Comparison of different treatment methods of salicylic acid on some physiological traits of white bean under salinity stress

Abstract

It has been shown that salicylic acid (SA) acts as an endogenous signal molecule responsible for inducing biotic and abiotic stress tolerance in plants. The effect of three application methods (Soil, Foliar and Priming) and four salicylic acid concentrations (0, 0.1, 0.5 and 1.0 mM) on chlorophyll a, b and total chlorophyll, carotenoids, proline, protein and soluble sugars of NaCl (4 ds/m) stressed white bean (Phaseulus vulgaris L.) was investigated. The results showed that the effect of applied concentrations and application methods on chlorophyll a and total chlorophyll, proline, protein and soluble sugars were significant. The interaction of concentrations and application methods used was significant on protein, proline and soluble sugars. According to the results, the greatest impact was belonged to the soil treatment which was not significantly different from priming. Among applied concentrations, the concentration of 0.1 and 0.5 mM were the most effective and the concentration of 1 mM was not significantly different from the control.