外源水杨酸对樱桃番茄幼苗盐伤害的缓解效应  

The Mitigative Effects of Exogenous Salicylic on Salt-stress Cherry Tomato Seedlings

作　　者：孟长军[1] 

机构地区：[1]西安文理学院生命科学系,陕西西安710065

出　　处：《河南农业科学》2011年第8期160-163,共4页Journal of Henan Agricultural Sciences

基　　金：国家"863"计划项目(2001AA247012)

摘　　要：以耐盐性差异显著的2个樱桃番茄品种京丹5号(耐盐性较强)和小圆枣(耐盐性较弱)为试材,用不同质量浓度的水杨酸(0.008 g/L、0.04 g/L、0.12 g/L和0.20 g/L)喷施叶面,以蒸馏水为对照,研究了外源水杨酸(SA)对樱桃番茄幼苗盐害的缓解效应。结果表明,外源SA处理京丹5号和小圆枣幼苗后,除0.008 g/L SA对提高樱桃番茄幼苗耐盐性效果不明显外,0.04、0.12、0.20 g/L SA处理均可增强樱桃番茄幼苗的耐盐性,叶片SOD活性、POD活性、CAT活性、可溶性蛋白含量和叶面积均高于对照,以0.12 g/L SA处理效果最佳。此外,SA对耐盐性较强品种的盐害缓解效应要优于耐盐性较弱品种,京丹5号的叶面积、保护酶活性和可溶性蛋白的增加幅度以及相对电导率的下降幅度要大于小圆枣。Using tomato cv.Jingdan5（stronger salt resistance） and Xiaoyuanzao（weaker salt resistance） as materials,the effects of exogenous salicylic acid（SA） on salt resistance-related parameters of cherry tomato were examined.Main results were as follows.After cherry tomato was treated with different concentration of SA（0.008g/L,0.04g/L,0.12g/L,and 0.20g/L）,salt resistance of the seedlings of Jingdan5 and Xiaoyuanzao were significantly enhanced except 0.008g/L SA.The activities of SOD,POD,CAT,and the content of soluble protein of cherry leaves are higher in SA-stress tomato seedlings than in controls.Among different concentration of SA treatments,0.12g/L SA presented the best effect.In addition,SA is more useful to the cultivar with stronger salt resistance than the cultivar with weaker salt resistance.Increasing rate of leaf area,activities of protective enzymes,and soluble protein are higher in Jingdan 5 than those inXiaoyuanzao,and decreasing rate of relative electric conductivity is higher in Jingdan5 than that of Xiaoyuanzao.

关 键 词：水杨酸 樱桃番茄 盐伤害 缓解效应 

分 类 号：S641.2[农业科学—蔬菜学]