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Vliv kombinace biouhlu a zinečnatých nanočástic na rostliny kukuřice seté kultivovaných v in vitro podmínkách
 Szomolaiová, Erika
Combined application of zinc oxide nanoparticles (ZnO NPs) and biochar could be a perspective tool for enhancing plant viability and mitigating a large scale of stresses in crops. To investigate effect of different concentrations of ZnO NPs (0, 50, 100 and 1000 mg/L), biochar, and their combination on corn plants (Zea mays L.), in vitro experiment took place. Zinc uptake in form of zinc NPs and possible effect of biochar on zinc uptake and accumulation were determined by atomic absorption spectrometry. A positive correlation between ZnO NPs concentration and zinc content in shoots was identified. There was no significant difference observed in plants treated with biochar. Physiological state of plants was evaluated by spectrophotometric analysis of photosynthetic pigments and secondary metabolites. The most significant effect was observed in content of phenolic compounds that increased with increasing ZnO NPs concentration. On the contrary, presence of biochar resulted in significant decrease (p < 0,05) of polyphenols.
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