Vol. 7, Issue 2 (2019)
Effect of salicylic acid on growth and plant water status of sorghum genotype under salt stress
Author(s): M Jangra, S Devi, N Kumar, Satpal and V Goyal
Abstract: Physiological response of sorghum (Sorghum bicolor L.) genotype (HJ 513) against the foliar application of salicylic acid (SA) under salt stress was studied. Present investigation was carried out to evaluate the role of SA in mitigating the adverse effect of salt stress. Experiment was conducted in pots under screen house conditions. Salt stress was maintained by saturating the pots with desired levels of salts and foliar spray of SA (25 and 50 mg l-1) was made after 40 and 80 days after sowing (DAS). Salt stress adversely affected growth and physiological parameters in sorghum genotype. But foliar spray of SA improved plant growth and SA treated plants exhibited better adjustment under salt stress than untreated plants. Foliar spray of 50 mg l-1 of SA was more significant compared to 25 mg l-1. Salicylic acid was sprayed to plants under salt stress showed higher growth rate and enhanced water status in sorghum plants. All growth parameter viz. plant height (cm), fresh and dry weight (g), leaf area (cm2) and leaf number showed declined trend but after application of salicylic acid, values were increased from 19.53 to 27.48, 11.36 to 15.65, 1.12 to 1.80, 50 to 78 and 4 to 5 respectively, with respect to control values at 10 dS m-1. High salt concentration increases the negative value of osmotic and water potential and decreases the value of relative water content. In nutshell, 50 mg l-1 salicylic acid significantly ameliorates the deleterious effect of salt stress in sorghum genotype by maintaining the water status of plants.
Pages: 1180-1184 | 409 Views 73 Downloads
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How to cite this article:
M Jangra, S Devi, N Kumar, Satpal, V Goyal. Effect of salicylic acid on growth and plant water status of sorghum genotype under salt stress. Int J Chem Stud 2019;7(2):1180-1184.
