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Performance of Some Salt Tolerant Rice Genotypes in Coastal Regions of Bangladesh under Irrigated Dry Season

This paper is available in a repository.
This paper is available in a repository.

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Abstract

The environmental stresses are now the major problems of crop production. The situation has been further worsened by anthropogenic activities. Soil salinity is a major abiotic stress that limits rice productivity worldwide. The problem is intense particularly in areas with extremely dry and hot climatic conditions. Designing an effective phenotyping strategy requires thorough understanding of plant survival under stress. Therefore, research thrust is more concentrated to enhance crop productivity under environmental stress to cope with increasing food demands. Salinity, affects the survival, biomass production and yield of rice. Four salt tolerant advanced lines: BR7100-R-6-6, IR78794-B-Sat 29-1, IR59418-7B-21-3 and BRRI dhan28-Saltol along with BRRI dhan47 and BRRI dhan28 were tested at 8 (eight) saline prone area of Bangladesh during Boro, 2013. The 1st and 2nd highest yielder IR59418-7B-21-3 and IR78794-B-Sat 29-1 were found to be matured in 143 and 147 days respectively, which were 9 and 5 days earlier than the check variety BRRI dhan47. Based on grain yield, growth duration, salt tolerance, non-shattering character, grain quality and farmers’ opinion, IR59418-7B-21-3 and IR78794-B-Sat 29-1 were found to be suitable for Proposed Variety Trial (PVT).