水杨酸浸种对NaCl胁迫下辣椒种子活力及抗盐性的影响  

Effects of Salicylic Acid Presoaking on Vigor and Salt Resistance of Capsicum frutescans L. Seed under NaCl Stress

作　　者：段辉国[1,2] 倪祥银[1] 黎勇[1,2] 赵涛[1] 黄晓西[1] 贾敏[1] 

机构地区：[1]内江师范学院生命科学学院,四川内江641100 [2]特色农业资源研究与利用四川省高等学校重点实验室,四川内江641100

出　　处：《内江师范学院学报》2011年第10期32-34,41,共4页Journal of Neijiang Normal University

基　　金：四川省教育厅重点研究项目(09ZA054);内江师范学院生态学重点建设学科项目(内师科字[2007]24号)

摘　　要：以辣椒种子为实验材料,用不同浓度的水杨酸(SA)浸种和对辣椒幼苗进行根部处理,研究100mmol/LNaCl胁迫对辣椒种子活力及抗盐性的影响.结果表明:一定浓度SA可以缓解辣椒种子盐害,提高其发芽率、发芽势,保护细胞膜的通透性,降低种子浸出液电导率和丙二醛(MDA)含量,缓解辣椒幼苗细胞膜脂过氧化.但超过一定浓度的SA则会抑制辣椒种子的萌发,使种子浸出液电导率和丙二醛含量升高.Studied in this experiment was the effects of presoaking with salicylic acid（SA） of different concentrations on vigor and salt resistance of Capsicum frutescans L. seed under NaC1 Stress of 100 mmol/L. The results showed that salicylic acid of certain concentrations could alleviate salt injury, improve germination percentage and potentiality, protect membrane permeability of Capsicum frutescans L. seed, and reduce conductivity and malondialdehyde content of the seed leaching solu- tion, eliminate membrane lipids peroxide. But when the concentration of salicylic acid reaches beyond a certain level, it could inhibit germination of Capsicum frutescans L. seed, and increase conductivity and malondialdehyde content of the seed leaching solution.

关 键 词：水杨酸 辣椒 种子活力 抗盐性 

分 类 号：S641.3[农业科学—蔬菜学]