CORRELATION BETWEEN PHYTOTOXICITY ON ANNUAL RYEGRASS (Lolium rigidum) AND PRODUCTION DYNAMICS OF ALLELOCHEMICALS WITHIN ROOT EXUDATES OF AN ALLELOPATHIC WHEAT |
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| 出 版 社：Journal of Chemical Ecology |
| 发表时间：2003-10 |
| 台 站：
会同森林生态系统定位研究站
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| 作 者：Huang Zhiqun |
| 点 击 率：456026 |
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| 关 键 字：Allelopathic correlation, wheat root exudate, production dynamics, |
| 摘 要：An improved allelopathic correlation between phytotoxicity measured
in root growth bioassay upon annual ryegrass (Lolium rigidum Gaud.)
and the concentrations of a selection of dynamically produced allelochemicals
quantified in the root exudates of cv. Khapli wheat (Triticum turgidum ssp.
durum (Desf.) Husn.) monitored during the first 15 days of wheat seedling
growth in a sterile, agar–water medium, has been established. Changes over the
15-day growth period in the quantities of five exuded benzoxazinones and seven
phenolic acids were measured simultaneously using GC/MS/MS. Substantiating
pure compound dose–response measurements were conducted over a range
of concentrations for the putative allelochemicals within the wheat exudates.
One synergism-based proposal using the monitored compounds to explain the
observed low-exudate-concentration phytotoxicity was explored, but was found
to be experimentally inadequate. |
| 关 键 字(英文)：Allelopathic correlation, wheat root exudate, production dynamics, |
| 摘 要(英文)：An improved allelopathic correlation between phytotoxicity measured
in root growth bioassay upon annual ryegrass (Lolium rigidum Gaud.)
and the concentrations of a selection of dynamically produced allelochemicals
quantified in the root exudates of cv. Khapli wheat (Triticum turgidum ssp.
durum (Desf.) Husn.) monitored during the first 15 days of wheat seedling
growth in a sterile, agar–water medium, has been established. Changes over the
15-day growth period in the quantities of five exuded benzoxazinones and seven
phenolic acids were measured simultaneously using GC/MS/MS. Substantiating
pure compound dose–response measurements were conducted over a range
of concentrations for the putative allelochemicals within the wheat exudates.
One synergism-based proposal using the monitored compounds to explain the
observed low-exudate-concentration phytotoxicity was explored, but was found
to be experimentally inadequate. |
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 CORRELATION BETWEEN PHYTOTOXICITY ON ANNUAL.pdf |
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