EFFECT OF SALINITY STRESS ON PHYSIOLOGICAL, BIOCHEMICAL AND ANTIOXIDANT DEFENSE SYSTEMS

Abstract

Salinity stress is a major adverse factor that limits agricultural productivity and this is one of the major abiotic stresses faced by plants. Salinity affects plant growth, physiological activities and developmental processes. Soya bean is one of the proteinaceous commercial crops in India, where salt stress is the limiting factor. In the present work, six cultivars of beans (ADB-22, DSB-20, JS-93.05, JS-93.37, JS-335, and LSB-18) were tested under differing NaCl concentrations to assess their performance in salt conditions. The aim was to select salt tolerant bean cultivars. In order to investigate the effect of salt stress on plant height, fresh and dry weight, chlorophyll levels, total protein content, SOD, Catalase, Lipid peroxidase (LPX), Glutathione reductase (GR) and Ascorbate peroxidase (APX) of Soya plants of all the six cultivars subjected to salinity levels at varyin