Abstract
Crop plants are affected by different environmental changes which naturally affect their growth. In this study, physiological responses from the exposure of wheat plant were assessed as one of the most important food crops in the world for drought and exposure to UVB and their effect together. The response of plants to different pressures was different from individual stresses. In this study, nerves affected by drought stress and / or UV-B were treated for 4 days of treatment. They were evaluated in terms of roots, dry and dry weights, root height, height and leaf area, relative water content and electrolyte conductivity.
In general, double-stress (UV-B + D) appears to be less effective than any of the individual treatments and the stress effect of the drought is stronger than UV-B radiation. We also observed a strong increase in oxidative stress that indicates hydrogen peroxide (H2O2) and Malondialdehyde (MDA) in drought or UVB than cumulative stress in addition to antioxidant enzyme activities such as superoxide dismutase SOD and increased glutathione concentration more in wheat plants that have been subjected to cumulative pressures of UVB and drought more than individual pressures. According to our findings, it can be concluded that joint dehydration and UV-B provide resistance to more than one stress.