Effect of Salinity on Physiological and Biochemical Parameters of Leaves in Three Pomegranate (Punica Granatum L.) Cultivars

Salinity is one of the most important abiotic stresses affecting crop yield. It to exploit pomegranates’ potential against salts because they are considered beneficial plants for human health due their antioxidants and often exposed severe salinity stress in field. Three pomegranate cvs. were chosen as model assessing impact different salt cultivation. The aim this study was evaluate physiological biochemical response three varieties (Punica granatum L.) (Wonderful, Ermioni, Grenada) under saline conditions. grown a sand/perlite substrate 1:1 ratio and, throughout experiment, irrigated with Hoagland nutrient solution, modified contain four concentrations (0, 25, 50, 75 mM) NaCl, KCl, K2SO4. At end we measured (a) carotenoids porphyrin leaves; (b) phenols flavonoids contents, antioxidant capacity (c) lipid peroxidation level; (d) leaf water potential; (e) proline concentration. Ermioni contained maximum concentration all salts. Furthermore, reductions chlorophyll carotenoid recorded cultivars. Grenada possessed lowest In conclusion, our results showed that salt-susceptible cultivar. treatment triggered enhancement sensitive cultivar, while no change level observed tolerant These data provide further support hypothesis mechanism exists excludes from roots cultivars, well an internal tolerance minimizes accumulation peroxides through higher content related osmoregulation membrane stabilization.