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水杨酸对盐胁迫下膜荚黄芪幼苗生长的影响

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以膜荚黄芪为试验材料，研究了不同浓度外源水杨酸（SA）对盐胁迫下幼苗叶片叶绿素含量、丙二醛（MDA）含量、脯氨酸（Pro）含量、相对电导率及超氧化物歧化酶（SOD）、过氧化物酶（POD）和过氧化氢酶（CAT）活性的影响。结果表明，盐胁迫使膜荚黄芪的生长明显受到抑制，加入不同浓度的水杨酸后对抑制作用有明显缓解效果，使叶绿素含量增加，超氧化物歧化酶、过氧化物酶和过氧化氢酶活性都有所提高，而相对电导率和丙二醛含量降低。说明水杨酸对膜荚黄芪幼苗盐胁迫有明显缓解效果。
lnfluences of Salicylic Acid on Seedling Grow of Astragalus membranace-us(Fisch.) Bge. under Salt Stress
The influences of salicylic acid with different densities on chloro-phyll content in the leaves, malondialde-hyde (MDA), proline (Pro) content, rela-tive conductivity and superoxide dismu-tase (SOD), peroxidase (POD) and cata-lase (CAT) activity of seedling grow of Astragalus membranaceus (Fisch.) Bge. under salt stress. The results showed that salt stress inhibited the growth of As-tragalus membranaceus (Fisch.) Bge. . After adding various concentrations of salicylic acid , inhibition effect had eased significantly, and increased chlorophyll content, activities of super-oxide dismutase, catalase and peroxi-dase, while the relative conductivity and MDA decreased . Salicylic acid had sig-nificantly alleviate effects of seedlings salt stress on Astragalus membranaceus (Fisch.) Bge..

Astragalus mem-branaceus (Fisch.) Bge.Salt stressEx-ogenous salicylic acidPhysiological in-dices

陈怀保、范丽娟、陈叶

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河西学院，甘肃张掖 734000

甘肃省高台县种子公司，甘肃高台 734300

膜荚黄芪 盐胁迫 外源水杨酸 生理指标

2016

农业灾害研究

农业灾害研究

影响因子：0.451
ISSN：1004-7395
年,卷(期)：2016.6(5)
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