1. Key Laboratory of Plant Molecular Physiology; Institute of Botany; The Chinese Academy of Sciences; Beijing 100093 China
2. National Key Facility for Crop Gene Resources and Genetic Improvement; Institute of Crop Science; Chinese Academy of Agricultural Sciences; Beijing 100081 China
3. Department of Ornamental Horticulture; China Agricultural University; Beijing 100193 China
4. State Key Laboratory of Agricultural Microbiology; College of Plant Science and Technology; Huazhong Agricultural University; Wuhan 430070 China