1. Maize Engineering and Technology Research Center of Hunan Province, College of Agronomy Hunan Agricultural University Changsha 410128 China
2. State Key Laboratory of Maize Bio‐breeding, National Maize Improvement Center, Frontiers Science Center for Molecular Design Breeding China Agricultural University Beijing 100193 China
3. Tianjin Key Laboratory of Intelligent Breeding of Major Crops, Fresh Corn Research Center of BTH, College of Agronomy & Resources and Environment Tianjin Agricultural University Tianjin 300384 China