Effect of Zinc Sulfate and Sodium Chloride Stress on Two Rootstock of Qazvini Pistachio and Badami Zarand in Greenhouse Conditions

In order to study the characteristics of two cultivars of pistachio rootstocks, Zarand and Qazvini, under the influence of zinc and sodium chloride stress, a factorial experiment was conducted in the form of a completely random design with three replications in the research green house of Qom municipality during the years 2017-2018. With three repetitions in Qom. The root system of the seeds was fed a 50% solution of Hogland. The seedlings were exposed to four salinity levels of zero (control), 5, 10 and 15 dS/m, and three zinc levels from sulfate source (ZnSO4.7H2O) including zero (control), 1 and 5 uM. The results showed that salinity treatment of 15dS.m reduced seedling height, wet weight of leaves, calcium molar fraction and sulfhydryl groups. By increasing the stress level of sodium chloride, decrease in potassium to sodium ratio however, ion leakage, ascorbate peroxidase and catalase activity increased. 5uM treatment of zinc sulfate increases wet leaf weight, seedling height, and low molecular weight calcium concentration of sulfhydryl groups in the root and ion leakage reduction occurred. The results showed that the root tissue of Qazvini compared to Badami zarand the concentration of sulfhydryl groups and the ratio of potassium to sodium are higher and there is less ion leakage. Accordingly, the Qazvini rootstock is more resistant to oxidative stress sodium chloride.