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水杨酸和阿斯匹林对小麦盐害的缓解作用

张士功, 高吉寅, 宋景芝

中国农业科学院农业自然资源和农业区划研究所.北京 100081；中国农业科学院作物品种资源研究所.北京 100081

摘要

盐胁迫条件下水杨酸和阿斯匹林能提高小麦种子发芽率、发芽指数和活力指数,降低幼苗叶片质膜透性和盐胁迫对细胞膜的伤害,提高幼苗体内超氧化物歧化酶、过氧化物酶等细胞保护酶的活性,减少膜脂过氧化作用产物的丙二醛的积累,降低根系Na~(+)和提高根系K~(+)的向上运输选择性。所有这些变化都有利于缓解盐胁迫对小麦的伤害,提高其对盐胁迫的适应性。

关键词： 盐胁迫; 小麦; 水杨酸; 阿斯匹林; 种子萌发; 幼苗生长; 缓解作用

Mitigative effects of salicylic acid and aspirin on salt stress-induced injuries in wheat (Triticum aestivum L.)

Zhang Shigong, Gao Jiyin, Song Jingzhi

Upland Research Center,Institute of Agricultural National Resources and Agricultural Regional Planning,Chinese Academy of Agricultural Sciences.Beijing 100081；China

Abstract

Mitigative effects of salicylic acid and aspirin on salt stress-induced injuries during the stage of seed germination and seedling growth were studied in wheat. The results showed that, salicylic acid and aspirin could increase the germination percentage, germination index and vigor index, decrease the leaf relative electric conductivity and salt stress-induced injuries of plasma membrane, promote the activities of membrane-protective enzymes such as superoxide dismutase and peroxidase, and delay the accumulation of malon-dialdehyde, decrease transportation selectivity of Na~(+), K~(+) to shoot. It was also found that under 1.20% NaCl salt stress, the most suitable concentration of exogenous salicylic acid and aspirin were 0.10, 0.20g/L respectively. Therefore the injuries caused by salt stress to wheat seed germination and seedling growth were mitigated and the salt-tolerance of wheat were raised by exogenous salicylic acid ans aspirin.

Key words: Salt stress;Wheat(Triticum aestivumL.);Salicylic acid;Aspirin;Seed germination;Seedling growth;Mitigative effect

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引用本文：

张士功, 高吉寅, 宋景芝. 水杨酸和阿斯匹林对小麦盐害的缓解作用[J]. 生理学报 1999; 51 (2): .

Zhang Shigong, Gao Jiyin, Song Jingzhi. Mitigative effects of salicylic acid and aspirin on salt stress-induced injuries in wheat (Triticum aestivum L.). Acta Physiol Sin 1999; 51 (2): (in Chinese with English abstract).