1. Longping Branch of Graduate School, Hunan University , No. 2 Lushan South Road, Yuelu District , Changsha , Hunan Province 410082 , People’s Republic of China
2. State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center , No. 736 Yuanda Road, Furong District , Changsha , Hunan Province 410125 , People’s Republic of China