生物源脱落酸对盐胁迫下辣椒苗生长和某些生理指标的影响  

Effects of Microorganism-sourced ABA on the Growth and Some Physiological Indexes of Pepper Seedling under Salt Stress

作　　者：汤日圣[1] 黄益洪[1] 唐现洪[2] 钟雨[2] 余永柱[2] 童红玉[1] 

机构地区：[1]江苏省农业科学院农业生物技术研究所,江苏南京210014 [2]江苏双沟集团公司,江苏宿迁223911

出　　处：《江苏农业学报》2009年第4期856-860,共5页Jiangsu Journal of Agricultural Sciences

摘　　要：以辣椒品种苏椒5号为试验材料，探讨了生物源脱落酸（ABA）提高辣椒苗耐盐性的效果及其对相关生理生化指标的影响。结果表明：ABA能有效提高辣椒苗的抗盐胁迫能力，在盐胁迫下，经ABA（5．0～40．0mg／L）处理的辣椒苗株高和干物质增长率的减少程度明显低于对照（清水＋0．5％吐温-20）。经ABA（10．0mg／L）处理能有效提高盐胁迫过程中辣椒苗叶片中的超氧化物歧化酶（SOD）活性和减缓丙二醛（MDA）的积累，促进辣椒苗叶片中的可溶性糖、脯氨酸、抗坏血酸（ASA）和还原型谷胱甘肽（GSH）含量大幅增加。Soil secondary salinization has become one of the important factors which adversely affects the protected vegetable growth and yield. The role of microorganism-sourced abscisic acid （ABA） on the growth and some physiological indexes of pepper seedlings （ Sujiao No. 5 ） under salt （ 0. 6% NaCl ） stress were investigated. ABA could effectively enhance the ability of pepper seedling resistance to salt stress. ABA not only enhanced superoxide dismutase （SOD） activity and delayed the increasing of malondialdehyde （MDA） content in the leaves of pepper seedling during salt stress, but increased the contents of soluble sugar, proline, ascorbic acid （ AsA ）, and glutathione （ GSH ） significantly in ABA-treated seedling leaves in comparison with those of control.

关 键 词：辣椒苗 生物源脱落酸 盐胁迫 生理指标 

分 类 号：S641.301[农业科学—蔬菜学]