Study of Protein Accumulation in Some Native Rice Genotypes Under Salinity Stress

E. Abhilash Joseph; V.V. Radhakrishnan; K.V. Mohanan

Volume : IV, Issue : XI, November - 2014

Study of Protein Accumulation in Some Native Rice Genotypes Under Salinity Stress

E. Abhilash Joseph, V. V. Radhakrishnan, K. V. Mohanan

Abstract :

Salinity is one of the most important abiotic stresses that limit growth, development, productivity and yield in crop plants. Rice plant is glycophytic in nature but some genotypes have developed adaptations to tolerate moderate levels of salt stress. Salt stress is expressed with the help of both structural and physiological adaptations. Production of stress proteins is one such adaptation thus increasing total protein content in salt stressed plants. A pot experiment was carried out in the first crop season of 2013 to examine the variation in total protein content under salt stress in certain native rice cultivars of Kerala state of India. The rice plants were exposed to increasing salinity concentrations (0, 10, 30, 50, 70, 100 and 200 mM NaCl) progressively. The present study showed that there was a significant increase in protein accumulation in all the rice genotypes studied, in relation to progressive salt stress. The percentage of increase was significantly higher in salt sensitive genotypes.