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VOL. 7, ISSUE 5 (2025)
Life under salinity stress: Physiological insights into Soybean response to exogenous growth regulators under saline irrigation condition
Authors
Ram Priyanka D, UK Kandoliya, Tejasvini I Vaghela, Binal Bhuva, HP Gajera
Abstract
Salinity stress is one of the most critical abiotic challenges affecting crop growth and productivity worldwide. High salt concentrations in soil or irrigation water disrupt osmotic balance, impair cellular metabolism, and cause significant yield losses in sensitive crops such as soybean (Glycine max L.). The present study investigated the physiological responses of soybean seedlings irrigated with saline water (6 dS m-¹) and treated with exogenous plant growth regulators—gibberellic acid (GA3), salicylic acid (SA) and indole acetic acid (IAA) individually and in combinations. The physiological traits studied included relative water content (RWC), membrane stability index (MSI), leaf pH and stomatal morphology at 25 and 35 days after sowing (DAS). Results revealed that salinity stress significantly reduced RWC and MSI, increased leaf pH and altered stomatal morphology. Foliar application of growth regulators alleviated these negative effects, with the combined treatment of GA3 @100 ppm + SA @100 ppm + IAA @500 ppm showing the highest improvement in physiological traits under saline irrigation. These findings highlight the potential of growth regulators in improving the resilience of soybean under salt stress, offering a promising strategy for sustainable crop management in saline-prone areas.
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Pages:56-61
How to cite this article:
Ram Priyanka D, UK Kandoliya, Tejasvini I Vaghela, Binal Bhuva, HP Gajera "Life under salinity stress: Physiological insights into Soybean response to exogenous growth regulators under saline irrigation condition". International Journal of Agriculture and Plant Science, Vol 7, Issue 5, 2025, Pages 56-61
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