1. Agronomy College, Gansu Agricultural University, Lanzhou 730070, China
2. Gansu Provincial Key Laboratory of Aridland Crop Science, Lanzhou 730070, China
3. Gansu Key Laboratory of Crop Genetic & Germplasm Enhancement, Lanzhou 730070, China
4. Pratacultural College, Gansu Agricultural University, Lanzhou 730070, China
5. Gansu Academy of Agricultural Sciences, Lanzhou 730070, China
6. College of Life Science and Technology, Gansu Agricultural University, Lanzhou 730070, China