Genotypic variations in growth, yield and yield components of soybean genotypes under drought stress conditions

Abstract

A pot experiment was carried out in a venylhouse at Bangabandhu Sheikh Mujibur Rahman University during 2012 to investigate the growth, yield and yield contributing characters of ten selected soybean genotypes viz. Shohag, BARI Soybean-6, BARI Soybean-5, BD2331, BD2329, BD2336, BD 2340, BGM2093, G00015 and BGM2026 under drought stress and control conditions. Plant height, number of leaves, leaf area, shoot and root dry weight of all the genotypes were significantly affected by the stress. Among the genotypes Shohag, BARI Soybean-6 and BD2331 were found tolerant in relation to the growth under water stress conditions. The reduction in RGR values was more in the susceptible genotypes at the later stages of growth than in the tolerant genotypes. Seed yield of the genotypes was reduced from 42 to 68% due to drought (water) over non-stress. Susceptible genotypes showed greater reduction in seed yield than the tolerant genotypes.

Susceptibility of Solanum melongena L/Solanaceae to Drought at Different Growth Stages

“…All these causes disturbance in the assimilation mechanism that is directly involved in better growth and yielding. These results are similar with the findings of Anyia and Herzog (2004) and Chowdhury et al (2015), who observed decrease in plant biomass of cowpea underwater deficit throughout the experimental periods. The findings of this study are comparable with the study of Ashraf and Ashraf (2012); Orabi et al ( 2018), who reported a drought-triggered reduction in biomass production of maize and canola.…”

Dry Matter Production and Seed Yield of Soybean as Affected by Post-Flowering Salinity and Water Stress

“…Plants are unable to maintain metabolic activities, especially the turgidity of cell for normal growth under salt or water stress conditions, and that finally resulted yield reduction (Khan et al, 2016). Salinity or water shortage decreased pod number in pea (Duzdemir et al, 2009) and soybean (Chowdhury et al, 2015). Soybean is classified as a moderately salt sensitive crop (Katerji et al, 2003) and denoted as sensitive to drought stress, especially at the early reproductive stage (Westgate and Peterson, 1993).…”

Protein and Oil Contents of Several Soybean Genotypes under Normal and Drought Stress Environments at Reproductive Stage

“…Drought stress at reproductive stage reduced the soybean yield from 40 to 68% [1], [2], depends on August. This showed that the research took place in dry conditions even when the plants were in the reproductive stage.…”