1. Department of Agronomy, Faculty of Agriculture; Kasetsart University; Bangkok 10900 Thailand
2. Center for Advanced Studies in Agriculture and Food; KU Institute for Advanced Studies, Kasetsart University; Bangkok 10900 Thailand
3. Plant Tissue Laboratory, Kasetsart Agricultural and Agro-Industrial Product Improvement Institute; Kasetsart University; Bangkok 10900 Thailand
4. International Center of Tropical Agriculture (CIAT); Recta Cali-Palmira Km 17 Cali Colombia