Introduction and selection of the genus of <i>Astilbe</i> in the Main Botanical Garden named after N. V. Tsitsin of the RAS

Abstract

The Laboratory of Ornamental Plants of theof the Main Botanical Garden named after N. V. Tsitsin of RAS has collected a very representative collection of representatives of the genus Astilbe , which includes 132 varieties and 8 natural species.The collection contains all geographical groups of this genus that grow in temperate climates. At the first stage of collection, the main task was to include historical varieties that reflect the various stages of selection. We managed to collect a unique variety of varieties that reflects the breeding achievements of the vast majority of breeders of this crop and all known breeding centers. Special attention was paid to the creation of separate complexes of varieties belonging to both individual breeders and breeding centers. The result of the first stage of work was the creation of a collection of varieties that reflects the history of breeding culture over a 120-year period. Currently, selection work has begun on the basis of the collection. One of the directions of selection is to obtain high and early flowering forms of Astilbe . Currently, two hybrid samples have been selected, which are promising for use as a variety due to their decorative characteristics. Crosses are also carried out within the natural species Astilbemicrophylla and Astilbebiternata , which were previously little used in breeding and have valuable decorative features. Since the beginning of selection, the principle of selecting varieties for inclusion in the collection Fund has changed. Now the main principle of selection is to include varieties with valuable characteristics that can be used in breeding work.