Studies on Seed Priming with Hydrogen Peroxide for Mitigating Salt Stress in Rice

Abstract

The study to evaluate the effect of seed priming with hydrogen peroxide (H2O2) (0.25, 0.50 and 0.75%) on seed germination and vigour of three different rice varieties of salt tolerant (TNAU Rice TRY 3), salt sensitive [ADT (R) 49] and moderately salt tolerant (Co 43) varieties at different salt concentrations (100, 150 and 200mM)revealed that seed priming with hydrogen peroxide @ 0.25% recorded maximum germination in all the varieties when compared with hydroprimed and unprimed seeds irrespective of the salt concentrations. This treatment improved the germination performance of the salt sensitive rice variety (ADT (R) 49) also under higher NaCl concentrations.