水杨酸和壳聚糖对黄瓜幼苗耐盐性的共诱导作用  

Interactive Effect of Salicylic Acid and Chitosan on Induced Salt Tolerance of Cucumber Seedlings

作　　者：董涛[1] 张志刚[1] 尚庆茂[1] 

机构地区：[1]中国农业科学院蔬菜花卉研究所,北京100081

出　　处：《中国蔬菜》2009年第2期46-50,共5页China Vegetables

基　　金："十一五"国家科技支撑计划项目(2006BAD07B04);科研院所技术开发研究专项(2005-GKZX-316);公益性行业(农业)科研专项(nyhyzx07-007);中国农业科学院作物科学研究所中央级公益性科研院所基本科研业务费专项资助项目

摘　　要：以盐敏感黄瓜品种津优1号为试材,采用水培方法研究了水杨酸(salicylic acid,SA)、壳聚糖(chitosan,CTS)对黄瓜幼苗耐盐性的诱导效果及作用机理。结果表明:盐胁迫条件下,SA与CTS共同施用使黄瓜幼苗的壮苗指数分别比对照和SA、CTS单独施用提高15.39%、8.31%、8.02%,差异达到了显著水平;SA与CTS共同施用的黄瓜叶片保护酶(SOD、POD、CAT)活性最高,SA、CTS单独施用次之,对照最低;对照的活性氧(O.2-、H2O2)、电解质渗出率及丙二醛含量最高,SA、CTS单独施用次之,SA与CTS共同施用的最低。说明SA、CTS在诱导黄瓜幼苗耐盐性中具有协同效应。Salt-sensitive cucumber cuhivar ＇ Jinyou No. 1 ＇ was used to study interactive effect of salicylic acid and chitosan on induced salt tolerance of cucumber seedlings by hydroponic culture method. The results showed that SA and CTS mixture increased seedling index of cucumber seedlings by 15.39 % , 8.31% , 8.02 % compared with the control and SA, CTS single treatment under salt stress. Protected enzyme activity of SA and CTS mixture treatment was highest, followed by SA, CTS single treatment, lowest the control. O2^-, H2O2 , permeation rate, malondialdehyde content of the control were highest, SA and CTS mixture was lowest. It was proposed that SA, CTS had the interactive effect on induced salt tolerance of cucumber seedlings.

关 键 词：水杨酸 壳聚糖 黄瓜 盐胁迫 协同效应 

分 类 号：S642.2[农业科学—蔬菜学]