Department of Crop and Soil Sciences, Cornell University, Ithaca, NY, USA 14853 (e-mail: [email protected]); Department of Biology, Trinity Western University, Langley, British Columbia, Canada V2Y 1Y1; Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, Wm. Saunders Building #49, Ottawa, Ontario, Canada K1A 0C6; and Department of Crop and Soil Sciences, Oregon State Un...
