水杨酸对NaCl胁迫下大豆种子萌发和幼苗逆境生理的影响  

Effects of Salicylic Acid on Seed Germination and Seedling Stress Physiology of Soybean(Glycine max L.) under NaCl Stress

作　　者：廖姝[1] 倪祥银[2] 齐泽民[1] 段辉国[1] 

机构地区：[1]内江师范学院生命科学学院,四川内江641100 [2]四川农业大学生态林业研究所,四川成都611130

出　　处：《内江师范学院学报》2013年第2期39-42,共4页Journal of Neijiang Normal University

基　　金：四川省教育厅重点研究项目(09ZA054);内江师范学院生物化学与分子生物学重点建设学科项目(内师院发[2012]96号)

摘　　要：以大豆为实验材料,采用砂培的方法,研究不同浓度SA(0.1、0.2、0.3、0.4mmol/L)对100mmol/LNaCl胁迫下大豆种子萌发和幼苗逆境生理的影响.结果表明,一定浓度的SA可以促进NaCl胁迫下大豆种子萌发、根茎生长、生物量积累,增强渗透调节,减小膜脂过氧化,但过高浓度则抑制生长、加剧膜脂过氧化.并且显示,100mmol/L NaCl胁迫下,0.2mmol/L SA对大豆种子萌发的影响效果显著,而0.3mmol/L SA对幼苗逆境生理的影响效果显著.The effect of salicylic acid of different concentrations （SA, 0. 1, 0.2, 0. 3, 0.4 mmol/L） on soybean （Glycine max l.. ） seed germination and seedling physiology under 100 mmol/L NaCI stress were investigated by means of sand culture. The re- suits showed that the seed germination, root and stem growth, biomass and osmotic adjustment were prompted, while the membrane permeability was decreased by high concentration of salicylic acid under 100 mmol/L NaCI stress. But overly high concentration of salicylic acid inhibited the growth and aggravated the membrane permeability. And 0.2 mmol/L SA has signifi- cant effects on seed germination, and at 0.3 mmol/L the effect of SA is most obvious on seedling physiology under NaC1 stress.

关 键 词：水杨酸 NACL胁迫 大豆 萌发 逆境生理 

分 类 号：Q945.78[生物学—植物学]