Decorative Qualities Research Articles

Optimizing micropropagation of Miscanthus sinensis ‘Gold Bar’ by shortening the production cycle and reducing acclimation stress through the use of selected growth regulators

Miscanthus, with its decorative qualities and low cultivation requirements in terms of soil fertility and temperature, is the most popular grass in gardens and urban areas. For years, micropropagation has been regarded as an effective method of its production. However, in order to meet the demands of customers and provide adequate quantities of high-quality planting materials, it is necessary to develop more efficient methods of Miscanthus production. The present study evaluated the influence of different media on Miscanthus sinensis (Thunb.) Andersson (silver grass) multiplication as well as assessing the effect of different concentrations of selected cytokinins and auxins on multiplication and rhizogenesis. To shorten the production cycle and reduce costs, ex vitro rooting was combined with acclimatization, and selected growth regulators were used to decrease stress associated with external conditions. Biochemical analyses were conducted at each stage to determine the content of basic organic compounds, hydrogen peroxide (H2O2) and catalase activity. Stomatal function was assessed at the acclimatization stage. The obtained results allowed for the production cycle of plants propagated in tissue culture to be shortened by simultaneous rooting and acclimatization of microcuttings sprayed with abscisic acid (ABA). This regulator has been shown to effectively reduce plant stress associated with acclimatization by reducing H2O2 concentration and increasing assimilation pigment content. Growth regulators reduced the number of stomata that developed on the leaves of silver grass and led to lower stomatal conductance. H2O2 should be considered not only a stress marker but a vital signaling molecule.

Identification of bHLH transcription factors and screening of anthocyanin-related genes in Lagerstroemia indica.

The basic helix-loop-helix (bHLH) family is one of the three major transcription factor families that play important transcriptional regulatory roles in plant growth and development. One of the most crucial elements in defining Lagerstroemia indica's decorative qualities is flower color. However, the function of the bHLH transcription factor family in L. indica anthocyanin glycoside synthesis has not been clarified. Using the transcriptome data of flower color, 79 LibHLH genes were found in this study. Phylogenetic analysis showed that the LibHLH genes can be divided into 16 subfamilies, and most of the genes in the same subfamily have similar conserved motifs. The total anthocyanin glycoside content of L. indica 'Zihua Guifei' petals was determined during three developmental stages of the petals' growth. The results showed that the total anthocyanin glycoside content grew gradually with growth and development, and that it accumulated most during the full bloom stage. By using gene expression analysis, protein interaction network analysis, and bioinformatics, it was possible to determine which member of the III f family, LibHLH29, is important for the synthesis of anthocyanin glycosides in L. indica. Its expression was confirmed by qRT-PCR, and the results were essentially compatible with the transcriptome data. It was more prominent in the light-colored bloom stage the color-transition stage of L. indica 'Zihua Guifei'. It can be further investigated as a major candidate gene for regulating anthocyanin glycoside synthesis in L. indica, thus laying the foundation for an in-depth study of the interactions among transcription factors.

Introduction of varieties of чубушник (Philadelphus L.) selected by N.K. Vekhov in the Stavropol Botanical Garden

To create sustainable and long-lasting landscape gardening, gardeners need a wide range of ornamental plants, among which considerable importance is given to Philadelphus L. For recreational development of territories and enrichment of the assortment of ornamental plants in the zone of insufficient moisture, varieties with good xerothermal characteristics, high decorative qualities and adaptive capabilities are proposed.The biological and decorative features of seven varieties Philadelphus L. in the soil and climatic conditions of the Stavropol upland have been studied. Earlier and later periods of vegetation onset in different years are highlighted. The dates of the beginning and end of flowering have been set. The average duration of flowering was 18–23 days, the maximum was 25 days, the minimum was 16 days. The analysis of habitual indicators is carried out, the characteristic of the crown shape is given. The study of phytoentomological resistance has shown high resistance of these varieties to diseases and pests in local soil and climatic conditions. According to the results of the introduction variety study, seven varieties of Philadelphus L. with high decorative qualities and resistance to a complex of adverse environmental factors were proposed for mass use in decorative gardening in the Stavropol territory.

Analysis of the Species Composition of Wood and Shrubs Species, Their Role in the Structure of City Parks of Osh

In the city of Osh, one of the acute problems when using wood species in landscape design is the study of their ecological properties in relation to the environment. The planting of trees in urban parks, squares along streets and boulevards is influenced by various environmental factors. In such conditions, the study of the ecological state and viability of plants is relevant, since woody plants perform sanitary, hygienic and aesthetic functions in an urbanized environment. The main purpose of this scientific article is to identify in the conditions of the city of Osh, the peculiarities of the development of ornamental species of woody and shrubby plants, the ecological justification of their reconstruction, to improve the sanitary and hygienic condition and the development of practical recommendations in landscape works. The study of the characteristics of tree and shrub species and the results obtained to assess their role in the structure of urban parks in Osh will help to improve their decorative qualities, the correct choice of their placement, care and improvement of the urban environment. The results of the work can also be used in the construction and reconstruction of green spaces in parks in the city of Osh, as well as in the improvement of other public facilities in the city. The practical recommendations obtained from the results of the study initiate a large-scale reconstruction of planted species of trees and shrubs in parks, squares and along modern streets.

Comparative assessment of different rose cultivars under environmental conditions in central Transylvania, Romania

Despite the abundance of rose varieties, it is necessary to create and use new genotypes to improve the appearance of green spaces and meet the demands of society, as well as to ensure their response to environmental variables and climate change. To assess the overall value and flower quality of several Romanian and foreign varieties under the ecological circumstances of Northwest Romania, 14 rose varieties from the shrub and floribunda groups were examined. The study identified notable variations among the cultivars for plant growth, foliage, flowers, and their susceptibility to the three primary fungal diseases (black spot, powdery mildew, and rust) prevalent in the study area. Additionally, the study identified the cultivars with proper resilience to frost during the five-year investigation period, particularly after the cold winters. New varieties obtained at HRS Cluj-Napoca, such as Cristiana, Pasiune mov, Maria-Cristina and Splendid, and international varieties such as Fisherman's Friend, Bonica and Mirato, stood out for their decorative quality and attractive floral elements. Some of these varieties have also been considered potential parents for disease and frost resistance in new hybridization projects. Broad-sense heritability data for the quantitative variables under investigation, as well as multivariate analyses, provided useful information for new rose breeding programs. The comparison of quantitative and qualitative assessments of important decorative traits for the roses, together with proper statistical calculation processes to assure their validity and trustworthiness, enabled the development of hypotheses or working models that can improve rose breeding efficiency.

Оценка различных форм груши кавказской (P. caucasica Fed.) для селекции на декоративность

Abstract. The article describes the results of studying the morphological features of 93 forms of P. caucasica Fed. collected in various regions of the Caucasus. The research was carried out in the collection gardens score, and samples with lower scores, but having one or more attractive decorative features. The studied samples of the Caucasian pear had valuable decorative qualities to varying degrees: narrow pyramidal crown (index 2.16) – Kasp-69-59; rounded crown (index 0.88) – 67-Chr-249, 67-B-208, Ard-69-18; large flowers – Ter-69-77, 67-Ku-139, 67-BZ-37, B-69-111, 67-BZ-67, B-69-87, Kasp-69-59; abundant flowering – P. caucasica Fed. № 2, P. caucasica Fed. №3, P. caucasica Fed. №6, B-69-88, L-69-98, L-69-101, Shali-69-36; attractive appearance of leaves, absence of fungal diseases – Arg-69-34, 67-B-190, Ur-69-1, 67-Chr-250, B-69- 78; anthocyanin integumentary coloration of fruits – P. caucasica Fed. №4 and №5, B-69-108, Kasp-69-59. Frost resistance of plants was an important feature for the use in ornamental gardening. This property was noted in the samples of P. caucasica Fed. №4, B-69-78, Ard-69-18. Samples B-69-90, B-69-78 had edible sweet fruits. Selected forms of the Caucasian pear retained their decorative properties during the growing season. The forms B69-88, B-69-78, Kasp-69-59, L-69-96, 67-Ku-127 can have the greatest value for breeding in terms of the sum of points and the presence of valuable features. Keywords: the Caucasus, the Caucasian pear, decorativeness, morphology, diversity of features, selection, breeding Financing source: The research was carried out at the expense of a grant from the Federal State Budgetary Educational Institution «Maikop State Technological University» «Assessment of various forms of Caucasian pear (P. caucasica Fed.) for breeding for decorative purposes», registration number of the scientific project: NP 8-2024 of the Maikop Experimental Station – a branch of All-Union Research Institute of Plant Breeding (VIR) in 2021-2023s in accordance with modern methods of studying and assessing the decorative properties of research objects. Twenty-two samples were identified, including those with the highest total decorative

The extraordinary universe of Peter Apian: technical investigation of five copies of a 16th-century astronomical book

In 1540, in Ingolstadt, Germany, the influential astronomer and printer Peter Apian produced the Astronomicum Caesareum: a printed and hand-coloured astronomical book visualising the Ptolemaic universe through the use of diagrams and wheelcharts, worthy of his imperial patron, Charles V. About 130 copies have survived to this day, with varying degrees of paper quality and level of decoration, and only eleven volumes are considered deluxe copies. We thoroughly analysed one deluxe volume held at the Fitzwilliam Museum, Cambridge, and compared the results with four (one deluxe and three standard) other copies from institutions in the UK. A non-invasive analytical protocol was applied, including extensive microscopy, fibre-optic reflectance spectroscopy (FORS), X-ray spectroscopy (XRF), macroscale XRF (MA-XRF) and Raman spectroscopy. The most interesting pages were chosen based on art-historical evidence and the variety of the colour palette, including on volvelles (wheelcharts) and coats of arms. Following a systematic approach, we analysed the same pages in each volume, gathering information on the colour palette in all the volumes. The type of paper and the presence of watermarks were also documented. A wide range of materials was identified in the five copies, including red, purple and yellow organic dyes, lead white, verdigris, vermilion, azurite, indigo, smalt, and lead–tin yellow. Mosaic gold was used to embellish certain paint passages in the deluxe volumes and metals (gold and silver) were applied on some pages. The comprehensive findings were essential to identify specific traits related to Apian’s workshop, to differentiate deluxe from standard copies, to suggest an order of production of the copies, and to provide new information on this landmark book and more generally in an under-researched field of study.

Phytoncidal activity of the needles of Juniperus L. representatives in the technogenic conditions of the city of Dnipro

The territory of the Dnipro urban agglomeration is one of the most polluted in Ukraine. The high concentration of industrial enterprises, roads, density of residential buildings and urban population are factors of anthropogenic pressure on urban ecosystems that significantly affect the quality of the habitat of living organisms and human life. Therefore, an urgent problem of modern urban planning and urban amenities is compliance with sanitary requirements for landscaping residential and industrial areas. The creation of decorative compositions with a predominance of tree and shrub species ensures the landscape attractiveness of the city, reduces the level of noise and dust pollution, improves temperature and wind conditions, improves public health by normalizing the psychological state of people and purifying the city air with phytoncides of plants, especially conifers. Taking into account the high decorative qualities and resistance of junipers to adverse climatic conditions, the aim of the study was to analyze the annual dynamics of phytoncidal activity of Juniperus media V. D. Dmitriev «Blue gold» and J. sabina L. «Tamariscifolia» needles in conditionally clean and polluted by vehicle emissions areas of Dnipro city. The plant material was collected at 4 monitoring points in Dnipro, 1 was a conditional control, and the other 3 were experimental plots with different levels of vehicle traffic. Needles were sampled at all periods of shoot ontogeny. The phytoncidal activity was determined by the method of «steaming» microbial test cultures with volatile needle secretions on test cultures of Staphylococcus epidermidis, Staphylococcus aureus, Micrococcus sp., Bacillus subtilis, Esherechia coli, Pseudomonas fluorescens, Candida albicans. The results of the study show that the dynamics of phytoncidal activity of J. media and J. sabina needles during the year is the same in plants growing in a conditionally clean area and under the influence of motor vehicle traffic: the amount of released phytoncides increases in spring, during the period of intensive shoot growth, reaches a maximum at the stage of slowing down their growth (in summer), decreases in autumn, with the cessation of growth processes, and is minimal in winter, when there is no shoot growth. It has been shown that in a clean area, needle extracts of both representatives of the genus Juniperus have the greatest inhibitory effect on the growth of S. aureus colonies, and under the influence of vehicle emissions, the phytoncidal activity is highest against S. aureus and S. epidermidis strains. It was found that out of the two studied representatives of the genus Juniperus, J. media has the highest stability of the ability to secrete phytoncides under conditions of motor vehicle traffic load, which we recommend for use in urban landscaping.

Regenerative potential and its variability in different topophysical zones of Kalanchoe daigremontiana leaves in in vitro culture conditions

Plants of the genus Kalanchoe are the most frequently purchased potted plants because of their decorative qualities and easy cultivation. Modern commercial plants have unique shapes that are usually not genetically determined; hence, in vitro cultures are used to propagate such specimens. The efficiency of regeneration is significantly affected by the type of explant used when that explant was previously located on one of several parts of a complex plant organ. The study aimed to investigate the influence of the topophysical location of collected explants on the regeneration efficiency of adventitious shoots. Various regeneration pathways were observed in the in vitro micropropagation of Kalanchoe daigremontiana leaf fragments, i.e., direct and indirect organogenesis from the callus stage. The results show a dependent relationship between the location of the collected explant and its regenerative potential. The most remarkable regenerative capacity of K. daigremontiana was found in leaf blade fragments taken from the middle and proximal zones. In addition, the explants collected from the marginal zone of the leaf blade were notably more valuable than those from the part located near the midrib. The research results indicate that the growth and development of new seedlings propagated vegetatively with the in vitro method depends on their location on the mother plant.

ОЦЕНКА СОРТИМЕНТА КАЛЕНДУЛЫ ЛЕКАРСТВЕННОЙ КАК КУЛЬТУРЫ ДЛЯ ОЗЕЛЕНЕНИЯ

Calendula officinalis L. is one of the most common pharmaceutical crops cultivated not only in the Krasnodar region, but also in the south of the Russian Federation as a whole. In addition to its medicinal qualities, a high content of essential oils, as well as phenols and flavonoids, the crop is an excellent alternative to annual floral and ornamental plants in landscaping. In this regard, the purpose of the research was to evaluate seven varieties of Calendula officinalis L. in terms of duration,intensity and timing of the beginning of flowering, the activity of growth processes, size, color, inflorescence structure and the identification of the most adapted to growing conditions varieties that have high decorative qualities. Proposals were made on the directions of using the studied varieties in ornamental gardening and landscaping of the territory. The studies were carried out in 2022-2023 at the experimental site of private household plots in the central zone of the Krasnodar region. As a result of the research, it was found that the studied varieties of calendula had significant differences in a number of morpho-biometric indicators, but turned out to be highly adapted to the growing conditions in the south of the Russian Federation. According to the combination of ornamental qualities, three varieties of calendula officinalis were identified for cultivation in the central zone of the Krasnodar region. The Tutti-Frutti yellow variety is recommended for planting in flower beds due to the bright flowers of the inflorescence and the low growth of the plants. It is advisable to use the Geisha variety for the design of plots in landscape design and for cutting flowers. In garden and park landscaping, attention should be paid to the King's Cup variety, which stands out for a complex of decorative qualities and a long flowering period. Key words: CALENDULA, LANDSCAPING, ASSORTMENT, PHENOLOGY, GROWTH, FLOWERING, ORNAMENTAL TRAITS

VERTICAL GREENING OF THE HISTORICAL PART OF KYIV

The use of elements of vertical landscaping on streets that are the most visited and belong to the historical part of the city of Kyiv was studied. An inspection of the plants was carried out, the species composition was determined, the condition was assessed and groups were selected for decorative qualities. The results of the survey and assessment showed that decorative vines in these parts of the city are represented by 4 orders, 4 families, 5 genera, 8 species and one form. All species belong to the department of Angiosperms (Magnoliophyta). They are divided into perennial woody vines and annual herbaceous vines. It was found that not all the investigated historical streets of the city of Kyiv have elements of vertical landscaping. Having determined the general decorativeness, it can be stated that most plants have sufficient decorativeness and only a small percentage - insignificant. Based on the data of the researches, the division of creeping plants was carried out according to decorative qualities and it was established that the majority of vines are decorative leaves. There are fewer plants that are decorative with leaves and flowers, as well as those that are valued for their fruits. The age of the plants ranges from 5 years to 30 or more years. All plants are in satisfactory and good condition, but need constant care. For a more aesthetic appearance of plants against the background of buildings or structures, it is necessary to use more modern methods of vertical gardening. Comparing the number of plantings of thorny plants and plantings of trees and bushes, it was established that vertical landscaping is sufficient on certain streets, and on some streets it needs to be developed and improved.

Studying of the biological characteristics of introduced rare citrus taxa in the humid subtropics of Russia as one of the elements of preserving and increasing plant biodiversity

The study is devoted to the study of the biological characteristics of introduced citrus taxa. The study of the biological characteristics of plants in various soil-climatic zones is of great scientific and practical importance, and is an essential element in preserving and increasing biodiversity by new introduced plant species. As a result of the research, the forms C. maxima ‘Sambokan’, C. × meyeri, C. × limetta ‘Chontipico’ and C. × limonelloides were isolated, which can be recommended for creating plantings in open ground and cultivation structures with uncontrolled conditions in the humid subtropics of Russia. Taxa C. aurantifolia, C. aurantifolia ‘Foro’, C. × limonelloides, C. × meyeri, C. × myrtifolia, C. × latifolia, C. × bergamia, C. × limetta ‘Chontipico’, C. limon ‘Del Brasil’, C. × meyeri, C. medica var. sacrodactylus, distinguished by its decorative qualities, can be recommended as an extension crop in demonstration areas, as well as for the design of winter gardens, terraces and interiors in various rooms.

Decorative qualities of subtropical fruit plants in landscapeing of populated settlements of the forest-steppe of Ukraine

Decorative qualities of subtropical fruit plants in landscapeing of populated settlements of the forest-steppe of Ukraine

Preservation of some rare species of natural flora in the Subtropical Scientific Centre of the Russian Academy of Sciences

Conservation issues related to biological diversity, especially rare and endangered plant species, remain among the most pressing challenges. Scientific institutions and botanical gardens play a crucial role in addressing this problem. The Federal Research Centre "Subtropical Scientific Centre of the Russian Academy of Sciences" (FRC SSC RAS) has been actively involved in the study of natural flora, including rare species, since the mid-1990s. The objective of these studies was to explore 48 rare plant species belonging to 34 genera from the families Boraginaceae, Ranunculaceae, Asparagaceae, Amaryllidaceae, Asteraceae, Orchidaceae, and Iridaceae in the conditions of the humid subtropics of Russia. The research revealed that the studied species are perennial herbaceous plants with high decorative qualities. Among them, 29 % are rhizomatous, 23 % are bulbous, 21 % are cormous, 19 % are short-rhizomatous, and 8% are tree-like. Phenological observations indicated that all species flowered, and almost all bore fruits. Winter-flowering species constituted 10% of the collection, spring-flowering species – 48 %, summer-flowering species – 31 %, and autumn-flowering species – 10 %. The studied plant species have various conservation statuses, with 16 species listed in the Red Books of the Russian Federation, 24 in the Krasnodar region, 20 in Sochi, 36 in other regions of the Russian Federation, and 20 on the IUCN Red List. Fourteen species are identified as rare and endemic.

Nutraceutical and Medicinal Uses of Aloe Vera (Aloe barbadensis)

This article elucidates the medicinal and pharmacological properties of Aloe vera, a widely recognized plant that thrives in semi-arid climates found in tropical and subtropical areas. The potential medical, therapeutic, and nutritional nutraceutical applications of A. vera components are highlighted in this article. Plants are grown for their agricultural, medicinal, and decorative qualities when kept indoors in pots. Plants are an excellent source of chemical components that exhibit a broad range of biological functions. One of Aloe Vera's most bioactive polysaccharide, acemannane, is known to modulate immunity and have anti-cancer, anti-oxidant, bone-healing, neuroprotective, and intestinal health-promoting properties. Since the beginning of time, people have employed the mucilaginous gel created by the parenchymal cells in the aloe vera pulp for a number of therapeutic purposes. Aloe vera has been utilized as a nutraceutical for many years. This page highlights significant applications of A. vera components as medicines and therapeutic foods. Aloe vera gel showed the presence of over 200 phytochemicals. Aloe vera gel is taken from the plant's leaves, and the final goods must be stabilized and prepared using the proper processing methods.

Влияние обработки фиторегуляторами на декоративные качества растений Tagetes patula L. сорта Петит гармония в условиях контейнерного содержания

The article considers the issues of the influence of treatment with Zircon and tank mixtures Zircon-Siliplant, Zircon-Ecofus to increase the decorative indicators of tagetes of the rejected variety Petit harmony in conditions of outdoor container content. As a result of the experiment, a reliable effect of the use of growth-regulating drugs on morphometric parameters was established. The article provides data on the positive effect of the drugs on the decorative qualities of the rejected tagetes. Keywords: CONTAINER FLORAL DECORATION, DECORATIVE QUALITIES OF FLORAL COMPOSITIONS, AESTHETIC QUALITIES OF FLORAL DECORATION, FLOWERING PRODUCTIVITY, GROWTH REGULATORS, GROWTH STIMULANTS, PHYTOREGULATORS, GROWTH REGULATORS, MICRO FERTILIZERS, ORGANO-MINERAL FERTILIZER, TAGETES REJECTED

INVENTORY OF THE SPECIES DIVERSITY OF THE GENUS SPIRAEA L. ON THE TERRITORY OF THE BOTANICAL GARDEN "PODILLYA" VNAU AND THE USE OF THE SPECIES INVESTIGATED IN CREATING GARDEN AND PARK COMPOSITIONS

The article examines the peculiarities of the use of species and decorative forms of the genus Spiraea in the plantations of the "Podillia" botanical garden of the Vinnytsia National Agrarian University. Namely: Japanese spirea (Spiraea japonica L.), Bumalda's spirea (Spiraea bumalda L.), White spirea (Spiraea alba (Miq.) Zab.), Thunberg's spirea (Spiraea thunbergii Sieb. ex. Blume), Wangut's spirea (Spiraea vanhouttei (Briot) Zab.), medium spirea (Spiraea media L.), birch spirea (Spiraea betulifolia L.). It was established that the species of spirea growing on the territory of the botanical garden "Podillia" of the Vinnytsia National Agrarian University belong to the following sections: Calospira, Glomerati, Chamaedryon, Spiraria. The largest number of plants is the Calospira section, which includes plants of the species Spiraea japonica (Spiraea japonica L.) (12 pcs), Spiraea bumalda (Spiraea bumalda L.) (8 pcs) and White Spiraea (Spiraea alba (Miq.) Zab. ) (4 pcs). As a result of the research, it was established that species of the genus Spirea are highly decorative from the beginning of April to the beginning of November. Although spring-flowering species have a short flowering, but it is very abundant. White, Japanese, and Boumalda spireas have the longest flowering period. Also, studies have shown that, taking into account the decorative qualities of Spireia species, they can be successfully used in the design of landscape or regular style objects in such plant compositions: single or group plantings, mixed borders, curbs and hedges, when creating alleys, undergrowth and the edge of the forest, with greening of the slopes. Based on the results of the observations, landscaping projects were proposed, which demonstrate various ways of using plants of the genus Spirea in combination with other types of plants to create decorative compositions. According to the project decisions, species of the genus Tavolga can be combined with such plants as: Berberis thubergii, Heuchera sanguinea, Euonymus fortune, Coreopsis verticillta, Forsythia Intermedia , Cotoneaster divaricatus, Hydrangea paniculata, Juniperus communis and J. horizontalis.

METHODOLOGY FOR ASSESSING THE ORNAMENTALITY OF WOODY PLANTS IN THE FAR NORTH

The literature widely presents methods that allow evaluating and comparing the decorative qualities of woody plants of different genera and families. But there is no universal method for assessing the decorative qualities of woody plants and the existing methods are not applicable to high latitudes. The purpose of the work was to develop approaches and methods for assessing the decorativeness of woody plants in the Far North. The following approaches were used: the exclusion of the descriptive characteristics of the criterion, the introduction of a question-answer (yes or no) system, the introduction of measurable criteria; accounting of at least 3–5-year data of phenological observations. The assessment of the decorative qualities of woody plants consists of evaluating the crown architectonics, foliage, flowering and fruiting. It includes reduction coefficients that take into account the amount of plant organ damage. The overall assessment of the object can be represented by the sum of all criteria assessments or the decorativeness curve. The advantages of the proposed methodology are the exclusion of the descriptive characteristics of the criterion and the use of criteria calculated on the basis of real data on the plant, while providing the possibility of refining the coefficients for other places of growth.

Influence of plant growth regulators on the main morphological parameters of Paeonia

The article reflects the results of studying the effectiveness of the action of the specialized preparations «Lignohumate» and «Trener» on the growth, development and decorative qualities of some representatives of the Paeonia L. genus complex in the conditions of the forest-steppe zone of the Bashkir Cis-Ural. For the first time in the conditions of the Southern Ural, the influence of new growth stimulants on the decorativeness of some varieties of Paeonia lactiflora from the collection of the SUBGI UFRC RAS was studied. It is shown that under the influence of the studied preparations there was an increase in the number of shoots and flowers on one peduncle, as well as a change in the diameter and height of the flower. It was noted that the use of growth regulators significantly affected the following decorative features: the size of the flower, the abundance of flowering and the number of buds on the peduncle. Among the economic and biological parameters, a large difference between the control and the experiment was noted for the traits: productivity and duration of flowering, reproductive ability and resistance to diseases and pests. Thus, the studied plant growth regulators can be recommended for use in floriculture, as they increase the decorative effect of cultivars.

Influence of the preparation «Lignohumate» on the decorative effect of perennial plants

Purpose of the article is to study the effectiveness of the «Lignohumate» preparation 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. 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. For the first time in the conditions of the Bashkir Cis-Ural, the influence of the growth stimulator «Lignohumate» on the decorative qualities of some types of flower crops of the collection of the SUBGI UFRC RAS was studied. 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 out that «Lignohumate» 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 preparation helps to increase the area of the horizontal projection of the color spot on the bush by 2.6 times compared to the control. In Ph. paniculata «Lignohumate» 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.