1. Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan
2. Industrial Crops Research Institute, Kenya Agricultural and Livestock Research Organization, Mwea, Kenya
3. Faculty of Science, Maseno University, Kisumu, Kenya
4. Institute of Advanced Research, Nagoya University, Nagoya, Japan
5. International Center for Research and Education in Agriculture, Nagoya University, Nagoya, Japan
6. Faculty of Agronomy, Vietnam National University of Agriculture, Hanoi, Vietnam
7. Applied Social System Institute of Asia, Nagoya University, Nagoya, Japan