1. United Graduate School of Agricultural Science; Kagoshima University; 1-21-24 Korimoto Kagoshima 890-0065 Japan
2. Department of Bioscience and Biotechnology, Faculty of Agriculture; University of the Ryukyus; 1 Senbaru, Nishihara Okinawa 903-0213 Japan
3. Institute of OISHISA Science; Next-Kagawa101, 2217-44 Hayashimachi Takamatsu Kagawa 761-0301 Japan
4. Department of Biochemical Science and Technology; Faculty of Agriculture, Kagoshima University; 1-21-24 Korimoto Kagoshima 890-0065 Japan
5. Regional Agricultural System Section; Okinawa Prefectural Agricultural Research Center; 820 Makabe, Itoman Okinawa 901-0336 Japan