1. Food Research Program, Agriculture and Agri-Food Canada, Guelph, ON, Canada.
2. Corresponding author. E-mail: abdelaale@em.agr.ca Phone: 519-829-2400 ext. 3111. Fax: 519-829-2600.
3. Department of Plant Sciences, University of Saskatchewan, Saskatoon, SK, Canada.
4. Plant Biotechnology Institute, NRC, Saskatoon, SK, Canada.
5. Canadian Grain Commission, Winnipeg, MB, Canada.