Studies on hybrid sterility in rice (Oryza sativa L.) under temperate conditions of Kashmir

The inter sub- specific variability generated has been advanced at two experimental farms constituting two locations in order to study for more promising although less frequent segregants and New Plant Types for two agro ecologies of Kashmir. Besides intervarietal indica and intervarietal japonica variability has been evaluated at 4500 and 7500 feet MSL respectively based on their different degree of tolerance to cold, biotic and abiotic stresses viz-a-viz their growth duration in terms of earliness to flowering and maturity, the most important criteria for selecting a genotype for agro ecology like Kashmir.