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。
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.
出处
《华北农学报》
CSCD
北大核心
1992年第3期50-53,共4页
Acta Agriculturae Boreali-Sinica
基金
农业部国家自然科学基金资助项目
关键词
玉米
抗冷性
膜脂
膜结合酶
Maize
Cold resistance
Membrane lipid
ATPase
