Using data of optic sensors and pigment content in leaves for efficient diagnostics of nitrogen nutrition

Received: February 23rd, 2022 ; Accepted: May 16th, 2022 ; Published: August 12th, 2022 ; Correspondence: [email protected] monitoring and diagnostics of a condition of crops permit to make prompt and proper activities on dressing nitrogen fertilizers. This will allow the plants to use the nitrogen applied efficiently, and therefore reduce their use in field. Since nitrogen that has not been utilized by plants is able to escape into the atmosphere or be washed out of the soil with water. The most accurate diagnostic method is to determine the chemical composition of plants, but it takes quite a long time and requires laboratory conditions, which is not always possible in the field. One of the promising methods is photometric diagnostics of crops using optical instruments. Experiment is carried out in contrasting weather conditions, on soddy-podzolic soil with spring barley and spring rapeseed being investigated. Results of research show the efficiency of using optic sensors (N-testers) for efficient diagnostics of nitrogen nutrition of plants. The readings of the device (N-tester) were compared with the concentration of a and b chlorophyll, determined by a chemical method. Results of diagnostics with portable photometric device ‘Yara’ are correlating with concentrations of chlorophylls a (r=0.96) and b (r = 0.91) in spring rapeseed. Moreover, correlation of rapeseed yield and concentrations of chlorophylls a and b has quantity and inverse relation similar to device indication (r = -0.81 and r = -0.70 respectively). Results of diagnostics with N-tester ‘Spectroluxe’ are strongly correlating with chlorophyll concentration. Device indication correlates stronger with chlorophyll b concentration in spring barley and chlorophyll a concentration in spring rapeseed (rapeseed was investigated in dryer conditions). Thus, such a modern optical device as N-tester, whose action is based on measuring the concentration of leafy chlorophyll, can replace chemical methods and increase the efficiency of nitrogen fertilization, which means increasing the productivity of plants and reducing the negative impact of unreasonable use of nitrogen fertilizers

Collective Memory of the 20th Century Russia and Values of Different Generational Groups

Introduction. It is important to consider collective memory from the social constructionism prospective. The present study of collective memory is aimed at identifying the event series that constructs historic memories and determines what is more important to different generational groups of modern society. This paper is the first study on prevailing values in each generational group that characterizes the content of collective memories of the 20th century Russia. Methods. The study employed quantitative and qualitative methods including (a) associative methods, (b) the Schwartz Value Survey, and (c) the questionnaire for comparing Russia of the 20th century and the ‘ideal’ Russia. The study sample consisted of 90 respondents of various ages from different regions of Russia. Results. This section describes the content of group memories about Russia of the 20th century, the specific prevailing group values, and the results of comparing Russia of the 20th century with the ‘ideal’ Russia in three age groups. After analyzing the content of participants’ memories, the authors conclude that various events constitute the content of group memories, reflecting the group specific generational character. In participants’ representations Russia appeared to be both a far from an ideal country and a highly appreciated one. The study revealed that each generational group had its own structure of values. Discussion. The analysis showed that the content of memories about Russia of the 20th century reflected the specific character of relation to the past in the studied groups. The results confirmed the hypothesis about specific group characteristics guiding construction of collective memories of a historical period. This allowed the authors to define collective memory as an essential feature of a social group. The study describes the phenomenon of ‘generational sensitivity’ that manifests itself as hypersensitivity (impressionability) toward past and current events in representatives of different social generational groups

Laboratory course using 1986VE92U ARM-microcontrollers

Presented development board based on microprocessor stand, built on a modern microcontroller 1986VE92U with ARM core family of Cortex-M3. A distinctive feature is a built-board peripherals, the presence of control and display and other functions. The high efficiency computational core allows you to use this microprocessor stand for laboratory practical courses on "Microprocessor technology" and "Microprocessor systems"Представлена отладочная плата на базе микропроцессорного стенда, построенного на современном микроконтроллере 1986ВЕ92У с ядром ARM семейства Cortex M3. Отличительной особенностью платы является наличие встроенного периферийного оборудования, наличие органов управления и индикации и других функций. Вычислительное ядро достаточно высокой производительной способности позволяет использовать данный микропроцессорный стенд для проведения лабораторного практикума по курсам «Микропроцессорная техника» и «Микропроцессорные системы

Design of concordant forms of modern clothes on the basis of proportional correlations of sacred geometry

Design of concordant collection of women’s clothes by means of interpretation of proportional correlations of sacred geometry using combination options for structural forms and lines when creating texture, colour and prints. In order to analyse the information sources, the literary and analytical, visual and analytical methods have been applied; to investigate the requirements of the customer segment, the sociological survey has been applied; in order to transform typical proportional correlations to rhythms of the designer clothes, the systems and structural, morphological analyses have been applied

A prebreeding study of introgression spring bread wheat lines carrying combinations of stem rust resistance genes, Sr22+Sr25 and Sr35+Sr25

The Sr22, Sr35, and Sr25 genes attract the attention of bread wheat breeders with their effectiveness against Puccinia graminis f. sp. tritici race Ug99 and its biotypes. The effectiveness and impact of Sr22+Sr25 and Sr35+Sr25 gene combinations on agronomic traits have not yet been studied. In the present article, these traits were studied using the spring bread wheat lines L503/W3534//L503, L503/Sr35//L503/3/L503 carrying the Sr22+Sr25 and Sr35+Sr25 genes during 2016–2020. These lines were assessed for resistance to P. graminis f. sp. tritici under natural epiphytotics and to the Saratov, Lysogorsk and Omsk populations of the pathogen and to the PgtZ1 (TKSTF) and PgtF18.6 fungus isolates in laboratory conditions (TKSTF + Sr33). The presence of the studied Sr-genes was confirmed by using molecular markers. Prebreeding studies were conducted during 2018–2020 vegetation periods. Under the natural epiphytotics of the pathogen and in the laboratory conditions, the Sr22+Sr25 combination was highly effective, while Sr35+Sr25 was ineffective. For grain yield, the lines with the Sr22+Sr25 and Sr35+Sr25 genes were superior to the recipient cultivar L503 in one year (Sr22+Sr25 in 2019; Sr35+Sr25 in 2018), with a decrease in 2020, but in general there were no differences. For the period 2018–2020, both combinations showed a decrease in 1000 grains weight and an increase in the germination-earing period. The line with Sr22+Sr25 genes showed insignificant effects on gluten and dough tenacity, but the ratio of dough tenacity to extensibility was higher, and flour strength, porosity and bread volume were lower; in the line with Sr35+Sr25 genes, the gluten content was lower, but the strength, tenacity of the dough and the ratio of dough tenacity to extensibility were higher, flour strength and the porosity of the bread were at the recipient level, but the volume of bread was lower

Molecular identification of the stem rust resistance genes in the introgression lines of spring bread wheat

A total of 57 introgression lines and 11 cultivars of spring bread wheat developed by All-Russian Institute of Plant Protection and cultivated in the Volga Region were analyzed. The lines were obtained with the participation of CIMMYT synthetics, durum wheat cultivars, direct crossing with Agropyron elongatum (CI-7-57) and have introgressions from related species of bread wheat, namely translocations from Ag. elongatum (7DS-7DL-7Ae#1L), Aegilops speltoides (2D-2S), Ae. ventricosum (2AL-2AS-2MV#1), Secale cereale (1BL-1R#1S), 6Agi (6D) substitution from Ag. intermedium and triticale Satu. Cultivars and lines were assessed for resistance to Saratov, Lysogorsk, Derbent and Omsk stem rust pathogen populations (Puccinia graminis f. sp. tritici), and analyzed for the presence of the known Sr resistance genes using molecular markers. The analysis of the cultivars’ and lines’ resistance to the Saratov pathogen population in the field, as well as to Omsk, Derbent and Lysogorsk populations at the seedling stage, showed the loss of efficiency of the Sr25 and Sr6Agi genes. The Sr31 gene remained effective. Thirty one wheat lines out of 57 (54.4 % of samples) were resistant to all pathogen populations taken into analysis. The Sr31/Lr26, Sr25/Lr19, Sr28, Sr57/Lr34 and Sr38/Lr37 genes were identified in the introgression lines. The Sr31/Lr26 gene was identified in 19 lines (33.3 % of samples). All lines carrying the 1RS.1BL translocation (Sr31/Lr26) were resistant to all pathogen populations taken into analysis. The Sr25/Lr19 gene was identified in 49 lines (86 %). The gene combination Sr31/Lr26+ Sr25/Lr19 was identified in 15 lines (26.3 %). The gene combinations Sr38/Lr37+Sr25/Lr19, Sr57/Lr34+Sr25/Lr19 and Sr31/Lr26+Sr25/Lr19+Sr28 were identified in 3 introgression lines. These three lines were characterized by resistance to the pathogen populations studied in this work. The Sr2, Sr24, Sr26, Sr32, Sr36 and Sr39 genes were not detected in the analyzed wheat lines

Analysis of resistance to stem rust and identification of <i>Sr</i> genes in introgressive lines of spring bread wheat

Background. Due to the increase in the harmfulness of wheat stem rust (Puccinia graminis f. sp. tritici Erikss. &amp; E. Henn.) in the Volga region, and the likelihood of the spread of the aggressive Ug99 race, an assessment of the genetic diversity of wheat breeding lines and identification of effective Sr genes are of fundamental importance.Materials and methods. Ninety spring bread wheat introgressive lines with stem rust resistance, developed at the Federal Center of Agriculture Research of the South-East Region, were analyzed. Molecular markers were used to identify resistance genes: Sr24/Lr24, Sr25/Lr19, Sr26, Sr28, Sr31/Lr26, Sr32, Sr36, Sr38/Lr37, Sr39 and Sr57/Lr34. The analysis of plants for resistance was carried out according to standard methods; the Stakman scale was applied to determine the type of reaction.Results. The genes Sr31/Lr26, Sr25/Lr19, Sr57/Lr34, Sr38/Lr37 and Sr39/Lr35 were identified in the analyzed breeding lines. Sr25 was found in 51 lines (56,7% of samples), Sr31 in 41 lines (45.6%), Sr57/Lr34 in 5 lines, Sr38 in 10 lines and Sr39 in one line. Combinations of resistance genes were identified: Sr31+Sr25 in 28 lines (31.1%), Sr25+Sr38 in 5 lines, and Sr25+Sr39 in one line. The Sr24/Lr24, Sr26, Sr28, Sr32 and Sr36 genes were not identified.Conclusion. As a result, promising highly resistant introgressive wheat lines with promising combinations of Sr31+Sr25, Sr25+Sr38 and Sr25+Sr39 genes were identified. They can be used in Russian breeding programs for immunity

Interdisciplinary course project on electronics and microprocessor equipment

Tasks of the interdisciplinary courses projects on the disciplines concerning with electrical equipment, electronics, microprocessor equipments and primary sensors are discussed. The real tasks, which are used now when carrying out at academic courses projects are givenВ статье обсуждается формирование заданий междисциплинарного курсового проекта по дисциплинам, связанным с электротехникой, электроникой, микропроцессорной техникой и первичными датчиками. Приведены реальные задания, использующиеся в настоящее время при проведении курсового проектировани

LABORATORY WORKSHOP ON BIOTECHINICAL SPECIALTIES OF PHYSICO-TECHNOLOGICAL INSTITUTE OF URFU. MAGNETO-THERAPEUTIC INSTALLATION

The article discusses the laboratory practical work on subjects related to biotechnical systems and technologies. Example of the laboratory work, currently in use on the biotechnical specialties of physico-technological institute.Рассмотрены новые лабораторные работы, включенные в лабораторный практикум по дисциплинам, связанным с биотехническими системами и технологиями, которые используются в настоящее время на биотехнических специальностях физико- технологического института