1. Institute of Crop Science, National Wheat Improvement Centre/The National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences (CAAS), No. 12 Zhongguancun South Street, Beijing 100081, China.
2. College of Plant Science and Technology, Huazhong Agricultural University, No.1, Shizishan, Wuhan 430070, Hubei Province, China.
3. CIMMYT China Beijing Office, C/O CAAS, Beijing 100081, China.
4. Corresponding author. Phone: +86-10-62170333. Fax: +86-10-68918547. E-mail: zhhe@public3.bta.net.cn or zhangy@caas.net.cn
5. Crop Research Institute, Shandong Academy of Agricultural Science, Jinan 250100, Shandong Province, China.