1. Department of Forest Science, Chungbuk National University, Cheongju, Republic of Korea
2. Forest Biodiversity Research Division, Korea National Arboretum, Pocheon, Republic of Korea
3. Department of Biology, Chungbuk National University, Cheongju, Republic of Korea
4. Department of Crop Science, Chungbuk National University, Cheongju, Republic of Korea
5. Department of Industrial Plant Science and Technology, Chungbuk National University, Cheongju, Republic of Korea