1. Kyushu Okinawa Agricultural Research Centre; Makabe 820 Itoman Okinawa 901-0336 Japan
2. Okinawa Prefectural Agriculture Research Centre; Nago 4605-3, Nago Okinawa 905-0012 Japan
3. Kyushu Okinawa Agricultural Research Centre; Suya 2421, Koshi Kumamoto 861-1192 Japan