bluuebunny/crossref_metadata_2025_split huggingface dataset:
Identification of rare quantitative traits of leaf and a flower in Rosa L. and analysis of correlations
Authors: Kryuchkova V A , Aniskina T S , Pokinchereda A M , Donskih V G 
Published: April 2021

Abstract
The article examines the quantitative traits of leaves and flowers in 49 varieties of roses from the collection of the Tsytsin Main Moscow Botanical Garden of Academy of Sciences. The method for determining the coefficients of originality of Smirnov made it possible to identify unique and typical gradations of traits that are important for directional selection. The varieties Snowflake, Peer Gynt, Akito Blushing, Mainzer Fastnacht, Heidelberg, Troika are the most original in terms of their complex of characteristics. Pearson’s method of correlation analysis showed positive relationships between leaf traits.
Promising varieties of black currant in the phytosanitary technology of the Trans-Urals
Authors: Morkovina V A , Porsev I N , Sozinov A V , Polovnikova V V , Karpova M V 
Published: April 2021

Abstract
Currant is a light-loving and moisture-loving plant. Under natural conditions, it grows on moist soils along the banks of rivers and streams. In collective and private gardens, black currant takes a leading place. On average, over three years of research, a different distribution of the most harmful diseases on currant varieties was noted, which led to a decrease in yield for the Sybille variety to 5.95 t / ha, the variety was in the control group, the Venera variety - 6.09 t / ha, the average yield of the Rusalka variety - 6.76 t / ha, Slavyansk - 7.23 t / ha, Vologda - 7.79 t / ha. A high yield was obtained for the varieties Kushnarenkovskaya - 8.19 t / ha, Dachnitsa - 8.27 t / ha, Relay - 9.26 t / ha. A decrease in the yield of varieties, in addition to weather conditions, is due to different resistance to pests and diseases. Currant varieties were affected to varying degrees by American powdery mildew, anthracnose, septoria blight, goblet and columnar rusts.
Normalization of the symbiotic intestinal microflora of sturgeon’s juvenile with the introduction of a new generation of probiotic preparations into their diet
Authors: Zhandalgarova A D , Bakhareva A A , Grozesku Yu N , Fedorovykh Yu V , Sergeeva Yu V 
Published: April 2021

Abstract
Modern aquaculture is characterized by new approaches to the fish maintenance in conditions of high stocking density, associated with the restoration of the natural ecology of the body and based on the use of biologically active products. One aspect of this approach is to normalize altered the microbial environment of the organism in water of a recirculating aquaculture system with probiotics. Probiotics have the ability to regulate the microbiocenosis of the digestive tract, making a significant contribution to the absorption of nutrients. The use of probiotics can solve a number of problems related to the physiological state of animals and fish, increasing the efficiency of digestion, stimulating growth and development. Probiotic preparations of the new generation include probiotics “Ferm-KM” and “ProStor”, which are sorbed forms containing bacteria immobilized on solid sorbent particles. The article presents the results of the use of probiotics “Ferm-KM” and “ProStor” in the composition of production compound feeds for sturgeon fish. It was found that the use of new generation probiotic preparations in the diet of sturgeon fish contributes an increasing in the number of beneficial microorganisms in the intestine (up to 8.5x107 CFU/g) of Russian sturgeon. The effectiveness of introducing a new generation of probiotics into the compound feed for sturgeon fish has been proven, which contributes to increasing the resistance of the macroorganism to pathogenic microorganisms, improving the functioning of the digestive system. Probiotic strains introduced with preparations interact with the community of intestinal bacteria, releasing metabolites that affect the digestive, immune and hormonal systems of the body.
Variety and microbial nitrogen-fixing preparations in the yield formation of variegated alfalfa
Authors: Ivanova E P , Skalozub O M 
Published: April 2021

Abstract
As a result of studies of two variegated alfalfa fodder varieties selected by the FWRC FPA (Previously All-Russian Williams Fodder Research Institute) and the local population variegated alfalfa variety, it was found that Vega 87 formed a lower yield of green mass in the first year of growth. The yield of the Pastbischnaya 88 variety of the local population was 16 % higher; the superiority of both varieties over the variety Vega 87 was by 50 and 60% in the second year, and 13-15% in the third year of growth. Variegated alfalfa provided the following green mass harvest over the three years: Vega 87 - 31.55 t/ha (the lowest harvest), Pastbischnaya 88 - 39.55 t/ha, local population variegated alfalfa - 40.8 t/ha. The positive effect of inoculation with virulent active strains of the nodule bacteria on the total (per five cuttings) harvest of green mass was expressed in its increase in the experimental variants by 5.04-10.17 t/ha (6.8-13.7%) compared to the control variant. With the aim of adaptive intensification of fodder production, the creation of stable agrophytocenoses with variegated alfalfa with inoculation of seeds with virulent active strains of nodule bacteria is shown (the main production strain 425a showed best results).
In vitro micropropagation of wild rare plant Rhododendron ledebourii Pojark
Authors: Khlebova L P , Mironenko O N , Brovko E S 
Published: April 2021

AbstractRhododendron ledebouriiPojark. is a highly decorative rare species of the flora of Siberia (Russia) and can be used as a source of biologically active substances, as well as in landscaping. We have optimized the in vitro propagation protocol for this species. Sterilization of annual shoots of field plants with 5% lysoformin-3000 provided 70% aseptic viable explants. The addition of 2 mg L−1glycine to Anderson’s medium in combination with 8 mg L−12-isopentyladenine and 3 mg L−1indolyl-3-acetic acid stimulated a high multiplication rate and active growth of axillary and adventitious shoots. The adaptation of regenerants in a hydroponic installation containing ¼ of the basic composition of macro- and microsalts according to Murashige and Skoog’s medium promoted the development of powerful roots for subsequent successful acclimatization to ex vitro conditions. This approach ensured the survival rate of 90% microplants.
Research of garden sprayer machines of near-stem and inter-stem strips of orchards
Authors: Rogovskii I L , Titova L L , Maksimovich K Yu , Ohiienko M M , Smelik V A , Scherbakov A P 
Published: April 2021

Abstract
The article presents the results of experimental studies of industrial application in the trunk and intert stem strips of orchards of a chemical treatment machine with spray sections, which are equipped with additional sprayers directed in the direction of the location of the protective and intert stem strips. The authors reproduced an experiment to determine the density of the coating of droplets on the surface of cultivation depending on the distance relative to the centerline of a number of trees with a full cycle of cultivation of the trunk and trunk strip at work: section sprayers; additional spray; all sprayers section. The authors confirmed the technological capabilities of the developed machine in comparison with modern chemical treatment of stem and interstitial strips, in terms of reducing the cost of the active protective chemical. The optimal parameters of additional sprayers are set. The authors in the article confirmed that the spray sections work in three modes depending on the required width of the treatment of the stem and interstore strip. The width of the treated strip during the operation of the section with one spray is 0.5-1.0, with two 1.0-1.5, with three is 1.5-2.0 m. In addition, the quality assurance of the technological operation of the chemical processing of orchards.
The Influence of different growing modes on the physiological state of mulard ducks
Authors: Fedota Natalia , Gorchakov Eduard , Kizilova Natalia , Gulyan Kristina , Bagamaev Bagama , Taranukha Nadezhda 
Published: April 2021

Abstract
This paper discusses the use of feed additives with the addition of amino acids containing methionine and cysteine. To study the effectiveness of the use of feed additives, one of the main functional systems of the body of any animal, blood, was monitored. In confirmation, blood samples were taken for hematological and biochemical examination. It is shown that in the first months of use there is an increase in the weight of ducks, and in the period of egg production there is a decrease in productivity. Reduced productivity is associated with the preparation and restructuring of the body for egg production. New approaches to the development of feed additives are needed to assess the state of health and predict the quality of products. Great importance is given to standard methods of studying and identifying certain patterns in the clinical, anamnestic, morphological, metric and anatomical parameters of the bird body.
New model systems for RNA interference in plants to develop eco-friendly and effective antipathogenic tools
Authors: Urin A V , Golubeva T S 
Published: April 2021

Abstract
The methods which are used to combat pathogens of crops, in particular, chemical treatment, pose a threat to environmental safety. RNA interference could be one of the best ways to selectively control pests, but there are not enough methods for introducing dsRNA into plants without creating GMOs. The development of new methods of dsRNA delivery requires affordable and fast gene model systems, the purpose of which is our work. We selected the genes of several carbonic anhydrases functioning in the thylakoids and mitochondria of the whole plant, the suppression of which will be seen phenotypically based on the data on mutants for these genes. Specific primers have been designed, and a PCR reaction has also been carried out to obtain the product of the corresponding mRNA, which will be delivered to the plant in the future using the VIGS system.
Effect of meliorative doses of phosphogypsum on the agrochemical properties of the soil and the yield of sunflower
Authors: Denisov K , Upolovnikov D , Poletaev I , Linkov A 
Published: April 2021

Abstract
The influence of meliorative doses of phosphogypsum application on agrochemical soil properties and sunflower yield was studied. The results of experiments carried out in the Volga region on light chestnut soils are presented. It was revealed that the content of heavy metals for all variants of the experiment did not exceed the approximate permissible concentration; application of phosphogypsum shifted the reaction of the soil environment towards neutral. The use of this agricultural technique increased the content of nutrients in the soil and labile organic matter, most of all, this was noted in the variant with a phosphogypsum dose of 8 t/ha. It was concluded that the combined application of mineral fertilizers and phosphogypsum at a dose of 4 t/ha leads to a significant increase in yield by 0.65 t/ha. The use of phosphogypsum as an ameliorant solves the environmental problem of utilizing wastes after the production of mineral fertilizers accumulated in the Russian Federation in the amount of about 50 million tons. The studies carried out have confirmed the soil-improving and fertilizing properties of phosphogypsum, as well as its environmental safety.
Influence of subwinter sowing period of spring wheat on efficiency of using water component in arid conditions of Orenburg Cis-Urals
Authors: Khalin A V , Solomatin N V 
Published: April 2021

Abstract
In the arid conditions of agriculture in the Orenburg Cis-Urals, the level of development of crop production and the state of agriculture as a whole largely depend on the water component. The applied technologies and methods of soil cultivation do not ensure the most efficient use of water resources and the natural potential of the region. In order to develop and improve technologies for the effective use of the water component in arid agricultural landscapes, the article studies the use of available water resources by spring wheat sown in the traditional spring and subwinter way.
Reproduction of ewes depending on their behavior when consuming feed
Authors: Khodykov V P , Mescherov R K , Kedeeva O Sh , Ubushieva A V , Chimidova N V 
Published: April 2021

Abstract
The article presents data on the study of reproductive and productive characteristics of sheep of the Grozny fine-fleece breed of different types of eating behavior (PP) in terms of autonomic-nervous activity (GNI). The dispersal of experimental bright colors according to the types of PP into the experimental groups was carried out according to the methods generally accepted in zootechnics by D.K. Belyaeva, V.N. Martynova (1973), V.S. Zarytovsky and others (1990). The principle of selection of individuals is to determine their passive-defensive, orienting reactions in an unusual environment of feed consumption. Scientific and production observations were carried out in the conditions of a specific agricultural enterprise in the Republic of Kalmykia. Our studies indicate that under identical feeding and keeping conditions of bright birds, the highest live weight (40.5 kg) is observed in individuals of the 1st type of PP, while among their peers it was lower by 2.7 and 5.3, respectively. kg. The sex dominant in type 1 flies of PP was much more pronounced, since they entered the state of the first hunt more intensively by 16.6 and 27.2%, respectively, than their counterparts from types 2 and 3. The peculiarities of the behavior of replacement birds at the time of feed consumption were reflected in their subsequent reproductive capacity. Thus, the highest reproduction (110%) of the number of ewes who had clung to ewes had individuals of the 1st type of PP. The lowest fertility (90%) had uterus of the 3 behavioral type. The wool productivity of ewes of different types of feeding behavior was characterized by rather high variability. For example, shearing wool from type 1 ewes PP turned out to be 4.9 and 7.7% more than in type 2 ewes. Survival of offspring by the time of beating and the yield of lambs per 100 ewes that have been clung to each other, depending on the type of PP, varies within wide limits. The highest mortality rate of young animals (11.8%) was observed in queens of the 3rd type of feeding behavior, while the indicators of obtaining offspring (44 heads), survival and yield of lambs per 100 ugly queens in the first group of the 1st type of PP were 100%. In the conditions of sheep farms in the Republic of Kalmykia, in particular in its eastern zone, in order to increase the brood stock, increase the reproductive capacity and productive qualities, it is necessary to use the type of feeding behavior when consuming feed as a “marker” of their selection for the repair and formation of brood stock.
Effect of plant growth regulators on the induction of peach resistance to leaf curl
Authors: Mikhailova Ye V , Karpun N N 
Published: April 2021

Abstract
The article presents data from studies of the effect of growth regulators when applied for three years in peach plantations in the humid subtropical zone of the Black Sea coast of Russia. The influence of drugs (Zerebra® Agro (colloidal silver + polyhexamethylenebiguanide hydrochloride), Epin-Extra® (24-epibrassinolide) and Biosil® (triterpene acids)) on the degree of development of peach leaf curl (pathogen – Taphrina deformans (Berk) Tul.) was analyzed. The preparations were used in pure form and in combination with fungicides, the dosage of which was two times lower than in the standard. Already in the first year of the experiment, an increase in the resistance of the peach to leaf curl was noted. The maximum biological efficiency (up to 80.3%) in relation to leaf curl was observed when using Zerebra Agro in a tank mixture with fungicides. An inverse correlation was established between the degree of development of leaf curl and the level of antioxidant system enzymes activity (catalase and guaiacol peroxidase), which confirms the immunity-inducing effect of the growth regulators use.
Creation of new high-sugar forms of sweet sorghum as a source of raw materials for the production of bioethanol in the conditions of Submontane Crimea
Authors: Yudina V N , Boldyreva L L , Britvin V V , Reshetnik G V 
Published: April 2021

Abstract
This work displays the results of the research aimed at the creation of high-sugar forms of sweet sorghum. During 2019 and 2020 samples of sweet sorghum from the collections of N. I. Vavilov All-Russian Institute of Genetic Resources of Plants and the Agrotechnological Academy FSAEI HE “V. I. Vernadsky Crimean Federal University” were studied, new hybrids were derived. Of the particular interest are the high-sugar forms. The juice of sorghum stems contains sugars that can easily compete in quality with those of sugar beet. The plant can be used to produce alcohol and biofuel.
Trees and shrubs of native flora in green areas of the South-East coast of the Crimea
Authors: Potapenko I L , Klimenko N I , Letukhova V Yu , Klimenko O E 
Published: April 2021

Abstract
The article examines species of native dendroflora in parks and other green areas of the South-Eastern coast of the Crimea. Those of them that are often used are considered, as well as rare one. The oldest woody aborigines in the parks of the region are identified, and their morphometric data are given. The work also considers neophytes of the Crimean flora (cedars, cypresses, pines), that emphasize the Mediterranean character of the local landscapes. Special attention we have paid to species with regional and state conservation status. Cultivating them in gardens and parks will serve as an additional measure to preserve them. We proposed species of native trees and shrubs with good ornamental properties and suitable for the soil and climatic conditions of the region. Thus, we expand their species diversity in cultural cenosis. Their physiognomic correspondence to local picturesque landscapes is important. Artificial green spaces play an important role in the conservation of biodiversity, as well as rare protected species of the Crimean flora. The preservation of artificial green zones should correspond with the general concept of nature protection in the region.
Application of photometry for crops online diagnostics of the nitrogen nutrition of plants
Authors: Shchuklina O A , Langaeva N N , Voronchikhina I N , Voronchikhin V V , Afanasiev R A 
Published: April 2021

Abstract
The application efficiency of portable photometric nitrate tester “Spectrolyuks” produced domestically and «Yara» produced foreign for online diagnostics of nitrogen nutrition of agricultural crops in the link of field crop rotation reviewed. The results of a field test conducted in 2012-2015 in the Central Region of Non-Chernozem zone on spring grain crops (barley, triticale) and white mustard, shown the positive effect of a photometric devices application. The data photometric diagnostics obtained in the initial phase of crops development (stem elongation on the barley and triticale, budding on the white mustard) had a strong correlation dependency with crop yield of the link of the field crop rotation and stem diagnostics scores.
The effectiveness of various antibacterial drugs in the treatment of swine respiratory diseases
Authors: Kugelev I M , Kapay N A , Davydenkova O V , Russkin A S 
Published: April 2021

AbstractThe polyethiological nature of pig respiratory diseases involves the use of antibacterial drugs of the widest possible spectrum of action. The success of the whole range of therapeutic measures will largely depend on the choice of antibacterial drugs. This article presents the results of a clinical (field) study evaluating the effectiveness of azithromycin, florfenicol and amoxicillin in respiratory diseases of pigs under conditions of contamination with associates of highly resistant pathogens (Mycoplasma spp., Hemolytic coagulase-positive Staph.aureus, non-hemolytic Lac-coli fermenting E. hemolytic Enterococcus faecalis, Klebsiella pneumoniae, Klebsiella oxytoca, Morganella morganii, Pseudomonas aeruginosa, Proteus mirabillis, Enterobacter aerogenes, Enterobacter cloacae). The study included 90 crossbred piglets 100-110 days old with pronounced clinical signs of respiratory diseases. In the course of the work, the dynamics of changes in the state of piglets was assessed: the rate of disappearance of clinical signs, the average daily weight gain, the presence of associates of highly resistant microorganisms after a course of treatment, the mortality rate and the number of adverse events and side reactions. The results of the study revealed the formation of multidrug resistance in a number of pathogens. Preparations based on florfenicol and azithromycin showed higher therapeutic efficacy in the treatment of respiratory diseases of piglets under conditions of contamination of associates of highly resistant pathogens.
Purification and concentration of potato juice by ultrafiltration and nanofiltration
Authors: Farnosova E N , Rid A A , Morozova Ya A 
Published: April 2021

Abstract
In this article are proposed and investigated the baromembrane methods for purification of potato juice with recycling. The resulting concentrate could be used as a feed and food additive. The optimal technological parameters of the ultrafiltration stage – the type of membranes, the molecular weight cutoff, the process temperature, and the operating pressure are analyzed and determined.
Features of the functioning of stress systems of the animal body against the background of the use of a feed additive
Authors: Kaluga I A , Pauli A S , Volokhovich A A , Arapova A V , Fatkullin R R 
Published: April 2021

Abstract
This article contains information about the impact of cross-activating and stress-limiting environmental factors on the body of young calves, in particular, information about the physiological status and antioxidant system. The following indicators, catalase activity, malonic dialdehyde, as well as lipid peroxidation. At the same time, we assessed the adaptive capabilities of animals, against the background of the use of corrective fodder supplements, which contribute to the strengthening of stress activity - limiting systems of the body [1]. At the end of the research work, we will analyze the ability of the biovitel feed additive to affect the antioxidant system of the body of the subjects animals.
A new method for the selenium nanoparticles synthesis and study of their influence on the characteristics of physiological processes in spring rye seedlings at the initial stages of ontogenesis
Authors: Gorshunova S V , Drevko Ya B , Bannikova A V , Larionov S V , Drevko B I 
Published: April 2021

Abstract
A new method for the synthesis of selenium nanoparticles based on its organic compound is described, which makes it possible to obtain nanoparticles with a size of 1.8-3.5 nm. It was established that the growth processes and development of spring rye plants were stimulated by adding the selenium nanoparticles to the growing medium up to 91% and 25% as compared to the control and other selenium-containing preparations, accordingly.
Effect of a nanomodified antibiotic on field strains of E. coli and Enterobacter cloacae
Authors: Lovtsova L , Guliy O , Larionova O , Zabelina M , Uskov K , Lovtsov I 
Published: April 2021

Abstract
For the first time, a comparative analysis of the biological activity of selenium nanoparticles was carried out to create a new drug based on a non-toxic and effective means of intracellular delivery of selenium nanoparticles and the antibiotic polymyxin. Proven A method for the synthesis of selenium nanoparticles was developed using polyvinylpyrrolidone as an adsorbent, a stable form of their storage was achieved, microscopy of electron losses was carried out, the size of the synthesized preparation containing selenium nanoparticles was determined.