Influence of different forms of iron on the morphobiological indicators of Pinus sylvestris

Abstract

The wide distribution of iron in the environment of various forms of iron makes it relevant to study the characteristics of their influence on plant growth. In the present paper, the growth features of Pinus sylvestris – Scots pine were studied - during the cultivation of stratified seeds in a medium containing different forms of iron. It was established that the cultivation of pine seeds in a medium containing 0.1 M of iron in any form, inhibits the development of the root system. When cultivated in the environment containing iron nanoparticles at a concentration of 6.25 mmol / l, this led to a decrease in the root length to 3.71 ± 0.06 mm. On the contrary, the presence of iron nanoparticles in the medium for the cultivation of pine caused an increase in the length of the main and adventitious roots, as well as the number of adventitious roots. The content of iron microparticles in the medium for the cultivation of pine caused only a decrease in the length of the main root and adventitious roots. At the same time, at concentrations from 0.39 to 25 mmol / l, an increase in the number of adventitious roots occurred, which indicates compensatory reactions.