| Project/Area Number |
11695070
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
生物資源科学
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| Research Institution | THE UNIVERSITY OF TOKYO |
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Principal Investigator |
SUGIYAMA Nobuo Graduate School of Agricultural and Life Sciences, THE UNIVERSITY OF TOKYO, Professor, 大学院・農学生命科学研究科, 教授 (30012040)
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| Co-Investigator(Kenkyū-buntansha) |
TAKANO Tetsuo Asian Natural Environmental Sciences Center, THE UNIVERSITY OF TOKYO, Associate Profressor, アジア生物資源環境研究センター, 助教授 (30183057)
YAMAKAWA Takashi Graduate School of Agricultural and Life Sciences, THE UNIVERSITY OF TOKYO, Associate Professor, 大学院・農学生命科学研究科, 助教授 (20134520)
IWAMOTO Noriaki Graduate School of Agricultural and Life Sciences, THE UNIVERSITY OF TOKYO, Professor, 大学院・農学生命科学研究科, 教授 (40117479)
NEMOTO Keisuke Asian Natural Environmental Sciences Center, THE UNIVERSITY OF TOKYO, Associate Professor, アジア生物資源環境研究センター, 助教授 (40211461)
藤田 夏樹 東京大学, 大学院・農学生命科学研究科, 教授 (30190044)
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| Project Period (FY) |
1999 – 2001
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| Project Status |
Completed (Fiscal Year 2001)
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| Budget Amount *help |
¥6,500,000 (Direct Cost: ¥6,500,000)
Fiscal Year 2001: ¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 2000: ¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1999: ¥2,300,000 (Direct Cost: ¥2,300,000)
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| Keywords | Genetic diversity / Indonesia / Industrialization / ゾウコンニャク / 主成分分析 / キャッサバ / 作付体系 / 商品経済 / 作付指数 |
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| Research Abstract |
Urbanization and industrialization have changed Indonesian agriculture, in such a way that farmers have stopped cultivating cassava and Amorphophallus species which were previously used as substitutes for rice. Therefore, genetic resources are disappearing from the traditional cropping systems in Indonesia. Traditional cropping systems such as Pekarangan and Tunpansari have been studied both sociologically and economically. However, genetic diversity of cultivated plants in these traditional cropping systems have yet to be studied. The Indonesian government has decided to conserve these crops and intend to use them for industrial purposes. In this study, we investigated the changes in cassava varieties which farmers have grown, and found that many local varieties which are suitable for food but low yield have lost after rice production increased due to the green revolution. Secondly, we clarified the genetic diversity of Amorphophallus species using morphological characters. Amorphophallus paeoniifolius (elephant foot yams) are grown as ground-layer crops in home gardens because they are tolerant to low light intensities and low fertility. Elephant foot yams play a minor role as food crops at the present time. However, they have potential as an industrial crop because they can be cultivated under the canopy of plantation crops. Principal component analysis showed that accessions were divided into five groups, A to E. Relationships between the growth habitats and groups classified by principal component analysis show that groups could be divided into two ecotypes, which are adapted to lowlands (A, B and E) and to uplands c. Sucrose and starch concentrations in corms varied largely among accessions, but iseems unlikely that carbohydrate concentrations are related to the classification based on morphological characters.
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