PJB-2019-563
ALLEVIATION OF SALT STRESS IN LEMON GRASS (CYMBOPOGON FLEXUOSUS STEUD. WATS.) BY SALICYLIC ACID
Zeeshan Rehman
Abstract
Soil salinity is one of the key factors adversely affecting the growth, yield, and quality of crops. Present study is planned to study the adverse effect of salinity in lemongrass (Cymbopogon flexuosus Steud. Wats.) and to determine the ameliorative effect of salicylic acid(S.A) against salinity stress. Various growth parameters including (i) morphological such as stem diameter, root and shoot lengths, number of leaves and tillers, leaf area, as well as root, shoot fresh and dry weights of plants, (ii) physiological like total chlorophyll content, leaf relative water contents, leaf succulence and moisture contents of leaves and (iii) biochemical (only quantitative) like catalase, superoxide dismutase, peroxidase, non-enzymatic and enzymatic antioxidants activities, were studied under constant concentration of salinity level (100 mM). It was observed that salt effected all morphological, physiological and biochemical parameters however, various SA concentrations (0.1, 0.5 and 1.0 mM) significantly reduced salinity effect when applied exogenously on leaves in the form of spray. This study hints at a possibility that SA can be effectively used for the alleviation of salt stress in lemon grass, however further experimentation under field condition is required to evaluate and harness the potential benefit it had for good plant growth and yield.
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