

  1. Vol. 50 No. 1, p. 134-142
     
    Received: Mar 11, 2009
    Published: Jan, 2010


    * Corresponding author(s): yanw@agr.gc.ca
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doi:10.2135/cropsci2009.03.0129

Response of Oat Genotypes to Fusarium Head Blight in Eastern Canada

  1. Weikai Yan *a,
  2. Judith Fregeau-Reida,
  3. Sylvie Riouxb,
  4. Denis Pageauc,
  5. Allen Xuea,
  6. Richard Martind,
  7. George Fedakb,
  8. Brad de Haana,
  9. Julie Lajeunessec and
  10. Marc Savarda
  1. a Eastern Cereal and Oilseed Research Center, Agriculture and Agri-Food Canada, 960 Carling Ave., Neatby Bldg., Ottawa, ON, Canada, K1A 0C6
    b Centre de recherche sur les grains, 2700 Einstein, Québec City, QC, Canada, G1P 3W8
    c Soils and Crops Research and Development Centre, Agriculture and Agri-Food Canada, 1468 St-Cyrille St., Normandin, QC, Canada, G8M 4K3
    d Crops & Livestock Research Centre, Agriculture and Agri-Food Canada, 440 University Ave., Charlottetown, PE, Canada, C1A 4N6

Abstract

Recent investigations in northern Europe and western Canada suggested that mycotoxins caused by Fusarium head blight (FHB) could be a potential problem for oat (Avena sativa L.) production and oat food safety. Here we report studies conducted in eastern Canada to address this issue. In one study, oat genotypes of diverse origin were evaluated for grain and groat deoxynivalenol (DON) contamination owing to artificial FHB inoculation at Ottawa, ON, in 2006 and 2007. In a separate study, oat genotypes tested in the yearly Quebec Oat Registration and Recommendation Trials were evaluated for DON contamination due to artificial inoculation in Quebec from 2003 to 2008. Deoxynivalenol was detected in all tested genotypes, and up to 43 μg g−1 of DON was observed in the oat grain. Up to 86% of the DON in the oat grain was removed by dehulling. However, some genotypes still retained up to 9 μg g−1 of DON in the groat. Genotype ranking in DON content was relatively consistent across years, planting dates, and experiments, and genotypes with consistently low and high DON levels were identified. It was concluded that FHB is a potential problem for oat production and oat food safety under high FHB pressures; however, the severity of this problem needs to be further assessed by extensive monitoring of the DON level under natural conditions. The most susceptible genotypes identified in this study can be useful for this purpose.

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