Morpho physiological traits of some rice varieties in response to shallow water depth

A field experiment was conducted at the Adaptive Research Station, Sakhigopal, Puri during kharif-2012 to study the morpho-physiological basis of yield variation in the newly released rice genotypes. Nine rice genotypes such as Tanmayee, Mrunalini, Tejaswini, Swarna, OR-2327-23, OR-2324-8, Pratikhya, Hiranmayee and Swarna sub-1 were taken into test under shallow water depth condition in the field in a randomised block design (RBD) in three replications. In the present study, higher grain yield was obtained in Tanmayee due to more number of spikelet/panicle, ripened grain/panicle, less number of sterility percentage and total number of spikelet/panicle. On the contrary, lower value of the above characters reduced the grain yield in Swarna sub-1.