1. College of Life Sciences, Inner Mongolia Key Laboratory of Plant Stress Physiology and Molecular Biology, Inner Mongolia Agricultural University , Hohhot 010018 , P.R. China
2. Ordos Forestry and Grassland Development Center , Ordos 017010 , P.R. China
3. Inner Mongolia Enterprise Key Laboratory of Tree Breeding, Mengshu Ecological Construction Group Co., Ltd. , Hohhot 011517 , P.R. China
4. Inner Mongolia Engineering Research Center for Plant Gene Resources Mining and Molecular Breeding, Inner Mongolia Agricultural University , Hohhot 010021 , P.R. China