Indian Journal of Plant Physiology

A field experiment was conducted with six indica rice genotypes to evaluate the suitability under periodic water stress or aerobic conditions. Genotypes were characterized by various physiological and biochemical parameters at various growth stages. Amongst the genotypes DRRH-1 had maximum RWC (%) with maximum grain yield under periodic water stress. The total protein content decreased in almost all the six genotypes under periodic water stress. Jaya had maximum protein & proline content. The total chlorophyll content decreased in almost all the genotypes under periodic water stress and higher chlorophyll stability index was recorded in Pant Dhan 4. The maximum photosynthetic efficiency (Fv/Fm) was found in Kasturi which indicate minimum photosynthetic damage in these genotypes. Amongst these genotypes DRRH-1 showed very mild effect of stress on yield potential, however, Jaya exhibited good proline & RWC content with poor yield under stress condition. Therefore, DRRH –1 might be recommended for aerobic cultivation.