scholarly journals Introduction of ornamental herbaceous plants native to the Eurasian steppes in Laboratory of Ornamental Plants, at Main Botanical Garden of Russian Academy of Science

2021 ◽  
Vol 817 (1) ◽  
pp. 012019
Author(s):  
I A Bondorina ◽  
A V Kabanov ◽  
N A Mamaeva ◽  
J A Khokhlacheva
Author(s):  
I. N. Turbina ◽  
G. M. Kukurichkin

The botanical garden in Surgut is the northernmost in Western Siberia and one of the northernmost botanical gardens in Russia. It is the major point for promoting new agricultural and bio-logical technologies to the Far North. Currently, the collection of ornamental plants of the Surgut botanical garden comprises about 200 species and varieties of herbaceous plants belonging to 60 genera and 32 families, and more than 110 species of woody plants. The research objective is to study the adaptation mechanisms of some ornamental plants from the collection of the botanical garden using the up-to-date portable flavonoid and chlorophyll meter DUALEX. The research objects are five species of herbaceous plants of genus Iris L. – Iris hungarica Waldst. & Kit., Iris variegate L., Iris sibirica L., Iris glaucescens Bunge, Iris sulfurea C. Koch. and eight species of woody plants of genus Acer L. – Acer pseudoplatanus L., Acer rubrum L., Acer trautvetteri Medw., Acer tataricum L., Acer ukurunduense Trautv. & C.A. Mey., Acer spicatum Lam., Acer mandshuricum Maxim., Acer ginnala Maxim. The range of nitrogen balance (Nbi) in herbaceous plants varied from 32.2 to 39.7, and the chlorophyll content was from 48.1 to 58.6 mg/cm2. In woody plants, the content of chlorophyll (Chl) ranged from 23.9 mg/cm2 (Acer spicatum) to 31.3 mg/cm2 (Acer rubrum), i.e. only 1.3 times within the group species growing on one flank. The content of flavanols in woody plants ranged from 1.3 mg/cm2 in Acer mandshuricum to 1.9 mg/cm2 in Acer ukurunduense. The maximum values of Nbi, Chl indices for Iris hungarica and Acer pseudoplatanus are an adaptive reaction to growing conditions and indicate the formation of plantprotective functions. The pigment content of leaves in ornamental plants indicates their satisfactory physiological state, as evidenced by a slight variation in biochemical parameters among the tested groups of ornamental plants.


Author(s):  
A. M. Lisnichuk ◽  
N. B. Hutsalo

The findings of the systematic analysis of Kremenets Botanical Garden displays are given. For the purpose of maintaining, optimizing and arranging plant compositions, the ecological and biomorphological features of species have been clarified. The flora of botanical expositions includes 272 species of 3 divisions, 5 classes, 66 families, 138 genera. The systematic analysis demonstrated a numerous representation of the Magnoliophyta division by the number of families (56, 84.9 %), genera (120, 87.6 %) and species (205, 75.4 %), of which Magnoliópsida contains 172 species (63.2 %), with Liliopsida containing 33 species (12.1 %). The Pinophyta division is represented by 6 families, 13 genera, and 62 species (22.8 %). The Polypodiophyta division has smaller numbers – 4 families, 4 genera, and 5 species (1.8 %). According to Ch. C. Raunkiær’s classification, decorative cultures are present in 5 life forms. The Phanerophytes play a significant role in the expositions’ design; their percentage is 48.1 % (131 species). According to the classification of I. G. Serebriakov in the structure of display there are 8 types, which are dominated by herbaceous plants (89 species, 32.7 %). According to ecological indicators, 5 types of ecomorphs have been identified: the heliomorph, the hygromorph, the thermomorph, the acidomorph, and the tropomorph. Among them heliophytes (165 species, 60.7 %), mesophytes (97 species, 35.7 %), microthermophytes (265 species, 97.4 %), subacidophiles (96 species, 35.3 %), and mesotrophs (230 species, 84.5 %) are dominant. It is established that the displays on the territory of the Botanical Garden are stable cultural phytocenoses (or close to that), which function in specific conditions. For the purpose of optimizing botanical expositions, it is advisable to expand the range of ornamental plants.


Author(s):  
E.N. Tyukhtina ◽  

The article deals with one of the most relevant topics of the modern city and ecology - the problem of landscaping in Volgograd. The city is characterized by an industrial urbanism, with a high concentration of population, saturation of production facilities and vehicles, which contributes to a high level of negative impact on the environment. The pace of greening of the city lags behind the pace of construction of the residential sector, and the existing green spaces do not meet the sanitary and hygienic, aesthetic requirements. The prospects of this problem are determined, the existing green spaces are considered, data on the climatic conditions of the city and the ecological situation are given. Improvement in the field of landscaping is associated with the scientifically sound placement of green spaces, taking into account all the factors that affect the growth and development of plants in the urban environment. Unfortunately, due to the uneven distribution of the assortment of trees and shrubs, the species composition of the central streets and squares of the city is extremely poor. The study focuses on the role of the botanical garden in urban landscaping and aims to create recommendations for the sorting of tree and shrub plants for urban landscaping. As a result of the analysis of the assortment of ornamental plants of the open ground of the botanical garden, the article proposed species and varieties of woody and shrubby plants that have passed the introduction tests for more than 5-10 years. Recommendations for sorting are aimed at improving the ecological situation of the city and greening the recreation areas of citizens. The proposed list of tree and shrub species cannot fully solve the problem of greening the city, but it will help to significantly enrich the composition of tree and shrub plants.


Plant Disease ◽  
2000 ◽  
Vol 84 (5) ◽  
pp. 593-593 ◽  
Author(s):  
M. R. Williamson ◽  
J. H. Blake ◽  
S. N. Jeffers ◽  
S. A. Lewis

In September 1999, royal ferns (Osmunda regalis L.) at a South Carolina wholesale nursery were found to be infected by foliar nematodes. Lesions were brown, vein-limited, and often fan shaped. As severity increased, affected leaflets became totally necrotic. Nematodes were extracted by excising and dicing symptomatic leaf sections and placing them in water for up to 24 h. Ten adult nematodes from each of two fern plants were examined microscopically and determined to be Aphelenchoides fragariae (Ritzema Bos) Christie. This is the first report of this nematode infecting royal fern. In August 1996, leaves from several cultivars of Hosta spp. with yellow to tan, vein-limited lesions were submitted from The South Carolina Botanical Garden (Clemson, SC) to the Clemson University Plant Problem Clinic for diagnosis. Nematodes were extracted and examined as described above and identified as A. fragariae. This is the first report of this nematode infecting Hosta spp. in South Carolina. Since 1996, foliar nematodes have been recovered from hostas at several wholesale nurseries in South Carolina. Aphelenchoides spp. also have been detected previously in commercially produced ornamental plants in South Carolina, including a Begonia sp. in 1988; Polygonum bistorta L. ‘Super-bum’ (snakeweed) in 1997; and a Polystichum sp. (holly fern) in 1997. All plants exhibited angular or vein-limited, necrotic lesions typical of foliar nematode infections.


2021 ◽  
Vol 13 (1(22)) ◽  
pp. 53-58
Author(s):  
Natalia Toderas ◽  

The article discusses the possibility of using representatives of the genus Fuchsia L. as outdoor ornamental plants, in summer, in container gardening. The main features of vegetative propagation of several species and hybrids of this genus have been identifi ed. The most promising ones have been identifi ed and evaluated.


2021 ◽  
Vol 25 (1) ◽  
pp. 53-63
Author(s):  
I.Yu. Bochkova ◽  
◽  
Yu.A. Khokhlacheva ◽  

This article presents the results of work on the selection of groundcover plants (both light-loving and shade-tolerant) that are promising and very promising for use on landscape architecture objects. The work was carried out during 2018 on the basis of the collection Fund of the laboratory of ornamental plants of the Main Botanical garden (MBG RAS), on two experimental sites located on the main territory of the MBG RAS, in the collection-exhibition «Shadow garden» and on the exhibition area «Decorative perennials». A total of 225 plants were selected during the study. During the growing season, field surveys of experimental samples were systematically performed and phenological observations were made. Field studies included biometric measurements of the height of the Bush and peduncle, the diameter of the Bush, the diameter/length of the flower/inflorescence, as well as refinement of the color of the flowers/inflorescences (using a special color scale of the English Royal society of flower growers (RHS color Chart)). The result of this work is a list that includes 40 names. These are very promising and promising species that we recommend for use in urban gardening.


2010 ◽  
Vol 5 (2) ◽  
pp. 1934578X1000500 ◽  
Author(s):  
Alessandra Bertoli ◽  
Szilvia Sárosi ◽  
Jenő Bernáth ◽  
Luisa Pistelli

The aromatic profiles of five commercial thyme cultivars (T. vulgaris ‘Silver Poise’, T. vulgaris ‘Erectus’, T. vulgaris ‘Faustini’, T. × citriodorus ‘Anderson's Gold’, and T. × citriodorus ‘Silver Queen’), cultivated in Italy, were defined both by their static headspaces (HS) and essential oils (EOs). In addition, a botanical garden sample of T. vulgaris was considered as reference material to evaluate the morphological and phytochemical differences from the selected market samples. Extractions of the volatile constituents of the different plant material were carried out by SPME (static headspace, HS) and hydrodistillation (HD) processes. GC-MS analysis provided the separation and identification of approximately 70 components in the HS samples and 50 in the hydrodistilled essential oils, accounting for more than 95% of the total. The typical main constituents of T. vulgaris were detected in all the EO samples, although qualitative and quantitative differences were found among the selected ornamental Thymus varieties. Thymol (50-55%) was the marker constituent for the three T. vulgaris cultivars, while geraniol (61-67%) characterized the essential oils of the two T. × citriodorus varieties. In all the analyzed essential oils, non-oxygenated (16-79%) and oxygenated (5-26%) monoterpenes were the typical volatile constituents. Specific target compounds (thymol, geraniol and 6-methyl-5-hepten-2-one) were selected to characterize the five thyme cultivars that are considered at present only as ornamental plants. A comparative evaluation of their EO quality was carried out in order to propose them as alternative sources of Italian raw plant material for industrial production.


2020 ◽  
Vol 85-86 ◽  
Author(s):  
G.Y. Honchar ◽  
A.M. Gnatiuk

The aim of our study was to assess the attraction and value of flowering plants at green areas in support and sustenance of wild bees (Hymenoptera, Apoidea) populations in Kyiv. Study objects were the most common flowering ornamental plants of the city and the wild bees visiting their inflorescence during the vegetation season to collect pollen and feed on nectar. Study was conducted at 16 areas of observation and material collection, which include urban parks, M. M. Gryshko National Botanical Garden, green spaces of residential areas, roadsides, etc. Insects were collected following the standard method of catching individual specimens during spring and summer periods of 2012–2018. Based on the observations, we visualized trophic relations of bees with plants and calculated the biodiversity index of visiting insects for plants. Periodicity of florescence was analyzed using phenological data. Examination of urban green areas revealed ornamental plants that were the most attractive for bees, including more than 35 taxa of 20 families of trees, shrubs and grassy plants. Bees are superiorly attracted to plants of the genera Rudbeckia, Sedum, Gypsophila, Cerasus, Tagetes, Spiraea, Lonicera, Aesculus. There is a succession of plant flowering during spring-summer season, which must be considered while planting of greenery. Certain plant species attract insects at each period of inflorescence period, for example, Prunus, Rhododendron, Crataegus, Aesculus in spring, most of Asteraceae in summer. The diversity of blossoming plants is significantly lower to the end of summer and beginning of fall, coinciding with the decreasing flight activity of wild bees. Overall, the studied ornamental plants not only attract the most common species of wild bees, but also highly specific and rare species such as Bombus argillaceus and Xylocopa valga, protected by the Red Data Book of Ukraine. We found that blossoming green areas, made up by trees, shrubs and herbs ornamental plants, are important for feeding of many species of wild bees and sustaining their populations in urban conditions.


HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 681b-681
Author(s):  
Shujun YU

The author investigated, recorded, observed and analyzed the major wildflowers in Mount Huangshan---the natural and cultural heritages listed by the ESC0 of UN for the first time. On the basis of their desirable characteristics, more than 300 wild ornamental species are divided into 8 categories -–-historical old trees, rare and endangered species, evergreen ornamentals, blooming trees and shrubs, plants with colored foliage and fruit in fall, vines, herbaceous ornamentals and ground covers, and ornamental ferns. Mount Huangshan is one of the richest regions of native ornamentals in Eastern China and the most famous natural beauty in Pan-China. There are about 1500 wild landscape plants in and around it. Finally the paper puts forth some proposals and methods for introduction and utilization of wild ornamental plants. That is, investigation, classification,acclimatization and cultivation of them, and building a sort-out botanical garden for the germplasmic preservation and the flourishing landscape tourism.


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