1. Apple Research Institute, National Institute of Horticultural & Herbal Science, Rural Development Administration, Gunwi 39000, Korea
2. Floriculture Research Division, National Institute of Horticultural and Herbal Science, RDA, Wanju 55365, Korea
3. Namhae Sub-Station, National Institute of Horticultural and Herbal Science, RDA, Namhae 52430, Korea