Purpose. To analyze thecollection of hybrid tea roses for the countries of origin, flower color, years of breeding. To select best modern cultivars for use in landscaping basing on evaluation of ornamental 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) has been analyzed. After screening the collection, 141 hybrid tea rose varieties have been revealed. The collection of hybrid tea roses varieties has been analyzed for the countries of origin, flower color, years of breeding. Modern varieties (bred after 2000) has been described and their decorative value, economic characters has been estimated. Conclusion. The analysis of the collection of hybrid tea roses showed that most of them are varieties with red and pink flowers bred in 1961–2000 in countries of Western Europe. Evaluation of modern varieties for ornamental properties and economic characters allowed the authors to recommend 10 hybrid tea varieties for use in landscaping, namely: ‘Akvarel Rose Park’, ‘Alain Souchon’, ‘Aphrodite’, ‘Chippendale’, ‘Edith Piaf’, ‘Laetitia Casta’, ‘Line Renaud’, ‘My Girl’, ‘Pullman Orient Express’, ‘Terracotta’.

Purpose. Literature review of DNA banks creation as the current strategy of plant genetic resources conservation. Results. The current state of plant genetic resources conservation was analyzed in the context of the threat of gene­tic erosion. The importance of DNA banks was shown which function is to store DNA samples and associated products and disseminate them for research purposes. The main DNA banks in the world were described, including the Republican DNA Bank of Human, Animals, Plants and Microorganisms at the Institute of Genetics and Cytology of the National Academy of Sciences of Belarus. Stages of DNA banking were considered: tissue sampling (usually from leaves), cell destruction, DNA extraction, DNA storage. Different methods of tissue sampling, extraction and DNA storage were compared. The need for Plant DNA Bank creation in Ukraine was highlighted. Conclusions. DNA collections is an important resource in the global effort to overcome the crisis in biodiversity, for managing world genetic resources and maximi­zing their potential.

Purpose. The analysis of allelic status of such key genes of carotenogenesis as gene of lycopene-ε-cyclase (lcyε) and gene of β-carotene hydroxylase (crtRB1) for DNA-markers in domestic maize lines and their hybrids. Methods. DNA isolation, PCR, gel electrophoresis. Results. Allelic status of key genes of carotenogenesis was investigated in eight maize inbred lines and their single crosses. Molecular genetic polymorphism in the studied sample of maize lines and hyb­rids has been detected in gene of β-carotene hydroxylase for marker crtRB1-3’TE. For this gene, codominant character of inheritance of alleles of parental lines in single crosses was confirmed. For markers of gene of lycopene-ε-cyclase lcyε-3’INDL and lcyε-SNP216, polymorphism in the group of investigated lines and hybrids has not been identified, genotypes included only one variant of alleles for each marker. For lines ‘DK253ZSZM’, ‘DK633/266zS,zM’, ‘DK366zS,zM’ and hybrids ‘DK296S×DK253ZSZM’, ‘DK272S×DK633/266zS,zM’ and ‘DK231S×DK366zS,zM’, the decrease of the activi­ty of β-carotene hydroxylase owing to the mutation of gene crtRB1 under the influence of transposone element at the 3’-end, the inhibition of β-carotene transition into β-cryptoxanthin can be expected, that allows to predict β-carotene accumulation in grain. Conclusions. The study of allelic status of carotenegenesis gene of lycopene-ε-cyclase in maize showed no polymorphism for markers lcyε-3’INDL and lcyε-SNP216 in eight inbred lines and their single crosses, along with this, for marker lcyε-3’INDL in genomes of all studied samples the allele was identified to be favorable for the accumulation of β-carotene. For marker crtRB1-3’TE of gene of β-carotene hydroxylase, the studied breeding material was polymorphic. Allele of crtRB1 being favorable for the accumulation of β-carotene was identified in lines ‘DK253ZSZM’, ‘DK633/266zS,zM’, ‘DK366zS,zM’ and hybrids ‘DK296S×DK253ZSZM’, ‘DK272S×DK633/266zS,zM’ and ‘DK231S×DK366zS,zM’. Single crosses inherit maternal and paternal alleles of gene of β-carotene hydroxylase codominantly.

Purpose. To analyse the Ukrainian nomenclature of subtribe Malinae representatives and improve terminological system of the Ukrainian names of a species and a generic levels and names of fruit crops. Results. There is a confusion in the Ukrainian names of plants of Cydonia-Chaenomeles–Pseudocydonia, Mespilus–Eriobotrya, Amelanchier–Cotoneaster. Considering the division of Sorbus s.l. on separate genera Sorbus s.str., Aria, Cormus, Chamaemespilus, Torminalis and availability of numerous hybrids with their involvement, the Ukrainian names for both taxa and nothotaxa of species and generic levels are offered, principles of their choice are also considered. Formation of the Ukrainian generic names on the basis of specific epithets leads to undesirable tautonomy. Aspects of derussification of the Ukrainian professional terminology are discussed. Conclusions. Ukrainian scientific generic and nothogeneric plant names for subtribe Malinae are transliterated/transcripted, borrowed as a calque of latin names or have their own origin, consisting of one or two words. The choice of the best variants of generic and species names from a number of possible ones has a temporal component and largely depends on experts who apply them and basic principles of choice. It is necessary to improve the modern Ukrainian plant nomenclature on a national basis involving the transformed Latin scientific names for introduced species and hybrids.