1. Department of Agronomy, Nanjing Agricultural University, Nanjing 210095, China
2. Anhui Science and Technology Achievement Transformation Promotion Center, Anhui Provincial Institute of Science and Technology, Hefei 230002, China
3. Maize Research Institute, Sichuan Agricultural University, Chengdu 611130, China
4. Department of Agronomy, Center for Plant Biology, Purdue University, 915 West State St., West Lafayette, IN 47907, USA
5. College of Biology Resources and Environmental Sciences, Jishou University, Jishou 416000, China