GROWTH AND YIELD PERFORMANCE OF SEVEN RICE VARIETIES UNDER MODERATE SALINITY STRESS

Abstract

Salinity is a major problem in the Southern part of Bangladesh that reduces the country's rice production. The present investigation was carried out at Bangladesh Institute of Nuclear Agriculture (BINA) Sub-station, Satkhira during Boro season (December-April) of 2020-21to evaluate five hybrid and two inbred salt tolerant rice varieties under moderatesalinity stress. Ontogenetic growth study revealed that all the rice varieties produced the highest number of leaves and tiller at 78 and 64 DAT (Days after Transplanting), respectively. Based on the morphological performance, hybrid rice namely Hira-2 followed by Tejgold and HYV rice namely Binadhan-10 produced the highest grain yield due to increased seed width, 1000 seed weight and total dry matter production. In addition, the seed width showed strong positive correlations with the grain yield and 1000-grain weight indicated an important trait for higher grain yield production in rice. Therefore, further studies are needed in different level of saline areas to identify the potential saline tolerant high yielding rice variety in boro season

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