The article studies the influence of different fertilizing products on vigor and germinating ability of Scots pine and common spruce seeds. The research involved the following products: Humate+7, Potassium humate “Sufler”, Biohumus, Agrostimul VE, Emistim-R, Gibberellin, Etamon. The soaking of seeds in products leads to an increase in vigor, on average, between 31 and 37.0 % for Scots pine and between 5 and 13.0 % for common spruce. The germinating ability of Scots pine and common spruce seeds increases, on average, by 16.0 and 17.0 % correspondingly. Among all the products the least effective was “Etamon”. In its case, the germinating ability of seeds in laboratory conditions was 53.0 % which is 10.0 % lower than in control. The treatment by stimulators significantly influenced the development of a root system. The intensive root growth happens in the cases of “Gibberellin” and “Humate+7” – 4.4 and 5 cm corresponding to the variants of the experiment. The pre-sowing treatment positively increases the length of germs. In this case, the best results were achieved with “Gibberellin” and “Biohumus” products that gave the increase of 1.7 and 1.5 cm respectively.

The paper presents the results of an experiment on the propagation of aspen clones (Populus tremula L.) of diploid and triploid genotypes resistant to pith rot by methods of microclonal reproduction and their introduction into forestry production in the Republic of Tatarstan. The expediency of using this method for obtaining healthy aspen planting material has been substantiated, and the prospects for the reproduction of clone No. 35 with a triploid genotype have been shown.