1. State Key Laboratory of Maize Bio‐breeding, Key Laboratory of Genome Editing Research and Application, Ministry of Agriculture and Rural Affairs, Department of Plant Genetics and Breeding, National Maize Improvement Center, College of Agronomy and Biotechnology China Agricultural University Beijing 100193 China
2. National Agricultural Technology Extension & Service Center Beijing 100125 China
3. Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding Beijing Academy of Agriculture and Forestry Sciences Beijing 100097 China