*Shuya Yoshioka1, Tomohiro Suzuki2, Mitsuho Katoh3, Kaori Tsurui-Sato2,3, Kazuki Tsuji2,3
(1. The Graduate School of Agriculture, University of the Ryukyus, Nishihara, Okinawa, 903-0213 (Japan), 2. The United Graduate School of Agricultural Sciences, Kagoshima University, Korimoto 1-21-24, Kagoshima, 890-8580 (Japan), 3. Faculty of Agriculture, University of the Ryukyus, Nishihara, Okinawa, 903-0213 (Japan))