Science and Society in Japan
Tsukuba Science City, famous in Japan for its isolation from society, does have a lot to offer in the way of research opportunities... See Websites of Educational and Research Institutions in Tsukuba
Kansai Science City is hardly known, but is gradually emerging as a joint project between different prefectures in the Kansai region (around Osaka). An array of sites with overlapping information are offered by the Kansai Science City Construction Promotion Office here, and here, Kyoto Prefectural Government here and here, Global Development Research Center, Kansai Economic Federation, and the Puspitek Science Parks of Asia. page.
Miscellaneous research links in Japan
Japanese Society of Root and Tuber Crops appears to offer only Japanese on its website, but English language search terms will bring up many pages of information about root crops in Japan, in English.

