The current state of the collection fund of the Laboratory of Ornamental Plants of the Russian Academy of Sciences and the main criteria for the formation of large collections in it’s composition

Collection fund of the Laboratory of Ornamental Plants (LOP) MBG RAS has been in existence since 1947. Currently, it includes ornamental perennials from 221 genera and 57 families (1039 species and varieties, as well as 5047 varieties and garden forms). The current policy of forming collections is mainly aimed at creating large and/or original collections. The purpose of the present work is to study the quantitative and qualitative characteristics of the modern collection fund LOP MBG RAS, as well as the structural features of large collections in its composition. The most widely used methods in the introduction studies are the ecological-phytocenotic method and the method of generic complexes. The structure of the species part of the collection fund of the LOP is dominated by representatives of the flora of Europe, Asia and North America, since these regions are traditionally considered the most promising donors of material for the introduction of ornamental plants. The predominant ecological groups in its composition are forest, steppe and meadow species. When forming varietal collections, various approaches are implemented. Domestic breeding achievements dominate the Syringa, Lilium and Phlox collections. The collection of the genus Paeonia is aimed at creating a sample of foreign varieties that represent the history of culture selection. The history of culture selection in the USSR is most fully presented on the basis of the Clematis collection. The main stages of microevolutionary development of culture are demonstrated by the example of the genera Astilbe and Iris. The aspect of preserving retro varieties is most fully implemented on the Hemerocallis collection. The selection of a promising assortment for the conditions of the region is the main direction of expanding the collection of the genus Rosa. The aspect of selecting the most promising early-flowering varieties in crops with late flowering dates is most successfully implemented for Dendranthema and Symphyotrichum. The Hosta and Tulipa collections are focused on the selection of a range that is promising for the conditions of the central part of Russia, reflecting the morphobiological diversity of the culture. For breeding purposes, the resources of the Dahlia, Astilbe, and Iris collections are used.

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