| 自然干旱胁迫下紫花苜蓿叶片和根部ABA的代谢变化 |
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| 引用本文： | 任敏,何金环.自然干旱胁迫下紫花苜蓿叶片和根部ABA的代谢变化[J].安徽农业科学,2010,38(4):1771-1772. |
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| 作者姓名： | 任敏 何金环 |
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| 作者单位： | 郑州牧业工程高等专科学校生物工程系,河南郑州,450011;郑州牧业工程高等专科学校生物工程系,河南郑州,450011 |
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| 基金项目： | 河南省自然科学基金项目(0211031300) |
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| 摘 要： | 目的]为苜蓿的抗旱栽培及抗旱品种的选育提供理论依据。方法]以紫花苜蓿为材料,正常供水处理为对照,研究离体干旱条件下其根系和叶片的水分及ABA含量变化。结果]正常供水条件下,紫花苜蓿根部ABA含量低于叶片;干旱胁迫3h后,叶片ABA含量显著高于对照,之后呈下降趋势,而根部ABA含量呈增加趋势,干旱胁迫6h时根部ABA含量增加至最高,为对照ABA含量的3倍多。随着干旱时间的延长,苜蓿叶片相对含水量（RWC）下降,干旱胁迫3h后,叶片RWC从82.5%下降到56.4%;干旱胁迫6h时,叶片RWC仅为33.5%,而根部RWC变化较小。结论]水分胁迫下,植物根部ABA可作为信号分子对植物地上部的生长发育起调控作用。
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| 关 键 词： | 苜蓿 干旱胁迫 水分 ABA |
Changes of ABA Metabolism in Leaves and Roots of Alfalfa under Natural Drought Stress |
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| REN Min et al.Changes of ABA Metabolism in Leaves and Roots of Alfalfa under Natural Drought Stress[J].Journal of Anhui Agricultural Sciences,2010,38(4):1771-1772. |
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| Authors: | REN Min |
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| Institution: | Department of Bioengineering;Zhengzhou College of Animal Husbandry and Engineering;Zhengzhou;Henan 450011 |
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| Abstract: | Objective]The aim was to provide the theoretical basis for drought resistant cultivation and breeding of drought resistant variety of alfalfa.Method]With alfalfa as the material and the treatment with normal water supply as CK,the changes of ABA content in leaves and roots of alfalfa were studied.Result]Under the condition of normal water supply,ABA content in roots of alfalfa was higher than that in leaves.After 3 h of drought stress,ABA content in leaves of alfalfa was significantly higher than that of... |
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| Keywords: | Alfalfa Drought stress Water ABA |
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