1. Department of Plant Science and Plant Pathology, Montana State University, 119 Plant BioScience Building, Bozeman, MT 59717-3150.
2. WestBred LLC, 8111 Timberline Drive, Bozeman, MT 59718-8184.
3. Corresponding author. Phone: 406-994-7877. Fax: 406-994-7600. E-mail: mgiroux@montana.edu