INFLUENCE OF IRON NANOPARTICLES ON THE GROWTH OF SCOTTEN PINE SEEDLINGS (PINUS SYLVESTRIS L.) AND OAK OAK (QUERCUS ROBUR L.)

The paper presents the results of a study of the effect of iron nanoparticles on the development of Scots pine ( Pinus sylvestris L.) and English oak ( Quercus robur L.) seedlings growing in the South Cis-Ural zone. It has been established that the morphobiological response of seedlings to the action of Fe nanoparticles has a species specificity. In pine seedlings, the presence of Fe nanoparticles at a concentration of 100 mmol / l had a toxic effect on the growth of Scots pine seedlings. The concentration of Fe nanoparticles 25 and 6.25 mmol / l stimulated the growth of Scots pine seedlings. With a nanoparticle content of 25 mmol / l, an increase in the length of the main root by 22.5 mm (23.1%). The number of adventitious roots in the experimental group, in comparison with the control, increased by 1.5%, the length of adventitious roots - by 10.8 mm (14.4%). Found that the seedlings of pedunculate oak are more resistant to the toxic effects of iron nanoforms. Morphometric parameters of seedlings of pedunculate oak in the experimental, as well as at a concentration of 100 mmol / l differed from those in the control group insignificantly, within 1%.