Comparative effects of herbicides Topic and Granstar on oxidative stress in leaves of cereals

Abstract

Herbicides Granstar (Sulfonylurea class) and Topic (Aryloxyphenoxypropylate class) in short-term action and longterm aftereffects induce oxidative stress in leaves of cultural cereals – maize (Zea mays L.), rye (Secale cereale L.) and wheat (Triticum aestivum L.). The highest intensity of oxidative stress as measured by the rate of generation of superoxide anion (О2 – ) is found in plants treated with high doses of xenobiotics (300 μg / L and 10 μL / L for Granstar and Topic, respectively). Comparison of the herbicides showed a stronger effect on the oxidative stress in plants treated with Topic (acute effect) and Granstar (long-term aftereffects). The most vulnerable target for the herbicide study was maize, the most sustainable – winter rye