Ascorbic acid enhances growth and dualex parameters in Arachis hypogaea L. under salt stress

Salt stress limits crop productivity in arid and semi-arid regions, posing a significant challenge to agricultural sustainability. This study investigates the potential of ascorbic acid (AA) to alleviate the harmful effects of sodium chloride (NaCl) in Arachis hypogaea L. by applying AA concentrations of 0, 100, 200, and 300 ppm and NaCl levels of 100 and 200 mM under controlled conditions. Results showed that the application of 300 ppm AA under 200 mM NaCl notably mitigated salt-induced reductions, enhancing stem and root lengths by 33% and 14% and increasing stem fresh and dry weights by 67% and 39%, respectively. Comparative analysis showed a 3% decrease in plant temperature, a 56% increase in leaf area, and a 59% reduction in malondialdehyde, underscoring AA’s protective effects. Although not all measured parameters responded significantly to AA under salt stress, these findings highlight the compound’s potential to counteract growth reductions in A. hypogaea, demonstrating its value for sustainable agricultural practices under saline conditions.