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.
出处
《江苏农业学报》
CSCD
北大核心
2009年第4期856-860,共5页
Jiangsu Journal of Agricultural Sciences
关键词
辣椒苗
生物源脱落酸
盐胁迫
生理指标
pepper seedling
microorganism-sourced ABA
salt stress
physiological index
