ABSTRACT
Masanobu Mino is affiliated with the Graduate School of Agriculture, Kyoto Prefectural University, 1-5 Hangi-cho, Shimogamo, Sakyo-ku, 606-8255 Kyoto, Japan (E-mail: mino@kpu.ac.jp).
Mariko Oka is affiliated with the Faculty of Agriculture, Tottori University, 4-101 Koyama-cho Minami, 680-8533 Tottori, Japan.
