2009 Fiscal Year Final Research Report
Effects of elevated atmospheric CO2 concentration on the competition between rice and paddy-field weeds
| Project/Area Number |
19580019
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Crop science/Weed science
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| Research Institution | National Institute for Agro-Environmental Sciences |
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Principal Investigator |
SAKAI Hidemitsu National Institute for Agro-Environmental Sciences, 大気環境研究領域, 主任研究員 (00354051)
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| Co-Investigator(Renkei-kenkyūsha) |
CHENG Weiguo 独立行政法人農業環境技術研究所, 大気環境研究領域, 農環研特別研究員 (80450279)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 気候変動 / 水稲 / 収量 / 雑草 / 競合 / CO_2 / 水田 |
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| Research Abstract |
Monochoria vaginalis and Scirpus juncoides showed higher growth responses to elevated CO_2 than rice. Echinochloa oryzoides responded to elevated CO_2 only under higher temperature condition, showing the interaction between CO_2 concentration and temperature. Elevated CO_2 stimulated the competition between rice and paddy-field weeds, which decreased rice yields under the future CO_2 concentration.
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