1. Dep. of Crop and Soil Sciences Washington State Univ. Pullman WA 99164‐6420 USA
2. Dep. Plant and Environmental Sciences Clemson Univ. Clemson SC 29634‐0141 USA
3. Agriculture & Agri‐Food Canada Lethbridge Research and Development Centre Lethbridge, AB T1J 4B1 Canada
4. USDA–ARS Wheat Health, Genetics, and Quality Research Unit Pullman WA 99164‐6420 USA
5. Dep. of Plant Pathology Washington State Univ. Pullman WA 99164‐6430 USA
6. Dryland Research Station Washington State Univ. Lind WA 99341 USA