| 膜脂组成和膜结合酶活性与玉米幼苗抗冷性的关系 |
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| 引用本文： | 李俊明,张海明.膜脂组成和膜结合酶活性与玉米幼苗抗冷性的关系[J].华北农学报,1992,7(3):50-53. |
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| 作者姓名： | 李俊明 张海明 |
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| 作者单位： | 河北省农林科学院理化所，河北省农林科学院理化所，河北省农林科学院理化所，河北省农林科学院理化所，内蒙古农牧学院，内蒙古农牧学院 石家庄 050051，石家庄 050051，石家庄 050051，石家庄 050051，呼和浩特 010018，呼和浩特 010018 |
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| 基金项目： | 农业部国家自然科学基金资助项目 |
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| 摘 要： | 玉米黄化幼苗经4～5℃低温处理36小时后,膜脂组成在自交系间、处理和对照间没有差异;膜脂肪酸不饱和度发生明显变化,抗性强的自交系不饱和指数提高,抗性差的不饱和指数降低,膜结合酶(叶绿体K~+-Mg~(2+)ATPase和线粒体Na~+-K~+ATPase)活性降低,抗性差的自交系膜结合酶活性降低幅度大于抗性强的自交系。
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| 关 键 词： | 玉米 抗冷性 膜脂 膜结合酶 |
The Relationship Among Membrane Lipids Membrane Linked Enzymes and Maize Cold-Resistance |
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| Li Junming Zhang Jingxian Cui Siping Wei Jiankun.The Relationship Among Membrane Lipids Membrane Linked Enzymes and Maize Cold-Resistance[J].Acta Agriculturae Boreali-Sinica,1992,7(3):50-53. |
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| Authors: | Li Junming Zhang Jingxian Cui Siping Wei Jiankun |
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| Abstract: | After the yellowish seedlings of maize inbreds were treated at 4 C and for 36 hours, the IUFA (Index of Unsaturated Fatty Acids) of cold-resistant inbreds increased where the IUFA of cold-sensitive inbreds decreased. The IUFA of the latter was higher than that of the former no matter whether the temperature was normal or low. Activities of both mitochondria membrane linked K + -Na+ ATPase and of chloroplast membrane linked K+-Mg + + ATPase decreased at low temperature, and the ATPase activity of the cold-sensitive inbreds decreased more severely than that of the cold-resistant inbred. |
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| Keywords: | Maize Cold resistance Membrane lipid ATPase |
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