Now conservation of biodiversity is a relevat topic aimed at increasing phytodiversity in both open and closed ground conditions on the basis of botanical gardens The study of the botanical gardens collections is associated with the investigation of new plants that can be used as a new source of antioxidants and objects of hobby and relaxation for the ever-intense nervous system of modern people. Family Gesneriaceae Dumort. is an inexhaustible source of such objects. The study purpose is comparison of the family representatives that are similar in terms of morphological features and ecological needs, and differ in geographical origin, analyzing their adaptive capabilities and identifying the most resistant species and varieties. Observations of representatives of Gesneriaceae were carried out from 2019 to 2022 on the basis of the collection of the stock greenhouse of the Laboratory of Tropical and Subtropical Plants of the Botanical Garden of DNU (48°26’7″ N, 35°2’34” E, Dnipro, Ukraine). The research objects were 2 species and 22 varieties of Streptocarpus Lindl., 4 species and 2 varieties of Primulina Hance. The qualitative state and development phases were observed in protected soil conditions. Life forms are listed according to the Catalog of Plants of the Botanical Garden of the National University of Ukraine . The systematic position was determined according to the APG IV classification . The taxonomy and names of plant species are given according to the Catalog of life checklist . According to new taxonomy, the genus Saintpaulia H. Wendl. now joined the genus Streptocarpus Lindl. As a result of the research, it was revealed that among the most decorative representatives of the Gesneriaceae family in the collection of the botanical garden of the DNU, grassy perennials with a short stem or rosette occupy a significant place. Namely, species and varieties from the genus Streptocarpus and the genus Primulina Hance. Plants have similar life forms and ecological needs, occupy the same ecological niches in Africa and Madagascar (Streptocarpus ) and Southeast Asia (Primulina). The greatest resistance to modern conditions of keeping plants of protected soil while maintaining maximum decorativeness is demonstrated by species and varieties from the genus Primulina – representatives of the flora of Southeast Asia. Thus, the adaptive capabilities of 4 species and 2 varieties of Primulina turned out to be better than those of other representatives of the Gesneriaceae collection in general and in particular among rosette and short-stem species.
Article is in Ukrainian.