盐胁迫对两种沙枣抗氧化酶活性的影响  

Effects of Salt Stress on Activities of Antioxidant Enzymes of Two Kinds of Elaeagnus angustifolia L.Seedlings

作　　者：张桂霞[1] 李树玲[1] 

机构地区：[1]天津农学院园艺系,天津300384

出　　处：《北方园艺》2011年第10期46-49,共4页Northern Horticulture

基　　金：天津市科技发展计划资助项目(043124211)

摘　　要：以盆栽大果沙枣和尖果沙枣实生苗为试材,采用不同浓度NaCl处理进行盐胁迫,研究盐胁迫对2种沙枣实生苗叶片中抗氧化酶活性的影响。结果表明:尖果沙枣对低浓度的NaCl胁迫不敏感,NaCl浓度升高,体内保护酶活性呈现先升高后降低的趋势。大果沙枣对NaCl胁迫反应敏感,低浓度即启动体内调节机制适应盐胁迫。NaCl浓度升高,体内保护酶活性呈现先升高后降低的趋势。由此表明,2种沙枣都有一定的耐盐性。尖果沙枣的耐盐性强于大果沙枣。Took pot Elaeagnus oxycarpa Schlecht.and Elaeagnus moorcroftii seedlings as experimental materials,the effects of salt stress on leaf antioxidant enzymes activities of two kinds of Elaeagnus angustifolia L.seedlings,which were treated with different concentration NaCl were studied.The results showed that Elaeagnus oxycarpa Schlecht.had a thick skin about NaCl stress in low concentration,and the activities of protective enzymes in the plant increased first and decreased then with the adding of NaCl concentration.Elaeagnus moorcroftii reflected sensitivity to salt stress of NaCl,and started the mechanism of adjustment in low NaCl concentration.The activities of protective enzymes alleviated first and decreased then with the adding of NaCl concentration.They were able to endure the salt stress.The salt endurance of Elaeagnus oxycarpa Schlecht.was better than Elaeagnus moorcroftii.

关 键 词：沙枣 盐胁迫 抗氧化酶活性 

分 类 号：S6[农业科学—园艺学]