Abstract:
This study was carried out to determine the physiological effects of ZnO nanoparticles, which have been used for different purposes in recent years, on peanuts (Arachis hypogaea), which are ecologically and economically important agricultural plants. In the study, the effects of different ZnO concentrations (0, 5, 25, 50, 100 and 250 mg/L) on germination, growth and development and some physiological parameters of peanut were determined. Final germination rates at 100 and 250 mg/L ZnO concentrations were significantly reduced compared to control. Adverse effects of high concentrations applied on the growth and development of seedlings were determined. The protein content of the seedling tissues decreased significantly at high concentrations. While the total carbohydrate content increased at low concentrations compared to the control, it was determined that it decreased at high concentrations. The changes in the amount of phenolic compounds and non-protein sulfidriyl groups showed that high concentrations of ZnO cause stress. In addition, it has been clearly shown that increases in the amount of hydrogen peroxide, which are reactive oxygen species, and malondialdehyde, which is an oxidative stress indicator, cause oxidative stress in the peanut tissues.
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