PJB-2017-645
CHANGES IN OXIDATIVE STRESS IN MAIZE PLANTS DURING HERBICIDES APPLICATION
SONGÜL ÇANAKCI GÜLENGÜL
Abstract
In the present study, the physiological and biochemical effects of 2.4-D (0, 100, 300, and 1000 μM) on 15-day-old seedlings of three maize varieties (Zea mays L., cv. Saccharata, cv. Danona, cv. Advanta 2898) were investigated. Hydroponic method was preferred from root in all applications performed on seedlings. Compared to controls; delays in growth parameters (root-shoot elongation, dry weight/fresh weight) of seedlings and pigment (cl a+b, carotenoid) loss in leaves were determined. In addition, MDA content increased/decreased, PRL content and GSH/GSSG ratio elevated/elevated, SOD activity decreased/increased, and CAT activity decreased/ decreased in root/leaf of seedlings. While % ratios of fatty acids in leaf had exceptional increase and increase for linolenic acid, palmitoleic acid and stearic acid, they decreased for linoleic acid and palmitic acid. Generally, inhibitive effect increased too in parallel with the increasing dose of 2,4-D (1000 μM). Danona and Advanta 2898 which is the hybrid variety were found to be more tolerant to 2,4-D than Saccharata the standard variety.
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