| Project/Area Number |
23380014
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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 |
Crop science/Weed science
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| Research Institution | Hokkaido Research Organization |
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Principal Investigator |
KOUSAKA Fumiko 地方独立行政法人北海道立総合研究機構, その他部局等, 研究員 (30462394)
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| Co-Investigator(Kenkyū-buntansha) |
SHIMAMURA Satoshi 独立行政法人農業・食品産業技術総合研究機構 (00391441)
MAEKAWA Tomiya 独立行政法人農業・食品産業技術総合研究機構 (40409090)
HIRAGA Susumu 独立行政法人農業・食品産業技術総合研究機構 (30332472)
NAKAMURA Takuji 独立行政法人農業・食品産業技術総合研究機構 (60399425)
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| Co-Investigator(Renkei-kenkyūsha) |
SHIMADA Shinji 独立行政法人農業・食品産業技術総合研究機構 (30355309)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥18,330,000 (Direct Cost: ¥14,100,000、Indirect Cost: ¥4,230,000)
Fiscal Year 2013: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2012: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2011: ¥9,100,000 (Direct Cost: ¥7,000,000、Indirect Cost: ¥2,100,000)
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| Keywords | ダイズ / 湿害 / 耐湿性 / 通気組織 / 品種間差 |
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| Research Abstract |
The soybean variety "Shoku-kei32(S32)" was highly tolerant to soil flooding.The objective is to observe the response of S32 to flooding, especially its O2 suppliability to roots, compared with susceptible variety "Toyoharuka (T)". These varieties were treated with flooding in the field after anthesis. After treatment for 3 days, the bleeding xylem sap ratio of S32 was slightly declined, whereas the value of T declined sharply. Secondary aerenchyma was scarcely observed in flooded tissue sections, both from S32 and T. And then, shoot of S32 were exposed to oxygen-18 in flooded pot for 1 h, to investigate the possibility that there are shoot to root O2 supply systems for respiration. Although enrichment of 18O-labelled water wasn't shown in roots, significant enrichment was shown in shoots, suggesting that there is no prominent O2 supply from shoots to roots, via neither aerenchymatous nor non-aerenchymatous system.
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