| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2011: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Research Abstract |
Cultivated sweet potato (Ipomoea batatas) species/cultivars carry cross-incompatibility mechanism; therefore efficient cross breeding is not achieved. This cross-incompatibility of I.batatas is based on the self-incompatibility system of wild type diploid species (I.trifida) which related to cultivated sweet potato, so the research on self-incompatibility of I.trifida, will directly reflect on the breakdown of cross-incompatibility of I.batatas. In this research, we determine the male-part S-gene of I.trifida by bioassay, in which applying male-S-gene product on the surface of stigma upon pollination, and we identified female-S-candidate genes. Function of these S-gene and S-candidate genes were verified by homology search against DNA and protein databases on the net. However, Breakdown the cross- and self-incompatibility of sweet potato is not achieved by GM and non-GM ways.
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