The purpose of the work is to establish the characteristics of the accumulation of heavy metals of aboveground and underground organs in plant samples of 8 varieties of Narcissus hybridus and Camassia cusickii in the urbanized environment of the city of Ufa. The study of the elemental composition of the samples was carried out according to the method of quantitative chemical analysis ‘Determination of As, Pb, Cd, Sn, Cr, Cu, Fe, Mn and Ni in laboratory samples of food products and food raw materials by the atomic absorption method with electrothermal atomization’. It was found that the content of nickel, copper, cadmium, lead, magnesium, iron, chromium in all the samples studied does not exceed the standards specified in the State Pharmacopoeia of the Russian Federation (SP RF). The arsenic content exceeds the standards specified in the SP RF by 3.4 times. Revealed a high intensity of biological absorption of copper. It has been established that the concentrations of As, Cu, Pl, Mn, Fe in the aboveground organs are higher than in the underground part of plants; the ratio of the content of Ni, Cr, Cd in aboveground and underground organs is the same.

Abstract. Purpose. Heavy metals can have a negative effect on plants, animals and humans if their concentration exceeds certain limits. Therefore, it is important to establish the characteristics of the accumulation of heavy metals and to determine the elemental composition of aboveground (leaves) and underground (bulbs) organs in plant samples of 8 varieties of Narcissus hybridus hort. (Actaea, Arctic Gold, Cassata, Quail, Sir Winston Churchill, White Lady, Calgary, Pink Parasol) and Camassia cusickii S. Wats. in the urbanized environment of the city of Ufa (Republic of Bashkortostan). Methods. The study of the elemental composition of the samples was carried out according to the method of quantitative chemical analysis “Determination of As, Pb, Cd, Sn, Cr, Cu, Fe, Mn and Ni in laboratory samples of food products and food raw materials by the atomic absorption method with electrothermal atomization No. M-02-1009-08”. Scientific novelty. This work is the first to analyze the results of the content of individual elements in aboveground and underground organs in samples of cultivated floral and ornamental plants in the forest-steppe zone of the Bashkir Ural. Results. It was found that the content of nickel, copper, cadmium, lead, magnesium, iron, chromium in all the samples studied does not exceed the standards specified in the State Pharmacopoeia of the Russian Federation (SP RF). The arsenic content exceeds the standards specified in the SP RF by 3.4 times. Revealed a high intensity of biological absorption of copper. The peculiarity of the accumulation of individual elements by different taxa of the studied plants is noted. It has been established that the concentrations of As, Cu, Pl, Mn, Fe in the aboveground organs are higher than in the underground part of plants; the ratio of the content of Ni, Cr, Cd in aboveground and underground organs is the same. As a result of these studies, it was recommended to use the studied cultivars as a phytoremediator of arsenic.

Abstract. To study the effect of the spectral composition of light on the processes of plant life, the most successful source of illumination is light-emitting diodes, which allow you to receive light waves of a certain length. Currently, great prospects are associated with the development of microbial biological products based on endophytic strains of bacteria of the genus Bacillus, which inhabit internal tissues without harm to the host. The article presents the results of studies of the influence of red, blue, red + blue and white light spectra in combination with endophytic strains of B. subtilis 10–4 bacteria on the vegetative reproduction of Lilium × hybrida ‘Trendy Savannah’ in a closed room without access to sunlight. The purpose of the work is to identify the optimal conditions for obtaining high-quality planting material for lilium. Methods. The light was provided by LED modules. The bulbs of Lilium for experimental variants were soaked in B. subtilis 10–4 before planting. Scientific novelty. For the first time, specificity was revealed in the formation of vegetative and generative organs of the cultivar, as well as in the cycle of seasonal development, depending on lighting options. Results. According to the results of the conducted studies, it was revealed that to obtain bulblets, as a material for vegetative reproduction of Lilium × hybrida ‘Trendy Savannah’ in a closed room, it is most promising to use the red light spectrum without treating bulbs with bacteria; to obtain baby onions – the blue range in combination with strains of B. subtilis 10–4 bacteria. The results of two-factor dispersion analysis showed that the greatest influence of the light mode factor was revealed for the height of bulblets and the number of bulblets and the processing factor of B. subtilis bulbs 10–4 – for the diameter of bulblets and the length of the leaves of bulblets. A significant maximum of the total contribution of both factors (A × B) was noted for the width of the leaves of bulblets and the number of baby onions.

Abstract. Purpose is to study the effectiveness of the “Lignogumat” drug on the growth, development and decorative qualities of some flower and ornamental crops (Campanula persicifolia L., C. carpatica Jacg., Phlox paniculata L.) in the forest-steppe zone of the Bashkir Cis-Ural. Methods. Observations of the seasonal rhythm of plant development were carried out according to the method of phenological observations in botanical gardens, the assessment of ornamental features was carried out according to the generally accepted method of state variety testing of ornamental crops. Scientific novelty. For the first time in the conditions of the Bashkir Cis-Ural, the influence of the growth stimulator “Lignogumat” on the decorative qualities of some types of flower crops of the collection of the SUBGI UFRC RAS was studied. Results. The features of phenology, growth, as well as the decorative qualities of plants during fertigation with a growth regulator are analyzed. When evaluating decorativeness on a 100-point scale in C. persicifolia, it was found that “Lignogumat” is effective for such decorative features as the number of leaves, the abundance of flowering and the density of the inflorescence; there is also a reduction in the duration of the period from regrowth to flowering by 5 days. In C. carpatica, such morphometric parameters as flower and inflorescence size, abundance and duration of flowering have improved; also, the drug helps to increase the area of the horizontal projection of the color spot on the bush by 2.6 times compared to the control. Ph. paniculata “Lignogumat” is effective for such decorative features as the size of the inflorescence, the abundance and duration of flowering, also during fertigation, the area of the horizontal projection of the color spot on the bush increased by 1.5 times, thereby increasing the decorative qualities of the phlox.

Abstract. In modern conditions, heavy metals (HM) are considered as the main soil pollutants. On the one hand, they are necessary for the normal course of physiological processes, and on the other hand, at elevated HM concentrations, they are toxic. In this regard, it is important to study the content of heavy metals in plant objects. The aim of our research was to study the accumulation and distribution of elements (As, Cd, Pb, Ni, Mn, Cu, Fe, Cr) in the aboveground and underground parts of ornamental herbaceous perennials of the genus Iris L., Paeonia L., Narcissus L. The objects of research were aboveground and underground organs of four species of the genus Iris L., eight varieties of the genus Narcissus, and seven taxa of the genus Paeonia. Methods. The study of the elemental composition of the aboveground and underground parts was carried out according to the method No. M-02-1009-05 of atomic spectroscopy. Mathematical data processing was carried out using the generally accepted methods of variation statistics using the AgCStat software package as an Excel add-in. Scientific novelty. For the first time, representatives of three different generic complexes were taken for the study. Results. Studies have shown that in the aerial part of most of the taxa studied, As accumulates in concentrations exceeding the maximum allowable concentrations. An excessive amount of Cr, Cu, Ni, Pb was noted in the aboveground part of some representatives of irises and peonies. The content of Cd, Fe, and Mn in all studied taxa is within acceptable limits. It was revealed that the indicators of the content of most elements are characterized by great variability, which is confirmed by the results of other researchers. It was noted that in irises in larger quantities than in other taxa, As, Cr, Mn, Ni accumulate in the aboveground part, and Cd, Cr, Fe, Mn, Ni in the underground part, therefore, they can be recommended for use in landscaping urban areas.