Effect of priming on germination traits and antioxidant enzymes of pumpkin (Cucurbita pepo L.) seeds with different vigor under drought stress

In order to investigate the effect of priming on aspects germination aged pumpkin seeds under drought stress, a factorial experiment was conducted based completely randomized design with four replications in laboratory. Treatments included aging (control, 85% and 75% control germination), stress (0, -0.75 -1.5 MPa), hydro, gibberellin, GR24, benzyl aminopurine spermidine). Results mean comparison showed that lowest percentage (43.6%), protein (0.82 mg.g-1Fw), radical length (RL, 9.24 mm), plumule (PL, 1.19 relative water content (RWC, 35.5%), carotenoid (1.253 catalase (CAT, 7.03 µmol.gmin-1.mgprotein-1), peroxidase (POX, 47.72 µmol.gmin-1.mgprotein-1) superoxide dismutase activity (SOD, 53.48 mmol.gmin-1.mgprotein-1) were related treatment an intensity MPa absence priming. Also, malone dialdehyde (MDA, 3.75 mmol.g-1Fw) proline (1.573 µg.g-1Fw) obtained by spermidine. The highest (98.03%) (9.54 mg.g-1Fw) gibberellin treatment, RL (15.73 mm) PL (4.26 GR24 hormone, RWC (83.64%), (6.277 CAT (40.44 µmol.gmin-1.mg protein-1), POX (95.71 SOD (131.68 protein-1) spermidine Non-drought conditions. MDA (32.42 (0.55 observed