The Effects Evaluation of pretreatment Wheat Seeds by using Salicylic acid in the presence of Polyethylene Glycol (PEG)

Salicylic Acid known as a Signal Molecule pretreatment, has a key role in the defensive responses to both environmental and non environmental tensions and it is shown that suitable density of foreign Salicylic Acid will cause increase in efficiency of antioxidant plant system . In this research, from pretreatment 100 micromole per liter and for 2 days long , Salicylic Acid in treatment plants and under Dryness Tension caused by the (PEG) 15.4% Polyethylene Glycol (PEG ) in hydroponic environment , was used and the role of Salicylic Acid (SA) to some biochemical responses was studied and checked , too. The data of this study showed that Salicylic Acid (SA) pretreatment caused a meaningful decrease in Lipid per oxidation and increase in membrane resistance index in plants under dryness tension. In plants under tension, caused the increase in the amount of Proline and chlorophyll as well. It seems that safeguards effects of Salicylic Acid (SA) in tension conditions may be related to the ability of this material confronting Reactive oxygen species (ROS) and the reduction in Oxidative damages and the increase amount of chlorophyll.