تاثیر پرایمینگ روی شاخصهای جوانه زنی بذر و فعالیت آنزیم های آنتی اکسیدانی گیاهچه نخود (.Cicer arietinum L) تحت تنش شوری.

In order to investigate the effect of priming on seed germination indices and antioxidant enzyme activity in chickpea seedlings under salinity stress and an experiment was conducted based on completely randomized design arranged in factorial with three replications at University of Mohaghegh Ardabili in 2023 with 3 replications. Treatments were four salinity levels (0, 50, 75 and 100 mM Derived from sodium chloride) and four levels of priming (without priming (control), hydropriming, priming with gibberellin (50 ppm) and salicylic acid (100 ppm)). The results showed that salinity stress reduced germination percentage (GP), daily germination coefficient (DGC), plumlue fresh weight (PFW). But seed priming with distilled water, salicylic acid, especially gibberellin improved these traits. Salinity increased the mean germination time (MGT), so that the highest (0.0387 seed per day) was observed at salinity of 100 Mm. The highest radicle fresh weight (RFW) (110.967 mg), radicle dry weight (RDW) (19.600 mg), plumule dry weight (PDW) (14.667 mg), seed length and weight vigor index (SLVI and SWVI) (12.041and 3.288) were observed in priming with gibberellin and control. The activity of catalase and glutathione enzymes reductase in priming with gibberellin were the application 66 and 42% higher than the control. The activity of peroxidase (enzyme in gibberellin treatment and salinity of 100 mM compared to the control showed an increase about 96%. Also. lowest amylase (2.1384 mg g-1 FW min-1) was obtained in salinity of 100 mM. In general, the results showed that gibberellin by stimulating antioxidant enzymes and neutralizing free radicals can reduce the harmful effects of salinity stress on some traits in chickpea seedlings and improve seedling growth. [ABSTRACT FROM AUTHOR]