Na_2SO_4对桃叶卫矛幼苗抗氧化性的影响  

Effect Na_2SO_4 Treatment on Anti-oxidation of Euonymus bungeanus Seedling

作　　者：江萍[1] 宋于洋[1] 王雪莲[1] 牛攀新[1] 王再[1] 

机构地区：[1]石河子大学农学院林学系,新疆石河子832000

出　　处：《浙江林业科技》2009年第1期40-43,共4页Journal of Zhejiang Forestry Science and Technology

基　　金：石河子大学高层次人才引进项目(5006-822017);石河子大学大学生训练计划项目(SRP0712159)

摘　　要：通过对桃叶卫矛幼苗进行75、150、300、350、400 mmol/L 5种不同浓度的Na2SO4处理,测定并分析了幼苗体内超氧化物歧化酶(SOD)、过氧化氢酶(CAT)及过氧化物酶(POD)活性的变化。结果表明:(1)桃叶卫矛幼苗体内活性氧的保护酶体系主要途径是SOD-CAT+POD;(2)SOD和POD在Na2SO4浓度为300 mmol/L时活性最大;(3)CAT活性在Na2SO4浓度为150 mmol/L时最大,在Na2SO4浓度为300 mmol/L时略次之。据此在实际生产中可以考虑用300 mmol/L左右的Na2SO4对桃叶卫矛幼苗进行抗盐锻炼。Treatment was implemented on Euonymus bungeanus seedlings with different concentrations of Na2SO4, determination and analysis was made on changes of superoxide dismutase （SOD）, catalase （CAT） and peroxidase （POD） activity in the seedlings. The results showed that SOD-CAT was the main way of defense enzyme system in leaves of Eu.bungeanus. The activity of SOD and POD topped when Na2SO4 concentration of 300 mmol/L, that of CAT topped when Na2SO4 concentration of 150 mmol/L, then when concentration was 300 mmol/L. Based on the results, we could treat scedlings of Eu. bungeanus with Na2SO4 concentration of 300 mmol/L for resistance.

关 键 词：桃叶卫矛 超氧化物歧化酶 过氧化物酶 过氧化氢酶 

分 类 号：S792[农业科学—林木遗传育种]