1. International Center for Tropical Agriculture (CIAT); Apartado Aereo 6713 Palmira Colombia 763537
2. National Agriculture and Food Research Organization (NARO), Institute of Livestock and Grassland Science; Nasushiobara Tochigi 392-2793 Japan
3. Japan International Research Center for Agricultural Sciences (JIRCAS); 1-1 Ohwashi Tsukuba Ibaraki 305-8686 Japan
4. Japan International Research Center for Agricultural Sciences (JIRCAS), Tropical Agriculture Research Front; 1091-1 Maezato-Kawarabaru, Ishigaki Okinawa 907-0002 Japan
5. Univ. of Arkansas; Dep. of Horticulture; 306 Plant Sciences Bldg. Fayetteville AR 72701