Рост клонов плюсовых деревьев сосны обыкновенной, отобранных в Нижегородской области по смолопродуктивности

Abstract

The taxational indicators of clones of plus trees of Scots pine, selected by resin productivity, were studied in comparison with similar characteristics of plants, selected by linear parameters of the trunk. They are represented They are presented in the assortment of the forest seed plantation No. 10 in the Semenovsky forestry of the Nizhny Novgorod region, created in 1984 on a plot with the type of forest growing conditions — B2, and the type of forest — maynikovo-lingonberry pine. In the organization of the work, the principle of the only logical difference was observed, as well as the requirements for the typicality, suitability and expediency of the experience. As a test marker for checking the purity of the clonal composition of the plantation, the value of the angle of attachment of the first-order lateral branches to the trunk was used. The height and diameter of the trunk are taken into account in 571 trees with a continuous list. The distribution of the average values of the analyzed indicators in the vegetative offspring of plus trees compared with each other is not uniform. The highest height (16,70 ± 0,43 m) observed in clones of the K-011 plus tree selected by resin productivity is 2,65 m or 1,19 times higher than the lowest value (14,05 ± 0,44 m) inherent in clones of the K-113 plus tree selected by the same criteria, and 2,02 m or 1,14 times higher than the lowest value (14,23 ± 0,31 m) inherent in clones of the K-171 plus tree selected by the same criteria taxational indicators of the trunk. Differences in the taxational indicators of clones in the group of plus trees distinguished by resin productivity, as well as in the group of trunks distinguished by characteristics, correspond to the level of significant ones, which indicates the specificity of their genotypes. The degree of similarity of the plus trees in terms of trunk parameters is not the same, which indicates a different level of individual non-identity of each of the plus trees in relation to the others in their considered population.