1. Biotechnology and Nuclear Technology Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, Sichuan 610061, China
2. Department of Plant Pathology, Washington State University, Pullman, WA 99164-6430, U.S.A.
3. Key Laboratory of Wheat Biology and Genetic Improvement in Southwestern China, Crop Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, Sichuan 610061, China
4. Wheat Health, Genetics, and Quality Research Unit, U.S. Department of Agriculture, Agricultural Research Service, Pullman, WA 99164-6430, U.S.A.