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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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Citing This Article：

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).