1. National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI), Institute of Crop Science, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China
2. Institute of Millet Crops, Hebei Academy of Agricultural and Forestry Science, Shijiazhuang 050031, China
3. Department of Biology and Chemistry, Hebei Teachers’ College for Nationality, Chengde 067000, China
4. College of Life Sciences, Hebei Normal University, Shijiazhuang 050012, China, and