Document Type : Articles
Authors
Department of Horticulture and Land Escaping, College of Agriculture and Marshes, University of Thi – Qar, Thi – Qar, Iraq
Abstract
This study was conducted at the College of Agriculture and Marshlands, Thi Qar University during the growing season of 2021 to study the effect of sodium chloride and fulvic acid and their interactions on some antioxidant enzymes of the leaves of date palm offshoots, a Nabayti cultivar, resulting from tissue culture. The study was implemented as a factorial experiment according to a Completely Randomized Block Design (CRBD) with two factors, the first is sodium chloride at four concentrations (0, 50, 100 and 150) mM, and the second is fulvic acid at three concentrations (0, 2.5 and 5) g L-1 with three replicates for each treatment. The results showed that the fulvic acid treatment at a concentration of (5 g L-1) achieved the highest averages of activity of peroxidase, glutathione peroxidase and glutathione reductase enzymes (10.738, 26.357 and 25.681) units g-1 min-1 respectively, compared to the control treatment. The sodium chloride treatment at a concentration of (150 mM) achieved the highest averages of activity of peroxidase and glutathione reductase enzymes (13,429 and 26,556) units g-1 min-1 respectively, while the concentration (10 mM) achieved the highest average of activity of glutathione peroxidase enzyme (26,277 units g-1 min-1) compared to the control treatment. The interaction treatment between (sodium chloride at a concentration of (150 mM) and fulvic acid at a concentration of (5 g L-1) achieved the highest averages of activity of peroxidase, glutathione peroxidase and glutathione reductase enzymes (14,580 and 28,267 and 27,623) units g-1 min-1 respectively, compared to the control treatment.
Keywords
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