The rose genetic collection of the M.M. Gryshko National Botanical Garden, National Academy of Sciences of Ukraine (Kyiv, Ukraine) is the largest and most systematically studied Rosa collection in the country. Established in 1946 on the basis of planting material obtained from Germany as part of post-war reparations, it has expanded significantly over eight decades and today comprises 18 wild species and over 650 cultivars of various origins. The collection serves as a long-term ex situ conservation resource and provides a basis for studies of morphological traits, winter hardiness, drought tolerance and resistance to major pathogens. Monitoring has identified cultivars with high resistance to powdery mildew, black spot and rust, while morphological analyses support taxonomic and breeding research. The collection also includes historically important heritage cultivars and 12 original Ukrainian cultivars registered in the State Register of Plant Varieties Suitable for Distribution. Seeds of wild species are preserved in the seed laboratory, and a specialized seedbank is planned for long-term conservation. Extensive national and international collaborations contribute to the continuous enrichment of the gene pool and support educational, scientific and outreach activities. The study highlights the scientific, cultural and conservation value of this unique Rosa collection and its importance for breeding programmes in northern Ukraine.
Rubtsova et al. (Thu,) studied this question.