Abstract
The article presents the results of the analysis of the cultivar composition of the Iris × hybrida hort. collection of Nikitsky Botanical Gardens according to bloom season and color classification. As a result of the analysis of phenological observations, the average long-term dates of the «beginning of flowering» phase in the conditions of the South Coast of Crimea were determined for all collection cultivars. The definition of the studied cultivars according to the bloom season within the garden groups into early flowering, medium flowering and late flowering has been carried out. Lists of cultivars by color classes are presented. The data obtained can be used in the practice of landscaping resort areas to create long blooming without a break compositions with the inclusion of Iris × hybrida hort. cultivars from various garden groups. The definition of Iris × hybrida hort. cultivars of NBS – NSC collection by color classes in accordance with the classification proposed by The American Iris Society was also carried out. Lists of cultivars by color classes are presented. The data obtained can be used by landscape architects to create flower arrangements in specific color spectrum in combination with companion plants.
Highlights
One of the main areas of work of botanical gardens is the preservation of biological diversity
The definition of cultivars by flower color classes is given according to the classification adopted by the largest and most authoritative community of garden iris growers in the world, The American Iris Society (AIS) [16]
The main parameter for various garden classifications in the world is the height of the generative shoot, as well as for some groups such parameters as the size of the flower and the blooming season are taken into account
Summary
One of the main areas of work of botanical gardens is the preservation of biological diversity For this purpose, in the Nikitsky Botanical Gardens – National Scientific Center (NBS – NSC), collections of ornamental flowering crops have been created, maintained and increased, on the basis of which introduction and breeding studies are conducted [1-3]. In the Nikitsky Botanical Gardens – National Scientific Center (NBS – NSC), collections of ornamental flowering crops have been created, maintained and increased, on the basis of which introduction and breeding studies are conducted [1-3] One of such collections is the collection of bearded garden iris (Iris × hybrida hort.) [4]. April is taken as the beginning of the warm period, the average monthly temperature of which is close to 10 ° C [11] Due to these factors, many ornamental flowering crops in the South Coast enter the blooming phase much earlier than in other, more northern regions of Russia
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