1. Academy of Agriculture and Forestry Sciences, Qinghai University, Xining 810016, China
2. Key Laboratory of Qinghai Province Tibetan Plateau Agric-Product Processing, Qinghai University, Xining 810016, China
3. Laboratory for Research and Utilization of Qinghai Tibet Plateau Germplasm Resources, Qinghai University, Xining 810016, China
4. College of Food Science and Engineering, Northwest A & F University, Yangling 712100, China