Research Article

Salt Stress Effects Physiology Properties, Malondialdehyde and Proline Accumulation in Relation To Osmotic Adjustment Of Soybean [Glycine Max (L) Merrill]

Volume: 29 Number: 1 January 1, 2026
TR EN

Salt Stress Effects Physiology Properties, Malondialdehyde and Proline Accumulation in Relation To Osmotic Adjustment Of Soybean [Glycine Max (L) Merrill]

Abstract

This study evaluated the morphological, physiological, and biochemical responses of ten soybean (Glycine max L. Merrill) cultivars to three levels of salt stress (0, 3, and 6 dS m⁻¹) from seedling emergence to the V4 growth stage. Increasing salt concentrations significantly reduced plant height, fresh and dry weights, leaf area, relative water content, chlorophyll a, chlorophyll b, SPAD, and carotenoid levels. In contrast, relative membrane permeability (RMP), proline, and malondialdehyde (MDA) levels increased with salt stress. This study showed that there was a 0.821** positive correlation between salt stress and rmp with the increasing salt stress, besides the increasing leaf permeability significantly in the leaves of all cultivars had a negatively significant correlation relationship with other measured traits, because of oxidative membrane damage. Notably, cultivars with higher MDA and lower proline contents produced less biomass under stress, emphasizing the role of oxidative damage and limited osmoprotectant accumulation. These findings underline proline accumulation as a key indicator for selecting salt-tolerant genotypes and improving crop resilience in saline environments. Additionally, the variation in proline and MDA responses among cultivars suggests genotype-specific mechanisms of salt stress tolerance.

Keywords

Project Number

ZRF-21047

References

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Details

Primary Language

English

Subjects

Agronomy

Journal Section

Research Article

Early Pub Date

October 18, 2025

Publication Date

January 1, 2026

Submission Date

May 15, 2025

Acceptance Date

August 15, 2025

Published in Issue

Year 2026 Volume: 29 Number: 1

APA
Küçükkılııç, B., Canavar, Ö., & Gören, H. K. (2026). Salt Stress Effects Physiology Properties, Malondialdehyde and Proline Accumulation in Relation To Osmotic Adjustment Of Soybean [Glycine Max (L) Merrill]. Kahramanmaraş Sütçü İmam Üniversitesi Tarım Ve Doğa Dergisi, 29(1), 79-97. https://doi.org/10.18016/ksutarimdoga.vi.1699900


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