Effects of Salinity Stress on the Growth, Physiology, and Yield of Soybean (Glycine max (L.) Merrill)

Nguyen Thi Linh 1 , Le Thi Tuyet Cham 2 and Vu Ngoc Thang 2

1Plant Cell Biotechnology, Institute of Biotechnology, Vietnam Academic of Science and Technology, Hanoi 122103, Vietnam
2Faculty of Agronomy, Vietnam National University of Agriculture, Hanoi 13100, Vietnam
Received: Dec 8, 2020 /
Published: Aug 10, 2021

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This study was conducted to evaluate the salt tolerance ability of two soybean cultivars under salinity conditions using a selection of growth and physiological parameters. Three weeks after germination, plants began being treated with either a 100 mM concentration of NaCl in Hoagland solution or a non-salinity (0 mM NaCl) solution. The results showed that the plant height, number of leaves, leaf area index, and shoot and root biomasses were significantly reduced under salt conditions. A similar tendency was observed in several physiological parameters (SPAD, Fv/Fm). Since all the salt-treated plants of the D8 cultivar were dead after 40 days under the 100 mM NaCl treatment, the yield of D8 could not be obtained, while the treated plants of the D140 cultivar experienced a marked decrease in yield compared to the control plants. In this study, we identified that the D140 soybean cultivar had a better salt tolerance than the D8 soybean cultivar at a 100 mM NaCl concentration.

Keywords: Growth, physiology, salinity, soybean, yield

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How to Cite
Linh, N., Cham, L., & Thang, V. (2021). Effects of Salinity Stress on the Growth, Physiology, and Yield of Soybean (Glycine max (L.) Merrill). Vietnam Journal of Agricultural Sciences, 4(2), 1043-1055. https://doi.org/10.31817/vjas.2021.4.2.05


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