Abstract
Background. The relevance is based on the need to preserve the genetic diversity of rare and endangered Rosaceae plants that play an important role in ecosystems and are of value for agriculture, medicine, and ornamental gardening. Materials and methods. Nine plant species from the Rosaceae family listed in the Red Data Book of Kazakhstan served as the material for this study. Results. Accessions of 9 Rosaceae species were collected by plant collecting missions. The in vitro initiation and micropropagation techniques employing the Murashige and Skoog medium with added growth regulators was optimized for 6 species. Conclusion. The established in vitro collection of rare and endangered plants from the Rosaceae family is an effective tool for their conservation and reproduction. The applied techniques ensure long-term conservation of biodiversity and create opportunities for further use of genetic material for scientific and practical purposes.