03.00.00 Biological sciences
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Description
Complicated compost with organic and mineral components, has a serious impact on the physical, chemical and biological properties of topsoil significantly modifies its cycles of elements and substances; with the Carboniferous and up to now it has been established the supremacy of the recovery processes in landscapes as compared to oxidation processes through the introduction of complicated compost in their stabilizing factors
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Description
The analysis of territorial protection of the vegetation of natural zones, separate geobotanical allotments (formations), unique vegetative associations and Red Data Book species of vascular plants of Yakutia is given in the article. The objects of vegetation kingdom that need urgent actions for their habitats’ protection are marked
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Description
Study results of Crambe maritima L. growth and development at introduction in Botanical garden of SFU are presented in article. It was revealed that the life cycle of majority specimens lasts three years. Results the ontogenetic and phenologic studies testify about success of primary introduction of Crambe maritima
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Description
The article discusses the growth and development of gerberas varieties of Dutch and Turkish breeding on different substrates when growing them in volumetric technologies in the conditions of glass-covered ground
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Description
The article presents the results of studying the growth-stimulating activity of the microorganisms of the genus Bacillus of leaf surface microflora arboreal plants in Stavropol. Isolated and identified strains of epiphytic microorganisms of the genus Bacillus with the leaf surface of plants: Quercus robur L., Carpinus caucasica Grossh., Fraxinus excelsior L., Acer campestre L.. Growth stimulating properties of 43 strains of aerobic spore-forming bacteria (Bacillus subtilis, Bac. megaterium, Bac. pumilis, Bac. cereus, Bac. Licheniformis) are researched. Selected strains are potentially promising in the development of microbial preparations for plants. A regional collection of strains of epiphytic organisms was formed
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DUCKWEED – A PERSPECTIVE VEGETABLE PLANT
DescriptionThe questions of use duckweed as green vegetable are considered in article. The structure of types of duckweeds, their biological features, distribution in the world and in the territory of the Krasnodar region is shown. Possibility of their use as biotesters and bioindicators of the water environment, as analytical system for the analysis is shown. Questions of use of duckweed in artificial conditions as well as requirements to the content of culture are considered
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SANITARY CONDITION OF TREES IN URBAN PLANTINGS (ON THE EXAMPLE OF VORONEZH)
DescriptionThe article presents a comparative analysis of the sanitary condition of green plantings in park area and street network of trees of local forest origin and exotic species
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PROPERTIES OF FOREST SEED SAMARA, WITHOUT PTERYGOID APPENDAGES, LEGUMES AND WITHOUT PERICARP
DescriptionProperties of forest seeds are the basic and initial data for substantiate technology and technical means constructions, to separate the seeds from the samaras and extraction them from the legumes, and also to substantiate constructive, technological parameters and operating modes of seed-cleaning machines. So far, there are not enough full information about the technological and mechanical properties of forest seeds, this makes it difficult substantiation and developing new technologies and technical means, in particular, to separate the seeds from samaras hardwoods and extracting legumes from the leguminous trees. The article presents the results of studies of technological and mechanical properties of forest seeds with samara and without pterygoid appendages: Norway maple, ash and elm ordinary, as well as legumes: honey locust, white acacia, acacia yellow and pure seed. Were studied: weight of 1000 seeds, volume weight, mass and volume coefficients, angle of repose, the coefficient of static friction and the coefficient of dynamic friction of the various working surfaces, holding strength samaras to forest seeds and strength of legumes pods. The data obtained are used for substantiate technology and technical means constructions, to separate the seeds from the samaras and extraction them from the pericarp
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SEGREGATION OF THE PLANT HEIGHT AT INTERSUBSPECIES HYBRIDS OF THE SECOND GENERATION RICE
DescriptionThe article presents the results of the genetic analysis of the trait ‘plant height’ for six crosses involving the forms related to different subspecies of rice. There have been estimated the types of inheritance and a number of genes, which assist to determine this quantitative trait. We have found out that the variance of the trait ‘plant height’ is determined by 3-5 pairs of genes having additive and dominant activities and the degree of dominance reduces in case the variance among parental forms increases. The non-allelic interaction of the genes of the initial forms produces transgressive dwarf and tall forms. The cross ‘Lampo’x’Virazh’ showed the highest degree of transgression in ‘plant height’ due to short height of both parental forms (61.7%), but the frequency of transgression was larger than that of the cross ‘Lampo’x’Komandor’(17.6%). This combination (‘Lampo’x’Komandor’) produced more tall forms (up to 135 cm). The segregation of a great number of tall forms into F2 testifies that the parental forms of these hybrids vary in the allelic state of several pairs of genes, whose various combinations form phenotypes with a longer stem. Thus, the semi-dwarf feature of the varieties ‘Lampo’, ‘Komandor’ and ‘Virazh’ is determined by various non-allelic genes
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EVALUATION OF SELECTION OF TREES OF SALIX ACUTIFOLIA WILLD
DescriptionIn order to identify high-genotypes in natural stands of Sacutifolia Willd we worked to identify the categories of breeding trees. Experimentally proved, that for breeding to increase the productivity of bark of Salixacutifolia Willd the selection would be best carried out with plants, the diameter of the barrel of which is in the range of 9 to 16 cm, tree age 15 - 19 years