| 低温胁迫下自由基清除剂对香蕉的保护作用 |
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| 引用本文： | 周歧伟,杨美纯,许鸿源,黎兆安. 低温胁迫下自由基清除剂对香蕉的保护作用[J]. 广西农业生物科学, 1998, 0(4) |
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| 作者姓名： | 周歧伟 杨美纯 许鸿源 黎兆安 |
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| 作者单位： | 广西大学农学院!南宁530005 |
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| 摘 要： | 用抗坏血酸、半胱氨酸和二苯胺为外源自由基清除剂 ,喷施于有 5张展开叶威廉斯香蕉组培苗的叶片 ,经 4～ 5℃处理 12 h后 ,研究自由基清除剂对香蕉的保护作用。结果表明 ,外源自由基清除剂预处理降低了低温胁迫下香蕉叶片细胞膜脂过氧化水平和膜透性增加的程度 ,减小了超氧歧化酶活性的下降幅度 ,并延缓了叶片可溶性蛋白和叶绿素含量的下降 ,证明外源自由基清除剂对减轻低温胁迫引起的自由基伤害 ,提高香蕉的抗冷能力具有积极的作用。抗坏血酸预处理的保护效果最好
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| 关 键 词： | 香蕉 自由基清除剂 低温胁迫 膜脂过氧化 |
Protective Effectof Free Radical Scavengers on Banana under Low Temperature Stress |
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| Zhou Qiwei Yang Meichun Xu Hongyuan Li Zhaoan. Protective Effectof Free Radical Scavengers on Banana under Low Temperature Stress[J]. Journal of Guangxi Agricultural and Biological Science, 1998, 0(4) |
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| Authors: | Zhou Qiwei Yang Meichun Xu Hongyuan Li Zhaoan |
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| Abstract: | Three free radical scavengers,Vc,cysteine and diphenylamine were used to study the protective effect on banana under low temperature stress. The experimental results showed that pretreated with free radical scavengers decreased the level of membrane lipid peroxidation of cell and the permeability of plasma membrance,the decreasing of SOD activity was lowered,and the descent range of the contents of chlorophyll and soluble protein in leaf of banana were retard under low temperature stress.The protective effect of Vc shows most powerful. |
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| Keywords: | banana free radical scavenger low temperature stress membrane lipid peroxidation |
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