scholarly journals Morpho-anatomical aspects of the firstand-second year leaf epidermis of some Rhododendron L. winter-green species in the Bugsko-Polessky Region

2017 ◽  
Vol 6 (1) ◽  
pp. 14-19
Author(s):  
Yulia Vladimirovna Bondar ◽  
Sergey Vladimirovich Zerkal

This paper discusses morphological and anatomical aspects of the first-and-second-year-leaf epidermis of the two winter-green species, genus Rhododendron L.: R. catawbiense Michx. and R. davidsonianum Rehd., grown in the Bugsko-Polessky Region from the seed reproduction of the Central Botanical Garden of the National Academy of Sciences of Belarus. The representatives of the studied genus are promising crops for planting gardens, settlements and interiors. Therefore, the study of leaf anatomy lets to find plants adaptive features to different environmental conditions and identify their adaptation capacity in the new conditions of growth. The paper identified diagnostic features, as well as similarities and differences of morphometric parameters. The research method was a comparative anatomical one. The author made a code of diagnostic features of the leaf anatomical structure, which described the views of cross sections. The character of the natural confinement species lays its mark on the formation of individual elements of the leaves structure, ensuring their successful adaptation to the new conditions of growth. The studies have shown that both species quite successfully acclimatized and are promising for mass reproduction and wider use in the Bugsko-Polessky Region, and this is supported by qualitative and quantitative indicators of the morphology and internal leaf structure.

Author(s):  
S. Kovtun-Vodyanitska

The studied was ultrasculpture of seed surface of 2 representatives of the genus Isodon (Schrad. ex Benth.) Spach from the family LamiaceaeLindl.– I. japonicus (Burman) H. Hara and I. japonicus (N. Z. Burm) Hara var. glaucocalyx (Maxim.) H. W. Li, introduced in the M. M. Gryshko National Botanical Garden National Academy of Sciences of Ukraine (Right-bank Forest-steppe). Representatives of the genus are common in the Asian region with the greatest species diversity in China; 2 species are found in the tropical regions of Africa. Screening of literary foreign sources showed that microscopic studies of the seeds of the species and variate did not occur, at least we did not find any information on this issue. This prompted us to investigate the macro- and micromorphology of the seeds. SEM was used in the work. Methodically guided by the well-known work of W. Barthlott. The descriptive part is documented photographically. As a result of the experiment, features in morphology and structure, common and distinctive features of seeds, morphological descriptions of their shape, color, primary and secondary sculpture of spermoderm are revealed. It has been established different types of external relief for species and the variete: for I. japonicus, a characteristic densely hilly relief, and for I. japonicus var. glaucocalyx– irregularly-mesh.Also revealed differences in the structure of the outer periclinal and anticlinal walls. The outer periclinal walls of the species are convex, anticlinal concave, and in the variate– concave and protruding respectively. The spermoderm of the seeds I. japonicus var. glaucocalyx is characterize by the presence of various types of papillomas in the apical region and stomatal cells, the significance and function of which still need to be further investigated. Differences in the microrelief of the seeds can be used as auxiliary diagnostic features at the species taxonomic level for plants of the genus Isodon, obtained under conditions of introduction from the seeds of the Index Seminum system.


Author(s):  
L. V. Zavadskaya

Data on a genus of the Daffodils have been given in the article. The areas of species have been designated. Dates of selection work for the Daffodils have been determined. Countries and number of plant breeders of the Daffodils have been presented. The first cultivar of the Daffodil with pink crown has been specified, too.Group accessory for the 55 Daffodils from the collection of the Central Botanical Garden of NAS of Belarus has been defined. The age and authorship of the studied cultivars have been established. Assessment of their biological features in the conditions of the Central area of Belarus has been carried out. Periods and duration of some phenological phases have been established. Height of plants and sizes of flowers have been estimated. Periods of the Daffodils with a pink crown blossoming have been established. The abundance of blossoming depends on cultivar’s features and duration of their cultivation without grafting. The flowers of Daffodils with a pink crown have been measured from 6.5 to 11.5 cm. For the long-cupped Daffodils sizes and forms of crowns are various. The multiplication factor during the three years cultivation fluctuates from 5 to 16 units. Grades are rather steady in local conditions against diseases and pests.From studied cultivars the 13 best ones have been recommended for cultivation.


2020 ◽  
Vol 21 (2) ◽  
pp. 254-262
Author(s):  
Koval Inna

The content, component composition, and main directions of the use of monoterpenes of wild rose petals compounds are considered in the research. The study on six wild rose species was carried out in the collection of M.M. Gryshko National Botanical Garden of the National Academy of Sciences of Ukraine. Volatile organic compounds were isolated by steam distillation, and their determination was performed by means of gas chromatography. R. rugosa petals contained the highest number of monoterpenoids, while R. canina petals – the lowest. In our research twentyone different (acyclic, monocyclic, bicyclic) monoterpenoids were identified, including alcohols, aldehydes, ethers, and ketones. All groups of monoterpenoids are biologically active substances and have a significant effect on the aroma of the studied plants.


Author(s):  
Dmitry V. Kochkin ◽  
Elena S. Glagoleva ◽  
Boris A. Galischev ◽  
Elena V. Spiridovich ◽  
Alexander M. Nosov ◽  
...  

For the first time, a detailed study of the qualitative and quantitative composition of ginsenosides in the Panax ginseng roots was carried out with the help of high-performance liquid chromatography combined with mass spectrometry (HPLC-MS). The plants were introduced into the conditions of the Republic of Belarus at the experimental plot of the Central Botanical Garden of the National Academy of Sciences of Belarus. It was found that in the examined roots, all basic neutral glycosides of ginseng (ginsenosides Rb1, Rc, Rb2/Rb3, Rd, Rf, Rg1 and Re), as well as their malonylated derivatives (malonylginsenosides Rb1, Rc, Rb2/Rb3, Rd, Rg1 and Re) and some “minor” ginsenosides (20-gluco-ginsenoside Rf, notoginsenosides R1 and R2, isomers of malonyl-ginsenosides Rb1 and Rd) are present. The research also showed that different parts of the P. ginseng roots differ significantly in a total content of ginsenosides: for the main root, this parameter was 3.3 % of dry mass, and for the lateral roots – 7.8 % of dry mass.


Author(s):  
R. I. Karaneuski ◽  
U. I. Torchyk

The article contains information on the presence and vital state of the natural renewal of 10 species of fir growing on the territory of the Central Botanical Garden of NAS of Belarus.Under the conditions of introduction, the investigated species of fir give a viable self-seeding, though not always abundant and uniform. The best indices of height and diameter of the root neck of different ages are the shoots of A. nordmanniana and A. sibirica. A. alba, A. nordmanniana and A. sibirica have the largest number of self-sowing adults of the older age group. In all investigated firs, the vital state of the shoots is estimated as healthy.


Author(s):  
S. V. Tsekhanovich

Recently, with the development of decorative gardening and landscape design, the extension of the assortment of floral and ornamental plants including perennial plants becomes relevant. chrysanthemum Korean – one of the most promising crops for flower decoration of the cities of Belarus, characterized by long flowering periods, unpretentiousness at cultivation, accessible ways of reproduction ways of plants, a wide variety of varieties. In the article present a modified method of comprehensive assessment of chrysanthemum Korean (Chrysanthemum coreanum), recommended for use in industrial landscaping. The method is based on 11 decorative and biological qualities: stability of flower coloration, duration and stability of flowering plants, number of inflorescences, height and shape of the plant, number of leaves on the stem, winter hardiness of plants, resistance to diseases and pests, ability of plants to vegetative reproduction, preservation of decorative qualities without plant transplantation which are important for industrial cultivation of plants. Each qualities is evaluated on a 3-point scale. The sum of points determines the perspective of the variety for use in gardening. Varieties of chrysanthemum that received 27 points or more are very promising plants, 19–26 – a promising plants, below 18 points – to the unpromising plants.The method was used on a collection of chrysanthemum Korean of the Central Botanical Garden of the National Academy of Sciences of Belarus. Based on this technique, perspective plant varieties were selected for the green construction of Belarus.


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