Effect Of Adding Sulfur And Glutathione On Some Biochemical Characteristics Of Leaves Of The Tissue Date Palm (Phoenix Dactylifera L.)Berhi Cultivar Under Heat Stress

Abstract

A study was conducted on the effect of heat stress on some biochemical characteristics of the leaves of the tissue date palm variety Berhi and the role of adding sulfur (S) and spraying with glutathione (GSH) in alleviating the damage from heat stress. Five-year-old palm trees of approximately equal sizes were selected and planted in a private orchard south of Basrah Governorate, Iraq. And conducted the same service operations of fertilization and watering.The following treatments were applied to date palm trees, as agricultural sulfur was added at a concentration of (0, 1, and 2) kg/tree, and glutathione at a concentration of (0, 100, and 200) mg/liter as well as their interactions. The results showed that the highest values with a significant effect for the traits (glutathione and chlorophyll) and the lowest value for a significant decrease in the traits (proline, carbohydrates, hydrogen peroxide and MDA) was for treatment (2 kg S x 200 mg/L GSH) recorded (45.92 μmol g-1 and 6.38 mg 100 g-1). and (4.51 μmol g/g, 10.66 mg/gm, 0.62 μmol g, and 1.94 nmol/gm), respectively, compared with the control treatment that recorded (40.10 μmol g/g and 3.36 mg/gm), and (11.19 μmol g/g, 14.02 mg/gm and 1.06 μmol/g. g and 4.27 nmol/g) respectively for the previous treatments. The results of the current study showed that the addition of sulfur and glutathione helped reduce the damage caused by heat stress and improve biological processes and growth.