| Co-Investigator(Kenkyū-buntansha) |
INADA Ikuko Iwate University, Assistant Professor, 農学部, 助手 (90110650)
OKUBO Hiroshi Kyushu University, Associate Professor, 薬学部, 助教授 (80150506)
SHOYAMA Yukihiro Kyushu University, Associate Professor, 薬学部, 助教授 (70037604)
UEMOTO Shunpei Kyushu University, Professor Emeritus, 農学部, 名誉教授 (50038155)
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| Budget Amount *help |
¥23,200,000 (Direct Cost: ¥23,200,000)
Fiscal Year 1990: ¥8,000,000 (Direct Cost: ¥8,000,000)
Fiscal Year 1989: ¥8,200,000 (Direct Cost: ¥8,200,000)
Fiscal Year 1988: ¥7,000,000 (Direct Cost: ¥7,000,000)
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| Research Abstract |
Winged bean (Psophocarpus tetragonolobus) is an underutilized leguminous vegetable in south Asia. Further development of the plant as a high protein and oil crop suitable for the cultivation under warm temperature and high humidity has been long expected. This research was conducted in several south Asian countries in the years of 1989 and 1990 to survey and evaluate the germplasm of this plant to be used in our breeding program for further development of our varieties having the characters like dwarfness, photoinsensitivity for flowering and soft seed coat.
The expeditions were done in 6 major city areas and the neighbors in Malaysia, 6 cities and the neighbors in India and several rural areas in Sri Lanka during January and February, 1989, in 11 cities and neighboring rural areas, particularly in Yunnan and Kwansi Provinces in China including Hong Kongfrom December 1989 to January 1990 and in 7 areas of 4 islands in Indonesia and 2 areas in Philippines in October and November, 1990. U
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niversities, Institutions concerning mainly horticulture, markets and rural farmers were the major places of the visit for discussion and germplasm collection. More than 500 accessions were collected and all the germplasm collected was brought to Kyushu University and the evaluation were undertaken.
In Malaysia, winged bean cultivation was popular anywhere in this country but the farming scale was very small. In India, the existence of semi-frost tolerant varieties and a dwarf variety had been reported, but the plants of these kind of characters could not be found. Cultivation and consumption of the crop were not popular in this country when compared to those in Sri Lanka, where the cultivation could be seen very often. In China, minor tribes in Yunnan and Kwansi Provinces cultivate winged bean as their home garden crop, but the crop did not seem to be favored by Han, the majority of the Chinese. In Indonesia and Philippines, the crop was widely cultivated as in Sri Lanka, and many scientists still have the interest in further research. Dwarf, photoinsensitive and soft seen coat varieties developed by us in Kyushu University strongly attracted them and intensive discussion and seminars were much approved in many places.
Almost of all the accessions collected during these three-time research trips were photosensitive for flowering and viny. Among them, however, there were also the varieties having the specific characters, which had not been known yet, such as "white seed coat with large grain" which enables processing easier and increased yield and "long pods" which also has a potential for increased yield.
Joint research programs with some universities and institutes in these countries have also started. Within the next fiscal year, a publicaton on our activities and results on winged bean research will be planned. Less
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