Evaluation of Selected Salt Tolerant Soybean Genotypes in Southern Saline Soils of Bangladesh

Abstract

Globally salinity is one of the most detrimental factors affecting crop growth, development and yield. Understanding crop responses or growth potential and their effectiveness in salinity mitigation is highly important for selecting salinity tolerant crop. Therefore, a research study was undertaken to evaluate the selected soybean genotypes in southern saline soil of Bangladesh.  In this study, two selected salt tolerant soybean lines (V1 = Vietkhai and V2 = G 00382), one moderately salt tolerant soybean line (V3 = USDA-15), one salt sensitive soybean variety (V4 = Binasoybean-4) and a standard check (V5 = BARI Soybean-5) were used to know the yield, yield attributes and seed quality parameters of the soybean genotypes in southern saline soils of Bangladesh. The experiments were conducted at two locations of Shatkhira, one is on station (OS), ARS, BARI, Binerpota and another is farmer’s field (FF), Harodda. The experiments in two locations were laid out in RCBD (randomized complete block design) with three replications. During the entire monitoring interval, OS consistently exhibited higher electrical conductivity (EC) over FF. In field condition, the highest seed yield and, germination % of seed, seedling dry weight, seed protein content, oil content of seed, seed vigor index, fatty acid composition of seed and all of the seed quality parameters were found higher from Vietkhai and G 00382 whereas the lowest values were obtained from salt susceptible genotype Binasoybean-4.  From the findings of the study, it may be concluded that, soybean genotypes G 00382 and Vietkhai could be recommended as soybean cultivars for southern saline zones of Bangladesh.