1. College of Grassland Agriculture, Northwest A&F University, Yangling 712100, Shaanxi Province, China
2. Jiuquan Daye Seed Industry Co. Ltd., Jiefang Road 325#, Suzhouqu, Jiuquan, 735000, Gansu Province, China
3. College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi Province, China
4. Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing, 100094, China
5. Institute of Grassland Research, Chinese Academy of Agricultural Science, Hohhot, 010010, Inner Mongolia, China
6. College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot, 010010, Inner Mongolia, China
7. Institute of Field and Vegetable Crops, Forage Crops Department, Maksima Gorkog 30, 21000 Novi Sad, Serbia