Rice (Oryza sativa L.) is one of the ancient, cultivated crops which is consumed by over half of the world’s population. Globally the percentage of soil affected by salinity is increasing, with irrigated areas of particular concern. Rice is highly salt sensitive crop that may lose 50% of its yield at a soil electrical conductivity (EC) value of only ~6 dsm−1. About 150 genotypes from Bengal and Assam Aus Population (BAAP) was used for this experiment having four replications with three different salt treatments i.e. control (0 dsm−1), 2 dsm−1 and 4 dsm−1. The seeds were sown in a 38 cm long tubes whose bottom was closed with a fine mash to pass water but not soil. The tubes were placed in a box whereas each box contained 15 tubes with 15 different genotypes. Sea water collected from Cox’s Bazar was diluted up to the desired level by adding ground water. All the traits showed significant treatments effect. Salt injury score (SIS), stomatal conductivity, grain biomass had significant genotype and treatment effects whereas SIS had highly significant (p<0.001) negative correlation with grain biomass (-0.55). Plant height, shoot biomass, stomatal conductivity and SIS showed normal frequency distribution in three of the treatments. Salt tolerant accessions have been identified. Genome Wide Association mapping will be presented to identify to identify QTLs and candidate genes responsible for salt tolerance from those genotypes of BAAP.