艾力江·麦麦提;齐曼·尤努斯;公勤;

• 1:新疆农业大学园艺学院

摘要(Abstract)：

以1a生尖果沙枣实生苗为材料进行不同程度的NaCl胁迫处理,研究其细胞膜透性、丙二醛(MDA)含量以及超氧化物歧化酶(SOD)、过氧化物酶(POD)和过氧化氢酶(CAT)活性的变化。结果表明,在胁迫的不同时期,各处理膜透性的变化呈增加的趋势,且随时间的延长各处理中叶片的膜透性也逐渐增大。整个处理过程中,MDA含量逐渐增加,但增加幅度不大,表明脂质过氧化反应水平较低。各处理中SOD和CAT活性整体上呈增加趋势,其中NaCl胁迫30d,随盐度的加重其活性达到最大值。另外,胁迫20d以内,POD活性随NaCl浓度的升高先增加后下降,并相同的处理中,随着时间的延长有所降低。经相关性分析可知,尖果沙枣的膜透性、MDA含量与抗氧化酶活性之间有一定的关系,表明尖果沙枣细胞膜透性与脂质过氧化产物(MDA)含量有关,也与组织中抗氧化酶活性密切相关。

关键词(KeyWords)： 尖果沙枣;NaCl胁迫;膜透性;丙二醛;抗氧化酶

Abstract:

Keywords:

基金项目(Foundation): 自治区高校科研计划重点项目(XJEDU2005113)

作者(Author): 艾力江·麦麦提;齐曼·尤努斯;公勤;

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