The paper presents the results of retrospective analysis of the collection of Rosa ×hybrida hort. of the Donetsk Botanical Garden for the period from 1971 to 2025. A comprehensive assessment of the current state of collection is provided, and promising development trends are identified. Over the entire research period, a total of 620 cultivars were studied. The maximum varietal diversity (303 cultivars) was recorded in 1988. Currently, the collection contains 168 cultivars from 14 garden classes, including old and modern garden roses. The core of the collection is composed by roses of two garden classes: hybrid tea ones (37 %) and floribunda (18 %). Cultivars of foreign selection predominate. Domestic selection is represented by 9 cultivars. The dominant flower color is red (36.9 %). To replenish the collection with promising varieties, 145 cultivars (129 cultivars of foreign and 16 ones of domestic selection) undergo variety testing.

Prykhodko S.A., Makogon I.V., Papazova A.A.