| Project/Area Number |
11695068
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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 |
植物保護
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| Research Institution | University of Tsukuba |
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Principal Investigator |
USUI Kenji University of Tsukuba, Inst.of Applied Biochem., Assoc. Prof., 応用生物化学系, 教授 (80087585)
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| Co-Investigator(Kenkyū-buntansha) |
SHIM Iesung University of Tsukuba, Inst.of Applied Biochem., Assist. Prof., 応用生物化学系, 講師 (30272157)
MATSUMOTO Hiroshi University of Tsukuba, Inst.of Applied Biochem., Prof., 応用生物化学系, 教授 (10199888)
KOBAYASHI Katsuichiro University of Tsukuba, Inst.of Applied Biochem., Assoc. Prof., 応用生物化学系, 助教授 (40087606)
石塚 晧造 筑波大学, 名誉教授 (60101317)
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| Project Period (FY) |
1999 – 2001
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| Project Status |
Completed (Fiscal Year 2001)
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| Budget Amount *help |
¥6,600,000 (Direct Cost: ¥6,600,000)
Fiscal Year 2001: ¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 2000: ¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1999: ¥2,300,000 (Direct Cost: ¥2,300,000)
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| Keywords | Tropical saline soil / Salt-tolerant weed / Vegetational change / Saline soil improvement / Salt content of soil / Greening technology / Salt damage mechanism / Salt Tolerance mechanism / 土壌改善 / サリチル酸 / アンモニア蓄積 / 植生改変 / 土壌環境 / 塩害発現機構 / 耐塩性調節 / 耐塩性制御 / 圃場試験 / 微細環境 |
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| Research Abstract |
Basic research and field test for the development of greening technology were conducted by utilization of salt-tolerant weeds to the salt-affected soil spreded in the world.
For the field test, several weeds species were transplanted on the saline soil in Phimai of Northeastern Thailand to make clear the effects of weed planting on the changes of micro-environments and the possibility in greening of saline soil. Salt content was decreased in all the plots of the weed planting compared with that of no weed control plot, suggesting that weeds may be used to improve the saline soil as the pioneer plants. However, it is unclear that the effects on decreasing saltcontent in soil are due to the evaporation of soil moisture from the soil surface or the absorption of salts into the plants. Furthermore, it is necessary to conform the effects for a longer time and the magnitude of the effects to establish the greening technology by utilization of weeds.
During the research period, the mechanisms of salt damage and salt tolerance in weed species in the viewpoint of the occuring and sacvenging of activated oxygens under the salt stress and the development of propagation of the usuful weeds for the greening of saline soil by tissue culture technology were also investigated.
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