叶螨危害对豇豆叶片超氧化物歧化酶及过氧化氢酶活性的影响  

Effect of Tetranychus cinnabarinus Boisduval on activity of superoxide dismutase and catalase of cowpea( Vigna sinensis )seedling leaves

作　　者：李玉泉[1] 宋占午[1] 王莱[1] 金祖荫[1] 袁惠君[1] 

机构地区：[1]西北师范大学生命科学学院,甘肃兰州730070

出　　处：《西北师范大学学报（自然科学版）》2001年第3期62-65,共4页Journal of Northwest Normal University(Natural Science)

基　　金：甘肃省教委科研资助课题 (981 19)

摘　　要：对豇豆 (Vignasinensis)幼苗受朱砂叶螨 (TetranychuscinnabarinusBoisduval)危害初期超氧化物歧化酶 (SOD)、过氧化氢酶 (CAT)活性的变化进行了初步研究 .每片叶分别接虫 0 ,2 0 ,4 0头 ,危害 0～ 8d .结果表明 ,在测定期间 ,对照的SOD活性持续降低 ,2d时处理的活性明显上升 ,随后逐渐降低 ,但始终不低于 0d的活性 ,处理与对照间的活性差异显著 ,且随虫口密度增大差异增大 ;在叶螨危害 2d时 ,不同虫口密度处理的CAT活性均较对照升高 ,差异显著 .随危害时间延长 ,CAT活性比对照降低 ,且虫口密度越大降低的幅度越大 .Populations of carmine spider mite( Tetranychus cinnabarinus Boisduval)have been studied to determine their influence on activity of superoxide dismutase(SOD) and catalase(CAT) of cowpea( Vigna sinensis ) seedling leaves.The results are as follows:1)2～8?days after treatment,the SOD activity increases remarkably,there is a significant difference( P <0 05)compared with control group,but no difference between different population groups except the 4th days.2)2?days after damage,the CAT activity increases remarkably,there is a significant difference( P <0 05)compared with control group.But from the 4th day,the CAT activity decreases continuously and the more the population,the greater the reduced range of CAT activity.

关 键 词：朱砂叶螨 虫害 豇豆幼苗 SOD 过氧化氢酶 CAT 

分 类 号：S436.43[农业科学—农业昆虫与害虫防治]