Effects of Exogenous Salicylic Acid on Seed Germination and Seedling of Elymus Sibiricus under NaCl Stress
This study aimed to investigate the effects of exogenous salicylic acid(SA)on seed germina-tion and seedling growth of Elymus sibiricus under NaCl stress.The study comprised five groups,includ-ing the control group(distilled water,CK)the exogenous salicylic acid(SA)treatments at concentrations of 0.25 mmol/L,0.5 mmol/L,1.0 mmol/L,1.5 mmol/L,and 2.0 mmol/L.The results showed that exogenous SA treatments at concentrations of 0.25,0.5,and 1.0 mmol/L alleviated the inhibitory effect of salt stress(150 mmol/L)on E.sibiricus.Comprehensive evaluation results revealed that the addition of exogenous SA at 0.25 mmol/L had the optimum effect(P<0.05).Under this concentration,seed germi-nation energy,shoot-to-root ratio,soluble protein content,and peroxidase(POD)activity of E.sibiricus increased by 32.58%,21.15%,69.48%and 81.09%,respectively.Additionally,the malondialdehyde(MDA)content decreased by 73.40%.In conclusion,exogenous SA can maintain the normal growth of E.sibiricus under NaCl stress by increasing the activity of antioxidant enzymes and eliminating the oxida-tive damage caused by reactive oxygen species(ROS).This study provides technical reference for the pro-motion and ecological application of E.sibiricus in salinized soil areas.
万方数据
维普
