Introduction of new species for extension of the period of decorative effect of flower collections
The existing diversity of cultivars of each flower culture was created by breeding with a part of the species diversity of the correlative genus. As a result, the timing of cultivars' flowering, determining the duration of their decorative effect, were inherited from these original species. With the introduction of species that did not participate in the breeding of cultivars included in the collection of the Nikitsky Botanical Gardens, the species with earlier or later flowering periods are of particular value in extending the period of decorativeness of flower cultures. So, times of flowering of lilac cultivars on the southern coast of the Crimea (SCC) fall on the period from the second period of April to the second period of May. Introduction of late flowering species of Syringa josikaea J. Jacq. ex Rchb and S. pekinensis Rupr., blooming from the second period of May to the end of the first period of June and interspecies hybrid S. × chinensis Willd., starting to bloom 5-7 days earlier than the collection cultivars, allowed to increase the total flowering period of the lilac collection. Garden roses under the conditions of the SCC have a very long period of decorative effect (from May to the end of December), which was further extended as a result of the introduction of species Rosa banksiae W. T. Aiton and R. fortuneana Lem., starts blooming in the second period of April. Flowering of clematis cultivars begins in early May and lasts till September. The two introduced early flowering species: Clematis armandii Franch. C. montana Buch.-Ham. ex. DC. and one form C. montana var. rubens start flowering in the first - third period of April. Introduction of late flowering species C. peterae Hand.-Mazz. allowed to increase the total duration of flowering of the clematis collection until the first period of November. The collection of hybrid iris (Iris × hybrida hort.) begins flowering in the first period of April and ends it in the first period of June. However, the introduced species of I. unguicularis Poir. blooms under the conditions of the southern coast in December and January, which allows us to create an additional period of decorativeness of the iris collection. Thus, the introduction to the collection of garden roses, lilacs, clematis and iris the species and interspecies hybrids with very early or very late flowering periods has significantly extended the overall period of decorative effect of these collections.
Zykova, V.K., Plugatar, Yu.V., Zubkova, N.V., Klimenko, Z.K., Plugatar, S.A. and Ulanovskaya, I.V. (2020). Introduction of new species for extension of the period of decorative effect of flower collections. Acta Hortic. 1288, 215-218
lilac, clematis, iris, rose, cultivar, flowering period