Green Global
Foundation   Journal
...an emerging window for scientific research and publication across the globe

PHOTOSYNTHESIS, DRY MATTER PRODUCTION AND YIELD OF SOYBEAN GENOTYPES UNDER DIFFERENT SALINITY LEVELS (Pages : 15 - 18)

Salinity seriously threatens crop production in arid and semi-arid regions. A pot experiment was conducted at the Bangladesh Institute of Nuclear Agriculture, Mymensingh during January to May 2016 to investigate the effect of salinity at different growth stages on morphological characters, yield attributes and yield of three soybean genotypes viz. Binasoybean-4, SBM-18 and Binasoybean-3. Salinity of 3 and 6 dSm-1 was imposed at pre-flowering stage of the soybean genotypes along with a control. The experiment was laid out in a Completely Randomized Design with three replications. Photosynthesis, chlorophyll content, nitrate reductase activity, plant height, number of branches per plant, number of leaves per plant, total dry matter, number of pods per plant, number of seeds per pod, seed, 100-seed weight and seed yield were gradually reduced with increasing level of salinity as compared to those of control. Plant height decreased more in SBM-18 by higher salinity level (6 dSm-1) compared to control. Under the treatments, Binasoybean-4 showed the highest number of seeds per pod, total dry matter and seed yield per plant. SBM-18 produced the highest number of leaves and pods per plant with the lowest total dry matter. Binasoybean-3 showed the highest plant height and total dry matter but the lowest seed yield per plant. Among the genotypes, Binasoybean-4 and SBM-18 performed better than Binasoybean-3 under salt stress.Download