Потенциальные возможности применения некоторых сортов рода Hosta L. из коллекции лаборатории декоративных растений Главного ботанического сада РАН на объектах городской ландшафтной архитектуры

Abstract

According to one of the modern trends, botanical gardens located within the city limits should be their structural part not only in the territorial, but also in the functional aspect. Therefore, the purpose of the work is a scientifically based selection of representatives of the genus Hosta L. from the collection of the laboratory of ornamental plants of the Main Botanical Garden of the Russian Academy of Sciences (MBG RAS) — cultivars that are promising for use in urban landscape compositions and the development of various variants of flower compositions. The object of research is a sample of representatives of the genus Hosta from the collection of the laboratory of ornamental plants of the MBG RAS, containing 23 names. The composition of the sample population is formed on the basis of taking into account four criteria: 1) stability in culture; 2) belonging of varieties to different garden groups; 3) sufficient prevalence of the variety; 4) high coefficient of vegetative reproduction. Statistical processing of experimental data was carried out in accordance with classical methods using the program «STATISTICA Base». The development of models of flower beds is based on the methods and techniques generally accepted in the design of landscape compositions using the AutoCAD program. In the course of the conducted research, the selection of promising representatives of the genus Hosta for urban gardening was carried out and eight variants of flower compositions were proposed (rockery, 2 groups and 5 mixborders). It was found that in all the representatives of the genus Hosta recommended for use, the influence of genetic features dominates in the structure of variability of the studied quantitative characteristics, which provides a high probability of preserving the planned structure of flower compositions during the operation of the landscape architecture object.