1 State Key Laboratory of Hybrid Rice, Key Laboratory for Research and Utilization of Heterosis in Indica Rice of the Ministry of Agriculture, Engineering Research Center for Plant Biotechology and Germplasm Utilization of the Ministry of Education, College of Life Science, Wuhan University, Wuhan 430072, China.
2 National Key Laboratory of Genetic Crop Improvement, Huazhong Agriculture University, Wuhan 430070, China.
3 National Key Laboratory of Genetic Crop Improvement, Huazhong Agriculture University, Wuhan 430070, China. Electronic address: jie.luo@mail.hzau.edu.cn.