STUDY OF OXIDATIVE ENZYMES IN MANY GENOTYPES OF (Zea mays L.)

The aim of this study was to evaluate the activity some oxidative enzymes in three genotypes maize namely (Baghdad, 5018, Sara) under sowing dates: (26July, 4August and 12August) denote (D1, D2 D3). A field experiment conducted at College Agricultural Engineering Sciences, University Baghdad/Al- Jadriya for fall season 2021- 2022, factorial using randomized blocks (RCBD) with replicates. Significant differences were found among number grains row, kernels ear. results showed that superiority genotype (Baghdad) characteristic Tasseling Silking flowering 50%, plant yield averages 58.89d, 62.89d 164.6g, respectively. While (Sara) superior weight 100 kernels, an average 27.34g. Genotype (5018) gave highest value Catalase (CAT) Peroxidase (POD) enzyme, which 2.16 u/mg 0.51 u/mg, respectively, while Superoxide dismutases (SODs), 50.15u/mg (D1) increase most traits averages, especially (50% tasseling 65.00d),(50% 68.00d),(weight reached 26.91g) (POD enzyme 0.56 u/mg). (D3) 162.1g, CAT 2.54u/mg SOD 57.34u/mg.