| Project/Area Number |
21380158
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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 |
Agricultural environmental engineering
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| Research Institution | National Institute for Agro-Environmental Sciences |
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Principal Investigator |
YOSHIMOTO Mayumi 独立行政法人農業環境技術研究所, 大気環境研究領域, 主任研究員 (40343826)
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| Co-Investigator(Kenkyū-buntansha) |
OKADA Masumi 岩手大学, 農学部, 教授 (10355274)
FUKUOKA Minehiko 独立行政法人農業環境技術研究所, 大気環境研究領域, 主任研究員 (40435590)
KANEMATSU Seiji 独立行政法人農業・食品産業技術総合研究機構・東北農業研究センター, 生産環境研究領域, 上席研究員 (80343961)
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| Co-Investigator(Renkei-kenkyūsha) |
KOIZUMI Shinzo 独立行政法人農業・食品産業技術総合研究機構・東北農業研究センター, 寒冷地温暖化研究チーム, 上席研究員 (90355305)
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| Project Period (FY) |
2009 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥18,590,000 (Direct Cost: ¥14,300,000、Indirect Cost: ¥4,290,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2011: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2010: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2009: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
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| Keywords | ケイ酸 / イネ / 開放系高CO2 実験 / 穂温 / いもち病 / 温暖化影響 / 高温障害 / 蒸散 / 開放系高CO2実験 / 温暖化 / 高温不稔 |
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| Research Abstract |
Re-analyzing of silica content of rice sampled in the past FACE (Free-Air CO2 Enrichment) experiment showed that silica content decreased by high CO2 in sheath, culm and leaf blade. It was inferred that silica distribution to each part of plants did not correspond to the silica amount expected from the increase of dry matter weight by high CO2, resulting in the decrease of silica content. Silica content in panicle surface also decreased by high CO2, which might make plants susceptible against the biotic stress. As the panicle transpiration decreased by high CO2 regardless of silica content decrease, panicle temperature increase by high CO2, which should raise the risk of heat stress
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