1. Triticeae Research Institute Sichuan Agricultural University Chengdu611130China
2. CAS Center for Excellence in Molecular Plant Science Chinese Academy of Sciences Shanghai210027China
3. Department of Plant Biology University of California Davis, CA95616USA
4. Department of Plant Science University of California Davis, CA 95616USA
5. State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China Sichuan Agricultural University Chengdu611130China