1. National Institute of Horticultural and Herbal Science, RDA, Wanju 55365, Republic of Korea
2. Graduate School on Plant Protection and Quarantine, Jeonbuk National University, Jeonju 54896, Republic of Korea
3. United States Department of Agriculture-Agricultural Research Service, United States National Arboretum, Floral and Nursery Plants Research Unit, Beltsville, MD 20705, U.S.A.
4. Department of Applied Biology, Chungnam National University, Daejeon 34134, Republic of Korea