name
Repko Nataliya Valentinovna
Scholastic degree
•
Academic rank
associated professor
Honorary rank
—
Organization, job position
• Kuban State Agrarian University
доцент
Research interests
Web site url
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Current rating (overall rating of articles)
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TOP5 co-authors
Articles count: 23
Сформировать список работ, опубликованных в Научном журнале КубГАУ
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06.00.00 Agricultural sciences
Description
Duration of vegetation period is one of the main adaptive traits for any crop or variety. Reasonability of cultivation of a variety in a particular soil and climate zone is determined by the duration of the vegetative period. One of the aims of breeding is the creation of the varieties with the main vegetative phases lasting at more favorable climatic conditions. The most accurate way to determine maturity group of a variety is by estimation of starting of heading phase, which can be defined with the greatest precision. The article covers the analysis of the duration of the vegetative period of the lines and varieties of winter barley of local and foreign selection in the central zone of Krasnodar region. All the varieties were divided into three maturity groups. The vegetative periods of the varieties were studied during four years. The most favorable and adverse conditions for yield formation were determined. The interactions between the productivity of the varieties depending on maturity group were identified. The varieties of the early maturity group which are more productive than the check were selected, which is most valuable for the breeding of the crop. The best varieties with the high and stable yield and the positive traits are regularly involved in the breeding programs with the porpoise of making new varieties of the winter barley
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BIOLOGICAL MARKERS FOR SELECTION ON THE FROST RESISTANCE OF WINTER WHEAT AND BARLEY FORM
Description
We have described the theoretical assumptions and methodological solutions in the present review. They are innovative possibilities in the development of laboratory methods for assessing biological features of grain during the selection process
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INTERACTIONS OF GOLD, SILVER AND MAGNESIUM NANOPARTICLES WITH PLANTS
Description
The review examines the recent years’ data pertaining to the interaction of plants with nanoparticles of noble metals (gold and silver) and with nanoparticles of magnesium as an element that has a central role in the organization of the cellular protein-synthesizing apparatus. Information is presented about the effect of gold and silver nanoparticles on plants and on possible nanoparticle phytotoxicity. It is shown that magnesium nanoparticles, as well as those of noble metals, produce various effects on the growth and productivity of plants, enabling the arsenal of biologically active substances to be expanded. Analysis is made of the involvement of magnesium nanoparticles in cryobiological reaction of the regular breakdown of plant RNA under conditions of ultra low temperatures, which is important not only for the further developments of views of the origin of life ob Earth but also for the purposes of designing new markers for the analysis of the biological peculiarities of agricultural crops on the basis of studies of magnesium in the long-lived RNA of their mature seeds. The presented critical analysis of the literature data, which are often incomplete and contradictory, suggest that a coordinated research program is needed that would detect correlation between particle parameters, experimental design, and observed biological effects
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Description
The quality of the seed largely depends on the value of the future crop. For sowing, it is necessary to use seeds with high sowing qualities. This article is devoted to the study of the formation of high-quality seed of new varieties of winter barley, depending on the controlled compaction of crops. The paper describes in detail the importance of sowing qualities of seeds for the formation of high productivity of barley crops. The questions of influence of different seeding rates on laboratory and field germination of seeds are considered. The correlation between the four variants of seeding rates and field and laboratory germination was determined. The purity of seeds of winter barley varieties Kubagro – 1 and Kubagro – 3 was studied and it was determined that the change in the density of the formed stem does not affect the purity of seeds of these varieties. The use of highly productive seeds for sowing and further qualitative cleaning of the obtained grain contributes to the production of seed material with high purity. When considering the weight of 1000 grains in the studied varieties, it was determined that with an increase in the number of productive stems per unit area and a decrease in the area of plant nutrition, both varieties reduced the mass of grains. The highest rates of weight of 1000 grains were determined when sowing with the norm of 3.5 million germinating seeds per 1 ha, such a pattern was observed for both varieties
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06.00.00 Agricultural sciences
Description
The article brings the results of three-year studies of the influence of the periods of sowing on productivity of new varieties and lines of winter barley
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PLANT HEIGHT AND LODGING RESISTANCE OF COLLECTION VARIETIES OF WINTER BARLEY
06.00.00 Agricultural sciences
Description
Lodging resistant is a very important factor of limitation of the yield of barley. The yield of lodged crops may be decreased up to 50%. The quality of the yield also deteriorates which negatively affects brewery characteristics. The lodging resistance of a variety is determined genetically and depends on a plant height and weather conditions during dynamic vegetation. One of the main aims of breeding of the crop for lodging resistance is the selection of short-stem varieties. However, a thorough study of the basic material and determination of its adaptability to a particular soil and climatic zone and suitability of its usage as parental forms are needed. The article covers the plant height of collection varieties of winter barley in the central zone of Krasnodar region and determines the groups of the varieties based on this trait. The dynamic of plant height formation depending on the vegetative conditions during five years is studied. The examination of lodging resistance of winter barley revealed that there are many non-lodging forms of the crop. New local varieties and lines have short and strong culms. Also, some varieties from Western Europe and the USA show its good lodging resistance under these conditions
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IMPORTANCE AND USE OF ANNUAL GRASSES
06.00.00 Agricultural sciences
Description
The article presents the results of statistical studies on sowing area of one-year stern in agricultural production of the country and of separate regions. We have also studied the structure of the areas in the Russian Federation and presented the analysis of the areas of the one-year forage crops in the south Federal County
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ESTIMATION OF INITIAL MATERIAL FOR BREEDING OF WINTER BARLEY IN KUBSAU
06.00.00 Agricultural sciences
Description
Results of three-years of examining the collection material of winter barley of different ecological-geographic origin are brought in this article. We have also allocated sources of high grain productivity, winter hardiness and precocity for further use in breeding programs
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ASSESSMENT OF FROST RESISTANCE IN WINTER BARLEY VARIETIES
06.01.01 General agriculture, crop production (agricultural sciences)
Description
The article presents the results of the research on the evaluation of frost-resistant varieties of winter barley. Frost resistance is the main criterion for winter hardiness of winter crops. To promote the area of cultivation of winter barley in colder areas, production needs high-hardy varieties. Recently, due to the warming of the climate in the Central zone of the Krasnodar region, it is almost impossible to reliably and accurately determine the winter hardiness of winter crops in natural (field) conditions. In this regard, breeders in their work, in order to identify frost-resistant forms, use the method of direct freezing of breeding and collection material. During our research, the evaluation of the test material was carried out using a modified method developed by academician V. M. Shevtsov. This method allows the most accurate and efficient determination of the critical temperature for a particular sample in a short period of time. Varieties and lines were placed in the EKSI refrigeration unit for a certain period of time. Then they were taken out, and at the end of time, the percentage of plants before and after freezing was calculated. As a result of the conducted research, we have selected highly frost-resistant forms that differ in a complex of economically valuable features and properties
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ACREAGE AND YIELD OF WINTER BARLEY IN THE MAJOR REGIONS OF GROWING
06.00.00 Agricultural sciences
Description
The article presents a comparative analysis of national economic importance of winter barley in relation to other crops. The advantages of winter barley in a number of factors have been observed. The information about acreage under crop and gross yield of this crop is presented in an article in the form of tables. The authors have studied such important factors as a dynamics of acreage of crop yield in the main regions of cultivation. Against the overall negative dynamics of sown areas, they noted a clear increase in 2013. An analysis of grain yield of winter barley in the main regions of cultivation by year has been presented graphically. Special attention was paid to the Southern Federal District and the Krasnodar Territory in particular as a major producer of grain of winter barley. The analysis of yields in the major regions of cultivation of winter barley showed a clear advantage of the Krasnodar region. The index of the average grain yield of winter barley cultivation in this region for the period from 2003 to 2008 has been shown. Moreover, the article has presented the role of sorts in increasing the yield grade. We have also highlighted the issue of selection of winter barley in our country. The desirability of increasing the production of winter barley in the Russian Federation has been noted as well
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