Decorative qualities of representatives of Magnoliaceae juss, introduced in the O.V. Fomin botanical garden

The purpose of the work was to find out the features of manifestation of the features of the decorative nature of the species of the Magnoliaceae Juss. on the example of plants from the collection of the O.V. Fomin Botanical Garden of the ESC "Institute of Biology and Medicine" on the climatic conditions of the Kiev metropolis. This article provides detailed study the 12 leaf-declining species of the Magnoliaceae. We studiedthe complex and seasonal decorativeness, estimated decorativeness, determined the total annual indicator of decorativeness, investigated theseasonal rhythm of plant development on the basis of phenological observations. Basic physiological indicators that were taken into account:budding, opening of flower and vegetative buds, leaf formation, flowering and fruiting. All species that were investigated undergo a full cycle of seasonal development: beautifully bloom, develop and form normally developed fruits and seeds in conditions of ex situ of the Botanical Garden. The species are divided into two groups according to the beginning of the growing season: medium (L. chinense (Hemsl.) Sarg., L. tulipifera L., M. stellata (Siebold & Zucc.) Maxim., M. tripetala L., M. officinalis Rehder & E.H. Wilson, M. denudata Desr., M. liliiflora Desr., M. kobus DC., M. soulangeana Soul.-Bod., M. salicifolia(Sieb. Et Zuss.) Maxim., M. obovata Thunb.) and late (M. biondii Pamp.); into three groups according to the dates of flowering relative to the seasons of the year: early spring (M. stellata, M. denudata, M. salicifolia, M. kobus), late spring and early summer (L. chinense, L. tulipifera, M. tripetala, M. officinalis, M. liliiflora, M. soulangeana, M. obovata), middle summer (M. biondii). The high decorative of studied species (their total annual decorative rate is 4 points) and their high adoptative ability to changes of environmental conditions are concluded. Thus, there is a necessary to extend the using of magnolias in landscaping of urban landscapes as climate forming plants.