1. State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A & F University, Yangling, Shaanxi 712100, China
2. Hunan State Key Laboratory of Crop Germplasm Innovation and Resource Utilization, Hunan Agricultural University, Changsha 410128, China
3. Agrobiotechnology Research Center, Beijing Academy of Agricultural and Forestry Sciences, Beijing 100097, China
4. Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
5. Department of Biology, University of British Columbia, Okanagan Campus, Kelowna, BC V1V 1V7, Canada