1. National Institute of Agricultural Sciences, Jeonju-si, Jeollabuk-do 54874, Republic of Korea
2. Technology Cooperation Bureau, Rural Development Administration, Jeonju 54875, Republic of Korea
3. Crop Cultivation Department, Gyeongsangbuk-do Agricultural Research and Extension Services, 41404, Republic of Korea
4. Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration, Suwon 16429, Republic of Korea
5. Maize Research Institute, Gangwondo Agricultural Research and Extension Services, 24150, Repulic of Korea