The effect of priming and aging on the growth indicators and activity of antioxidant enzymes in hybrid maize single cross 704

In order to investigate The effect of priming and aging on the growth indicators and activity of antioxidant enzymes in hybrid maize single cross 704 a factorial experiment was conducted based on a completely randomized design at the University of Mohaghegh Ardabili in 2021 with 3 replications. Treatments were aging (control, 7 and 14 days) and priming (control, hydro-priming, priming by gibberellin (20 mg / l) and salicylic acid (100 mg / l)). The results showed that aging decreased growth indicators including Radicle Length (RL), Plumule Length (PL), Seedling Length (SL), Radicle Dry Weight (RDW), Plumule Dry Weight (PDW), Radicle Fresh Weight (RFW), Plumule Fresh Weight (PFW) Seed Length Vigor Index (SLVI) and Seed Weight Vigor Index (SLWI), but types of priming, especially priming with gibberellin improved these traits. As compared to the control, the catalase, superoxide dismutase, and glutathione reductase activities increased respectively by 73%, 63%, and 21% after gibberellin treatment and 14 days of aging. The highest amount of peroxidase enzyme activity (1.797 units mg-1 protein) was related to gibberellin priming. In general, gibberellin pretreatment increased fragile corn seeds' growth indicators and antioxidant enzymes activities, and it can be used to enhance.aging compared to the control showed an increase respectively about 73%, 63% and 21%. The highest amount of peroxidase enzyme activity (1.797 units mg-1 protein) was related to gibberellin priming. In general, using gibberellin pretreatment strengthened weak corn seeds growth indicators and antioxidant enzymes and the treatment can be used to increase weak seed vigor.