1. Food Research Program, Agriculture and Agri-Food Canada, Guelph, ON, Canada.
2. Corresponding author. Phone: 519-829-2400 ext. 3111. Fax: 519-829-2600. E-mail: abdelaale@em.agr.ca
3. Dept. of Plant Sciences, University of Saskatchewan, Saskatoon, SK, Canada.
4. Dept. of Crop Science, University of Guelph, ON, Canada.
5. Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, Guelph, ON, Canada.