Results of old roses introduction at M. M. Hryshko National Botanical Garden, NAS of Ukraine

Purpose. To evaluate results of old garden roses varieties introduction based on the analysis of their decorative pro­perties and economic characters. Methods. Field study, comparative analysis, generalization. Results. The collection of roses at M. M. Hryshko National Botanical Garden (the city of Kyiv) was analyzed. A comparison was drawn between their gene pool and the world collection of roses. After collection screening, 22 old varieties were found at M. M. Hryshko National Botanical Garden and described. Their decorative pro­perties, economic characters and winter hardiness were eva­luated, the final result ranged from 81 to 100 points. Evalua­tion of winter hardiness that was based on the records of shoot damage degree in the field during the winter showed that in Kyiv conditions 13 cultivars were exceptionally resistant to frost, the other 9 appeared to be frost-sensitive. Conclusions. As follows from the analysis of decorative va­lues, economic characters and winter hardiness, 12 varieties of old roses such as ‘Cardinal de Richelieu’, ‘Commandant Beaurepaire’, ‘La Reine’, ‘Louise de Odier’, ‘Madame Plantier’, ‘Maiden’s Blush’, ‘Marie Baumann’, ‘Mousseuse Rouge’, ‘Persian Yellow’, ‘Poppius’, ‘Reine des Violettes’, ‘Versicolor’ were found to be perfectly suitable for landscaping.