Effect of salicylic acid on germination and seedling growth of wheat cultivars under salt stress conditions (Triticum aestivum L.)

The experiments to determine the effect of salicylic acid on germination and seedling growth of bread wheat under salt stress was applied. Traits such as seed germination, root length, shoot length, seedling fresh weight, germination rate and seed vigor index were evaluated. The data obtained were analyzed in accordance factorial experiment based on completely randomized design with three replications. Analysis of variance on data showed effect of salicylic acid and salinity was significant for all traits and genotype effect on germination percentage, germination rate and seed vigor index were highly significant. With increasing salinity, germination percentage, germination rate, root length, shoot length, seedling fresh weight and seed vigor decreased. Comparison of means for main effects showed that the cultivars are different in traits such as, germination, vigor index and germination rate. In all of traits in normal conditions (distilled water pretreatment) Chamran cultivar was superior sardari cultivar. Consumption of salicylic acid in the without consumption increased the root and shoot length in the normal conditions. But there stresses plants Concentration 0/5 mM salicylic acid in 80 mM NaCl treatment not decreased the shoot length and root length and has been Increased in the seedling fresh weight trait. Chamran response to higher concentrations of salicylic acid was more favorable in the salt stress conditions.