Effect of Salicylic Acid Pretreatment on Seedling Growth and Antioxidant Enzyme Activities of Sunflower (Helianthus Annuus L.) and Linseed (Linum Usitatissimum L.) Plants in Salinity Conditions

Salinity has become a problem all over the world in agricultural areas. Plants develop a defense mechanism to increase various antioxidant enzyme activities to resist salt stress. In addition, the effects of stress are tried to be reduced with various applications. One of these applications is the application of salicylic acid (SA). However, the effects of SA application vary depending on the plant species and cultivar. In this study, the seeds of sunflower and linseed plants were primed for 4 hours with different concentrations of SA doses 0 (control) (SA1), 0.25 mM (SA2), 0.50 mM (SA3), 1.00 mM (SA4) priming. In the laboratory, the seeds were permitted to develop in petri dishes with different salt 0 (control) (S1), 50 mM (S2), 100 mM (S3), 150m M(S4) concentrations for 14 days. As a result of the study, it was determined that SA had a positive effect on both morphological and chemical properties in both plant species grown under salt stress.