Aim. Value of cultivated Corylus L. as a fruit, ornamental and oilseed crop with prospects for use in the food industry, feed production and pharmacy are grown under the hazelnut name, makes it necessary to improve the methods of conservation and reproduction of Corylus spp., which can be valuable sources of initial material for breeding. Involvement in a hybridization of the well-known cultivars of hazelnuts with Chinese hazel (C. chinensis Franch.) contributed to the cre- ation of several new cultivars, in particular ‘Sofiyivsky 1’ (‘Ukraine-50’×C. chinensis), Sofiyivsky 2’ (‘Dar Pavlenka’×C. chinensis), and ’Sofiyivsky 15’ (‘Garibaldi’×C. chinensis). However, in the process of studying the morphological features   of C. chinensis from the collection of NDP “Sofiyivka” and analysis of the effectiveness of its interspecific interbreeding with other Corylus revealed their differences from the data given in the literature sources, which initiated our research. Materials and methods. Study of species-specific features of C. chinensis, hybridization, progeny analysis, clonal selection, propagation of selected seedlings, and generalization of the observations were performed using commonly used methods. Results and discussion. Comparison of morphological features of the C. chinensis imported from the Berlin Botanical Garden (Botanischer Garten Berlin-Dahlem) and its vegetative descendants with descriptions and photos given in the online database founded by the Royal Botanic Gardens Kew (Great Britain), showed the similarity of features of leaves, bark, and trunk with incomplete similarity of the infructescence, its shape, and downiness. It may indicate a hybrid origin of the introduced plant (Corylus…, 2017). The obtained data related to the value of C. сhinensis in hybridization with hazelnut cultivars using its male parent contradict the literature data that report on successful hybridization in direct combinations of C. chinensis×C. avellana and the incompatibility of these species in reciprocal crossing. Conclusions. It was found that the studied C. chinensis plants of generative age generally correspond to the descriptions of the species given in scientific sources and the electronic databases “Plants of the world Online” and “World Flora Online” in their morphological characteristics. However, the identified certain discrepancies indicate the need to continue their study, and the study of the others obtained from native sources of C. chinensis representatives, cultivars, and numerous interspecific hybrids using molecular and genetic DNA analysis methods.

The analysis of domestic and world publications on the evolution of ornamental garden plants use from the ancient Egyptians, Greeks and ancient Romans to the “dark times” of the middle Ages and the subsequent Renaissance was carried out. It was made in order to understand the current trends of Green Urbanism and in particular regarding the diversity of floral and ornamental arrangements used in the design of modern interiors of public spaces. The aim of the article is to grasp current trends of Green Urbanism regarding the diversity of floral and ornamental arrangements used in the design of modern interiors of public premises. Cross-cultural comparative methods have been used, partially using the hermeneutics of old-printed texts in accordance with the modern system of scientific knowledge. The historical antecedents of ornamental gardening, horticulture, forestry and vegetable growing, new trends in the ornamental plants cultivation, modern aspects of Green Urbanism are discussed. The need for the introduction of indoor plants in the residential and office premises interiors is argued in order to create a favorable atmosphere for work and leisure. The extreme importance of selecting an assortment and developing environmentally friendly ways to increase the resistance of indoor plants against pathogens and pests in conditions of insufficient lighting, humidity, abnormal fluctuations in air temperature, etc. has been revealed. In conclusion, the world experience in the use of ornamental garden plants testifies to the eternal desire of man for unity with nature, which is especially growing in conditions of progressive urbanization. The current global trends of Green Urbanism are of particular importance in Ukraine in terms of the Ukrainian public aspirations to integrate the state into the European community.

Aim. To define the phenomenon of personal formation and reveal sources of creative energy, and scientific achievements of the Doctor of Biological Sciences, Professor, Corresponding Member of NAS of Ukraine, the Honored Worker of Culture of Ukraine, Laureate of the Ukrainian State Award in the field of architecture, holder of all three classes of the Order “For Merit” and many state, departmental and international awards, Honorary Citizen of Uman, an outstanding scientist and phytobiologist, a world-renowned researcher of hazelnut and the author of hazelnut cultivars Ivan Semenovych Kosenko. He was also a head of the National Dendrological Park “Sofiyivka” of the National Academy of Sciences of Ukraine for 42 years. Methods. Biographical paradigmatic-synergetic methods were used to work, and the cognitive possibilities of the synergetic approach to study the way of life and personality of a scientist in his individuality and imagery in natural disasters and sociopolitical upheavals of the 20th – early 21st centuries. Results. The dynamics of the notion of “personality” and the place of a scientist's personality in scientific cognition in different countries and at different epochs of human development are analyzed. The Curriculum Vitae is presented based on Ivan Semenovych Kosenko's questionnaires and biographical publications of his colleagues, which provide information about his childhood and youth and the role of family and teachers in shaping his personality. Ivan Semenovych's activity during major political and economic crises and natural disasters, when the fate of “Sofiyivka” was under the decision, characterizes him as an effective manager. He was able to assess external and internal threats realistically and successfully overcome the most significant obstacles involving the public, business, and power-holding structures. In the history of world management of preservation, restoration and development of botanical gardens and parks-monuments of landscape art were gone his following achievements: results of restoration of “Sofiyivka” from the consequences of mudflow with more than 70-cm ice, which in night from 3 to 4 April 1980 swept through the park destroying everything on its way; withdrawal in May 1987 of the chemical threat to “Sofiyivka” and the whole Uman district from the possible construction of a nicotine acid plant near Uman; organization of works in the new territories of the park in the turbulent 1990s, when almost all production and construction in the state stopped; restoration of the original appearance of some park landscapes in the historical part of the park and development of new territories in 2014–21; the recruitment original landscapes in the historical part of the park and the restoration of new areas of the park, when the foreign and domestic political situation in Ukraine worsened, accompanied by a drop in the purchasing power of the domestic population and fears of foreign tourists about possible terrorist attacks, minimized income from the sale of planting material and tourist services. Conclusions. The unusual achievements of the team headed by I.S. Kosenko and the results of his more than 40 years of scientific and organizational activities, as well as the best traits of an anti-crisis manager, capable of achieving the desired success in the most challenging economic and political conditions while maintaining comfortable conditions of work and rest for the personnel, are generally recognized in Ukraine and throughout the world. It can state that the currently implemented two five-year term limits with mandatory rotation of heads of the state enterprise needs significant reservations regarding the directors of historical, cultural, and scientific institutions.

Information on cytogenetic changes in the seed offspring of old-aged trees is insufficient and inconsistent. In our studies, 150–200-year old trees of Picea abies and Pinus pallasiana were used. We analyzed peculiarities of their karyotype, nucleus-forming region, and nucleolus in the cells of seedlings of P. abies and P. pallasiana emerged from seeds in natural populations and plantations of introduced plants. As a result, age-dependent cytogenetic disorders were observed, such as the chromosome bridges, lag, premature segregation, and agglutination. Peculiarities with regard to number and structure of secondary chromosome constriction are demonstrated. The identified properties of the cell structure of seeds of old-aged trees of P. abies and P. pallasiana indicate that more resources are needed to maintain their protein synthesis at a normal level. The increased number of abnormalities indicates a significant impact of accumulated intracellular metabolites and cytopathological phenomena in mother plants on the quality of seed offspring.

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