1. Lacombe Research and Development Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, AB T4L 1W1, Canada.
2. Canadian Grain Commission, 1404–303 Main Street, Winnipeg, MB R3C 3G8, Canada.
3. Brandon Research and Development Centre, Agriculture and Agri-Food Canada, Box 1000A, Brandon, MB R7A 5Y3, Canada.
4. Swift Current Research and Development Centre, Agriculture and Agri-Food Canada, Box 1030, Swift Current, SK S9H 3X2, Canada.