ABSTRACT: Hydrogen sulfide (H2 S) has been recently found to be a signaling molecule to environmental stress tolerance. This study was conducted to investigate the effects of irrigation (Experiments 1 and 2) and foliar application (Experiment 3) of sodium hydrosulfide (NaHS), as a H2 S donor, under NaCl stress. A Bangladeshi salt-tolerant soybean genotype ‘AGS313’ was compared with a salt-sensitive Japanese variety ‘Fukuyutaka’. While the shoot dry weight was improved by NaHS application in the experiment 1, the vegetative growth was not improved by NaHS application in the experiments 2 and 3. NaHS irrigation decreased leaf Cl content, while NaHS foliar application increased photosynthetic rate. These results showed that NaHS application had slightly positive effects on soybean under NaCl stress conditions.
Keywords: Glycine max, oxidative stress, photosynthetic rate, sodium chloride, stomatal conductance
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