1. Graduate School of Agriculture; Kyoto University; Kitashirakawa Oiwake-cho, Sakyo-ku Kyoto 606-8502 Japan
2. Faculty of Agriculture; Padjadjaran University; Jalan Raya Bandung-Sumedang km 21 Jatinangor 45363 Indonesia
3. The Institute for Genomic Biology; University of Illinois; Urbana-Champaign, 1206 west Gregory Drive Urbana IL 61801 USA