1. Department of Biology, Basic Medical College, Hebei North University, Zhangjiakou, PR China;
2. Department of Plant Protection, College of Agriculture and Forestry, Hebei North University, Zhangjiakou, PR China;
3. Department of Millet Research Center, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, PR China;
4. Department of Millet Research Center, Zhangjiakou Academy of Agricultural Sciences, Zhangjiakou, PR China;
5. Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, PR China