Effect of nanosized forms of iron-containing compounds on the growth characteristics of raphanus sativus seeds

Abstract

This work presented the experimental data on the change in the characteristics of seed germination of Raphanus sativus radish after their treatment with sols of iron-containing compounds nanoparticles. For research, samples of nanoparticles of the following compounds were synthesized: Fe(OH)3, KFe[Fe(CN)6], FePO4. The iron concentration was 5.66 · 10–2 mol/l in all samples. The micelle charge and average hydrodynamic radius were determined by dynamic light scattering and electroacoustic spectroscopy, respectively. The largest average hydrodynamic radius of particles, according to the results of the data obtained, was found in the FePO4 sample, and the smallest – in Fe(OH)3. It was found that all iron-containing compounds have a positive micelle charge. The seeds of Raphanus sativus radish were treated for 10 min, and then they were placed in a thermostat at room temperature for 3 days. A control sample of Raphanus sativus radish seeds was treated in distilled water. The following parameters of seed germination were estimated in the study: germination percentage, germination ability, and degree of seed damage. The negative influence of sols on seed germination was noted. The most inhibitory effect was exerted by a sample of KFe[Fe(CN)6] nanoparticles, and the least - by a Fe(OH)3 sample. Deterioration is caused by the direct toxicity of nanoparticles and their induction of the development of molds on the seed substrate.