The change of growth indicators of the oats Avena sativa under the influence of titanium dioxide and silicon dioxide nanoparticles

The research objective was the assessment of the influence of nanoparticles of titanium dioxide and silicon dioxide on growth indicators of the crop of oats. As materials of the research nanoparticles (NPs) which are most often used by production of consumer goods served: titanium dioxide (TiO2); silicon dioxide (SiO2) of production "Plasmotherm" (Russia). NPs phytotoxicity was defined on seeds and sprouts of the higher plant of Avena sativa, according to methodical recommendation (MP 2.1.7.2297-07). In the experiment intact seeds of oats which initial viability made not less than 80 % were selected. The assessment of the influence of nanoparticles was estimated on germination energy, mass of roots and sprouts, the length of the maximum back of the plants cultivated in Petri's cups for 3-7 days. It was defined that the most sensitive parameter to NPs of titanium dioxide was back length, EC50 value made 90 mg/l, it was succeeded to determine by the mass of roots and shoots only EC20 value - 11 and 12 mg/l, respectively...