Biology

Morphobiology and assessment of the introduction possibilities of Leonurus cardiaca L.

Authors: Pikalova E. V., Kukhlevskaya Y. F.

The data on the study of morphometric parameters of one of the most valuable medicinal plants – Leonurus cardiaca L., growing in the collection site of medicinal plants of the Botanical garden of the OSU are presented. The parameters of samples, obtained from the cities of Samara and Kazan were compared . All the studied plants have passed the full cycle of their development with the formation of viable seeds. It is established, that the studied species adapts well to new growing conditions, while the morphometric parameters vary within the middle – very high levels of variability.

Phytochemical composition in the vegetative organs of Hemerocallis hybrida hort. ex Bergmans (Hemerocallidaceae)

Authors: Sedelnikova L. L., Kukushkina T. A.

The article presents the results of the study of raw materials (sugar, starch) and biologically active substances (pectin substances, catechins, saponins, flavonols, ascorbic acid) in the leaves and rhizomes of Hemerocallis hybrida plants of the Speak to me variety during seasonal development during 2013–2015. The quantitative content of the main groups of substances in underground and aboveground organs during vegetation, flowering and fruiting was determined.

Special features of fruiting in some Clematis L. cultivars from the collection of the Nikita Botanical Gardens

Authors: Zubkova N. V.

The article presents the results of studying the fruiting in 9 clematis cultivars under the conditions of the southern coast of Crimea. Morphometric characteristics of seeds, their weight and germination capacity are given. Potential and real seed production was assessed. It was found that the studied cultivars are characterized with high potential seed production, on average from 38.1 to 116.9 ovules per fruit, but relatively low real seed production, on average from 1.3 to 8.3 seeds per fruit.

Impact of environmental conditions on the vitality structure of the cenopopulations of the dominant tree tier in the forests of the southern part of the Volga Upland

Authors: Samsonova A. M.

The vitality structure of cenopulations of woody plants is formed under the influence of ecological, cenotic and anthropogenic influences. The study of the nature and degree of influence of the ecological parameters of the habitat will make it possible to predict the formation of the vitality structure of woody plants. The objects of study are individuals of the generative age state of three species of woody plants: Quercus robur, Tilia cordata, Acer platanoides. Environmental conditions of habitat were assessed by using range ecological scales.

Photocatalytic effect of led radiation (405 nm) and new Al2O3 3D-nanocomposites on the growth of Staphylococcus aureus

Authors: Svetlakova A. V., Tuchina E. S.

The progressive growth of bacterial resistance to antibiotic drugs requires the creation of highly efficient nanomaterials. Aluminum oxide is a stable non-toxic semiconductor material; however, the photocatalytic properties of its modifications in relation to microorganisms are not well understood. In this study, we used new 3D composites of aluminum oxyhydroxide (Al2O3 × nH2O) in three modifications (γ, α and θ), which are a mesh of 150 nm nanofibrils. The assessment of the photocatalytic antibacterial properties of the composites was carried out on the museum strain S. aureus 209 P.

Additions to the «Flora...» by P. F. Maevsky (2014) for the Penza Region

Authors: Vasjukov V. M.

 Records of 94 vascular plant species from the Penza Region published before 2013 are missing from the 11th edition of the «Flora of the Central Part of European Russia» by P. F. Mayevsky (2014). An additional 22 species were discovered in the region recently. At least 29 species known in the Penza Region are completely missing from the «Flora…» – Stellaria subulata Boeber ex D. F. K.

Features of selection of winter wheat on grain quality

Authors: Kulevatova T. B., Lyashcheva S. V., Zlobina L. N., Starichkova N. I.

The quality of grain means a set of technologico-biochemical, baking and food properties determining the economic value of a grain variety. When choosing source material for selection, the degree of grain preservation in adverse environmental conditions is taken into account as well as the genotypic potential of grain yield and quality.

Winter months’ temperature rises effect on duration of phenological phases for Spermophilus pygmaeus Pallas, 1778 populations located in Caspian depression (Astrakhan oblast)

Authors: Magerramov S. V., Marcocha К. S., Mandzhieva V. S., Yakovlev S. A., Popov N. V.

This article provides comparison analysis between 1950–1959’s and 2000–2009’s periods for duration and schedule dates of awakening, spreading and hibernation phases for Spermophilus pygmaeus populations located in the Caspian Depression (by example of Astrakhan Oblast). We learned that within a period of maximum temperature rise in February 2000–2009’s durations of S.pygmaeus’ populations of every phonological phase have shortened and been rescheduled with earlier dates (in comparison to 1950–1959’s).

Antibacterial properties of a biologically active composite based on glauconite

Authors: Venig S. B., Chernova R. K., Serzhantov V. G., Rusanova T. Y., Mikerov A. N., Shapoval О. G., Glushakov i. A., Selifonova E. I., Naumova G. N.

Glauconite, a natural aluminosilicate, exhibits good sorption properties, is an affordable, cheap material, and has the prospect of being used in construction, ecology, medicine, cosmetology, animal husbandry, poultry farming, agriculture, etc. An urgent task is to study the sorption activity of glauconite in the Beloozersky deposit in the Saratov region in relation to biologically active substances for the creation of antimicrobial composites. The elemental composition and surface morphology of glauconite grains are determined.

Introduction of sorts of Clematis L. genus in the South-Ural Botanical Garden-Institute of UFRC RAS

Authors: Bilalova R. A.

The article presents the results of a long-term of study of biological features of 54 sorts of Clematis L. genus of collection of the SouthUral Botanical Garden-Institute of UFRC RAS. The aim of the work was to summarize the introduction studies for the possibility of successful use of clematis sorts in vertical gardening in the Bashkir Cis-Urals and adjacent territories. During the period 2007 and 2015, the seasonal rhythm of growth and development and vegetative reproduction were studied, and the prospects of introduction and introduction resistance under the culture were assessed.

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