| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
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| Outline of Final Research Achievements |
As a hypothesis, the nodules biomass in a field was considered as a main factor for causing problems in continuous cropping of leguminous plants. After continuous cropping of three different nodulation phenotypes of soybeans (non-nodule, super-nodule, and wild type soybeans) on the same fields for three years, kidney beans were cultivated on those field as a succeeding crop. The community analysis of rhizosphere soils of these kidney beans revealed that the populations of nematode had no correlation to the nodule biomass in a preceding crop. However, the community structure of non-nodulated soybean mutant was shown to be similar to that of kidney beans which had been continuously cropping for four years. In addition, the community analysis clarified that the relative abundance of Mortierella elongate was increased in the rhizosphere of kidney beans as responding to the nodule biomass of preceding crops.
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