| 盐碱胁迫对5种牧草生物膜透性及保护酶活性的影响 |
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| 引用本文： | 高红兵,曹丽娟,刘宝东,刘盛.盐碱胁迫对5种牧草生物膜透性及保护酶活性的影响[J].安徽农业科学,2008,36(8):3101-3103. |
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| 作者姓名： | 高红兵 曹丽娟 刘宝东 刘盛 |
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| 作者单位： | 北华大学林学院,吉林,吉林,132013;北华大学林学院,吉林,吉林,132013;北华大学林学院,吉林,吉林,132013;北华大学林学院,吉林,吉林,132013 |
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| 基金项目： | 吉林省林业厅资助项目(200305). |
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| 摘 要： | 目的]探讨牧草耐盐碱机理及筛选耐盐碱品种。方法]利用不同浓度盐碱处理,研究了盐碱胁迫下细胞膜透性及保护酶活性变化规律。结果]随着NaHCO3和Na2SO4浓度增加,牧草细胞膜透性与丙二醛含量(MDA)变化密切相关,过氧化氢酶(CAT)和超氧化物歧化酶(SOD)活性均呈规律性变化。细胞膜透性的增加是由于膜的过氧化造成的,各种保护酶活性均呈先升后降的趋势,保护酶活性强的牧草品种耐盐碱能力强。结论]5种牧草耐盐碱能力强弱的排列顺序为:细茎冰草>北冰草>披碱草>黑麦草>扁穗冰草。
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| 关 键 词： | 牧草 盐碱胁迫 保护酶 |
| 文章编号： | 0517-6611(2008)08-03101-02 |
| 修稿时间： | 2007年11月26 |
Influences of Salt-alkai Stress on Biomembrane Permeability and Protective Enzyme Activiety of Five Species Forage |
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| GAO Hong-bing et al.Influences of Salt-alkai Stress on Biomembrane Permeability and Protective Enzyme Activiety of Five Species Forage[J].Journal of Anhui Agricultural Sciences,2008,36(8):3101-3103. |
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| Authors: | GAO Hong-bing |
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| Abstract: | Objective] The reserch amied to discuss the forage salt tolerance mechanisms and select the forage provided with the high ability of salt tolerance Method] With the different salt concentrations treated, the biomembrane permeability and the changing rule of protective enzyme activity were studied. Result] As the salt concentration increased, the forage biomembrane permeability was close interrelated with the MDA content, and the activicty of the catalase and the superoxide dismutase enzyme ascended firstly and then descended. The forage species that the protective enzyme activity was strong had the high ability of salt tolerance. Conclusion] The sequence of the forage salt tolerance ability according to strong and weak were Agropyron trachycaulum>Agropyron dasyetachyum>Elymus dahuricus>Loium perenne>Agropyron cristatum. |
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| Keywords: | Forage Salt-alkali stress Protective enzyme |
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