2017 Fiscal Year Final Research Report
Mechanism of rice bran application for weed control in rice farming system as a biopesticide
| Project/Area Number |
16K14839
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Crop production science
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| Research Institution | Kyushu University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
石橋 勇志 九州大学, 農学研究院, 准教授 (50611571)
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Keywords | 米ぬか / アリューロン細胞 / 雑草制御 / 活性酸素 / 抗酸化物質 |
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| Outline of Final Research Achievements |
Rice bran application on weed control in paddy field has been traditionally used as an organic farming system, however, many questions about the roles of rice bran on plants remain to be clarified. This study was conducted to determine the effect of rice bran application on weed control depending on rice bran concentration and its cultivars. It has been known that reactive oxygen species (ROS) promote seed germination while antioxidants scavenge the ROS to suppress the functions in several cereal crops. Here, biological activities of rice bran and antioxidant activities were focused on rice (Oryza sativa L.) cultivars having different colors of pericarp as well as that of barnyardgrass, a typical weed in paddy field. As a result, higher concentration of rice bran application showed the effective way on suppressing seed germination and growth of the weed. Especially, rice bran with a black pericarp containing anthocyanin played an important role as an ROS scavenger to control the weed.
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| Free Research Field |
作物生理学
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