Soft Wheat Varieties Research Articles

Genetic correlations of quantitative traits and selection indices of soft winter wheat varieties and selection lines depending on the phase of forced winter dormancy or its absence

Genetic correlations of quantitative traits and selection indices of soft winter wheat varieties and selection lines depending on the phase of forced winter dormancy or its absence

TECHNOLOGICAL AND BAKERY PROPERTIES OF GRAIN FORMS OF WHEAT CREATED BY HYBRIDIZATION OF TRITICUM AESTIVUM L. × TRITICUM SPELTA L.

TECHNOLOGICAL AND BAKERY PROPERTIES OF GRAIN FORMS OF WHEAT CREATED BY HYBRIDIZATION OF TRITICUM AESTIVUM L. × TRITICUM SPELTA L.

Study of the effect of water stress and nitrogen dose on six Moroccan varieties of soft wheat

Study of the effect of water stress and nitrogen dose on six Moroccan varieties of soft wheat

КАЧЕСТВО ЗЕРНА НОВЫХ СОРТОВ ЯРОВОЙ МЯГКОЙ ПШЕНИЦЫ В СЕВЕРНОЙ ЛЕСОСТЕПИ ТЮМЕНСКОЙ ОБЛАСТИ

Many researchers consider that varieties capable of producing high-quality grain under specific growing conditions are crucial for increasing the production of high-quality wheat grain. The study aimed to evaluate the grain quality of the new spring soft wheat varieties under the official variety trial in the conditions of the northern forest-steppe of Tyumen region. For the study, grain samples of spring soft wheat varieties grown in the Ishim state crop testing plot (northern forest-steppe of Tyumen region) were selected. The soil of the experimental plot is leached chernozem, the predecessor is complete fallow. Evaluation involved fifty three varieties in 2021 and forty varieties in 2022. Grain samples were evaluated for protein and gluten content. Infralum FT-12 instrument was used to determine the indices. The weather conditions of 2021 were favourable for reaching the grain quality potential in wheat varieties. Most of the varieties demonstrated grain with large protein and gluten values. Varieties Agronomicheskaya 5, Ekaterina, Kostanay, Novosibirskaya 15 and Novosibirskaya 31 (middle-early), Danko (mid-ripening) are the most promising for further use; the protein content in the grain reached 16,1 %–17,4 %, the gluten content ranged 34,5 %–38,1 %. The weather conditions of 2022 (low air temperature and increased precipitation) failed to demonstrate high grain quality indices in wheat varieties. Still, the study singled out varieties with the increased levels of protein and gluten: Tyumenskaya 25 – 14,1 % and 25,8 %, L 140 – 13,5 % and 23,6 %, Novosibirskaya 75 – 13,5 % and 24,1 % (middle-early varieties); Atlanta 2 – 13,7 % and 24,2 %, Varden – 14,4 % and 26,7 % (mid-ripening varieties).

The influence of planting times on the formation of the root system of wheat varieties in the conditions of the Zarafshan valley

In the article, the study of the underground organs of plants is of particular importance for solving important issues related to plant biology, ensuring the proper development of crops in agriculture, the interaction of plants with the habitat in the process of growth and development, and therefore the morphological structure (shape, formation) of the root plants in different soil conditions, etc.) are characterized by extreme diversity. The formation of the above-ground mass of plants depends on the growth of the root. Therefore, in our experiment, in addition to studying the development of the wheat root system, it is aimed at studying the patterns of its growth and development, its relationship with the aboveground parts of the earth, and, finally, the influence of planting dates. on the root system of various ecological conditions of the area. In our studies, the level of development of the root system of wheat varieties depends on its penetration into the soil, the root mass, the type of soil and its mechanical composition, the topography of the sowing field, the degree of erosion, and the depth of the soil. groundwater, plant species, variety, planting dates, norms, watering, diets. It has been established that the development and activity of the root system has a significant impact on the formation of wheat varieties. The article considers the influence of sowing time on the formation of the root system of durum wheat Krupinka and soft wheat variety Krasnodarskaya 99, included in the State Register of Agricultural Crops, and recommendations are given based on the results of the experiment.

Common wheat (triticum aestivum) selection for tolerance to soil salinity

In the experiment, laboratory studies were conducted to evaluate the salt resistance of wheat samples. Different saline environments were created in laboratory conditions (0.5, 1.0 and 1.5% concentration of NaCe salt) and the seed germination of soft wheat varieties and samples, the length of seedlings and the number of roots were determined. It was noted that Khumo, Taraqqiyot, Emir, Pervitsa, Rhapsody, Zimnitsa, Drujba varieties are resistant to strong salinity, and samples with a fast and strong root system are more resistant to salinity. Uzbekistan rice farming scientific research institute Karakalpakstan branch Shurtanbai experience economy in the fields was conducted and in this 183 variety 13 samples were selected after studying their salt tolerance. Saline soil conditions Vegetation of samples period 10-12 to the day short being accumulation drastic in number noticed. Salted soil conditions grain shine gluten quantity and quality sharp decreased gone was determined..

Биологическая эффективность фунгицидов нового поколения против листостебельных болезней озимой пшеницы

The article presents the data on the research of biological effectiveness of two-component fungicides Altrum Super, SE and Alkor Super, SE in crops of winter wheat variety Alekseich in the phase of the end of earing - beginning of flowering in the climatic conditions of the Central part of the Non-Chernozem region. The field experiment was carried out in 2021-2022 at the All-Russian Research Institute of Agrochemistry named after D.N. Pryanishnishnitsky. D.N. Pryanishnikov, Agricultural Engineering Department, sod-podzolic-loam soil, 1st agroclimatic zone, Domodedovo Microdistrict, Moscow Region. Barybino. Combined systemic fungicides Altrum Super, KE and Alkor Super, KE with the same active substance, but different manufacturers and winter soft wheat variety Alekseich were the objects of research. The investigations were carried out by generally accepted methods. As a result of studies, it was found that the first manifestations of diseases in wheat crops were observed in the second decade of June. Depending on the date of registration, application of new generation fungicides in winter crops provided biological effectiveness against pyrenophrosis 62,1-84,5%, powdery mildew 63,1-83,3%, stem rust 63,0-83,0%, brown rust 65,3-84,0%, septoriosis 62,4-85,9% and yellow rust 62,7-81,4%. The maximum yield in the experiment was achieved with a single treatment of the crop fungicides Altrum Super, KE and Alkor Super, KE at a rate of 0.5 l/ha. In relation to the control, Altrum Super, SE (250 + 80 g / l) -0.4 l / ha, Altrum Super, SE (250 + 80 g / l) - 0.5 l / ha and Alkor Super, SE (250 + 80 g / l)- 0.5 l / ha allowed to increase the yield by 11.80%, 15.80% and 14.10%, respectively.

Mid-season spring wheat variety Kuraginskaya 2

The biological features and economically useful traits of the spring soft wheat variety Kuraginskaya 2 were studied. The studies were carried out in 2010-2021 on experimental fields and in laboratories of the Krasnoyarsk Research Institute of Agriculture. Sowing was carried out on a fallow predecessor with a rate of 500 germinating grains per 1 m2. The soil of the experimental site is leached chernozem. Variety Kuraginskaya 2 was created by the method of intraspecific hybridization and subsequent selection from the population K-817xKazakhstanskaya 10 of Lutescens variety. The variety is mid-season, the duration of the growing season is at the level of standards. In competitive variety testing the average grain yield was 27.7 centner/ha. The advantage over the Omskaya 33 standard is 3.8 centner/ha. Kuraginskaya 2 surpasses Omskaya 33 in terms of 1000-grain weight and ear grain content. The maximum yield of 71.0 centner/ha was obtained in 2019 at the Uyar variety plot. The variety has high ecological plasticity, resistant to lodging and root rot. Grain quality corresponds to a good filler.

ОЦЕНКА НОВЫХ СОРТОВ ЯРОВОЙ МЯГКОЙ ПШЕНИЦЫ ПО КОЭФФИЦИЕНТУ КАЧЕСТВА ЗЕРНА

Production of high-quality food wheat is primarily associated with growing varieties that stably produce grain at the level of the current standards. The research aimed to assess the compliance of the grain quality of new spring soft wheat varieties with GOST (national) standards using the quality coefficient. Wheat varieties were grown in the sub-taiga zone of Tyumen region in the Nizhnetavdinsk state variety test plot in 2020 and 2021. The requirements for strong wheat GOST 34702-2020 Baking wheat. Specifications were taken as standard indicators. To assess varieties by the quality coefficient the researchers used the formula: K = Pf / Pn, where K is the quality coefficient, Pf is the actual indicator; Pn is an indicator of the standard value. The study revealed that most of the varieties produced grain with protein values within the limits of the GOST 34702-2020 standards for strong wheat (the quality factor is equal to or greater than one); the alveograph index measuring “dough deformation energy” met the requirements for strong wheat in most of the studied varieties; the farinograph index for “dough dilution” did not meet the standards for strong wheat (the quality factor is less than one) in most of the varieties. The obtained results call for a further study of the effect the specific factors in local conditions have on the indicators measured by the farinograph. Evaluation based on the quality coefficient is recommended for identifying the most stable varieties in terms of individual and complex technological indices related to the requirements for baking wheat in the conditions of the Northern Trans-Urals.

Comparative evaluation of the productivity of winter crops (wheat [Triticum aestivum L.], rye [Secale cereale L.], triticale [Triticosecale Witt.]) in the western forest-steppe of Ukraine

The aim of the study was to determine the parameters of adaptability of winter crop varieties for cultivation in the western forest-steppe zone of Ukraine (2019-2021). The subject of the study were wheat (Triticum aestivum L.) varieties: Vodogray bilotserkivsky, Oberig Myronivsky, Mudrist odeska; rye (Secale ?ereale L.): Knyazhe, Kobza, Kharkivyanka; triticale (Triticosecale Witt.): Markian, Molfar, Obrij myronivsky. The tests were carried out in the field. The area of the experimental plot was 55 m2, and the placement of varieties was consecutive with three repetitions. The results showed that under the basic cultivation technologies and weather conditions of the growing seasons, the grain productivity of soft wheat varieties varied from 4.88 (Mudrist odeska) to 5.39 t ha-1 (Oberig Myronivsky); rye - from 5.55 (Kharkivyanka) to 6.32 t ha-1 (Kobza); triticale - from 6.45 (Markian) to 6.74 t ha-1 (Obrij myronivsky). The results obtained allow to conclude that ecologically plastic varieties of winter crops in the conditions of the studied soil-climatic zone accumulate a sufficient amount of sugar in the tillering nodes - 25-30%, ensure overwintering of plants - 94-96%, are resistant to the main diseases, which contributes to the production of high-quality seeds to ensure the cultivated area in the region and the efficiency of seed production.

The influence of genotype and year conditions on the transgressive variability of stem length in popu-lations of the second generation of soft winter wheat

In 2019–2020, in the conditions of the experimental field of the Bila Tserkva National Agrarian University, populations of F2 hybrids, created by crossing soft winter wheat varieties that differ in the duration of the growing season, were studied. The aim of the work was to establish the degree and frequency of transgressions in the length of the main stem depending on the meteorological conditions of the year and the parental forms selected for hybridization, and to select selectively valuable recombinants for further research. In 2019, in 40 out of 42 F2 populations, only a positive degree of transgression was established in terms of the length of the main stem, from 2.5 % (Myronivsk early/Kolchuga) to 53.8 % (Zolotokolosa/Shchedra nyva). With the use of maternal cytoplasm of early ripening varieties in four populations, all plants exceeded the extreme maximum values of the parents, and with the hybridization of mid-early, mid-ripening, mid-late varieties, 13 such combinations were studied. In the conditions of 2020, positive transgressive recombinants were isolated only in six out of 20 populations based on hybridization with the maternal form of early-ripening varieties, and negative ones – in nine. Negative transgressive recombinants were selected in 13 of 21 populations created by crossing mid-early, mid-maturing, mid-late varieties. At the same time, no positive transgressions were found. The selection of parental pairs differing in precociousness before hybridization expands morphogenesis in F2 populations of soft winter wheat and promotes the selection of both positive and negative transgressive recombinants by the length of the main stem. A significant influence of meteorological conditions and initial forms of hybridization on the formation of stem length and the manifestation of extreme maximum and minimum values in populations of the second generation of soft winter wheat was established. The use of early-ripening cytoplasm in hybridization has a greater effect on the positive transgressive variability of the length of the main stem in F2 populations compared to medium-early, medium-maturing and medium-late maternal forms. Key words: degree and frequency of transgressions, soft winter wheat, maturity groups, parent forms, main stem length, F2 populations.

Productivity of Winter Wheat Cultivated by Direct Seeding: Measuring the Effect of Hydrothermal Coefficient in the Arid Zone of Central Fore-Caucasus

In arid zones, the yields of soft winter wheat varieties are particularly affected by the variations of hydrothermal conditions. This especially applies to direct seeding practices, for which the understanding of the links between hydrothermal parameters of soil and the environment, on one side, and the productivity of winter wheat, on the other, is one of the founding pillars of stable agricultural systems. On the case of the arid zone of Central Fore-Caucasus, this study investigates changes in the duration of interphase periods of plant development, plant density, and yield. It is found that in 2019–2021, positive temperature shifts and drought resulted in an increase in the duration of the growing season of crop varieties, thinned plant density, and reduced productivity of drought-resistant varieties. Evaluation of indices, that determine the ecological and genetic variability of varieties in the “genotype-environment” system resulted in the establishment of models that described the effect of drought on crop yields by type of manifestation and forecrops (sunflower, chickpeas). It is shown that the average linear deviations improved phase techniques and changed the area of winter wheat cultivation. On the back of the further drought propagation, farmers in arid zones could benefit from breeding new varieties and hybrids of grain crop. These measures may increase or stabilize the productivity of winter wheat in arid environments. Specifically, for the arid zone of Central Fore-Caucasus, the study recommends reducing lands under grain crop and shifting the cultivation of winter wheat northward. This will reduce the impact of volatile climatic conditions on winter wheat productivity in the region.

STUDENCHESKAYA NIVA - NEW WINTER SOFT WHEAT VARIETY

Winter soft wheat is the leading crop in agriculture of Ulyanovsk region. The problem of yield increase and winter wheat production in the region should be solved, among other things, by further selection improvement of this crop. The purpose of the research was to give a comprehensive economic and biological characteristics of StudencheskayaNivanew variety of winter soft wheat of Ulyanovsk State Agrarian University, which was studied on the experimental field of the Agrarian University in competitive variety testing (2018-2022), as well as on variety plots of the Middle Volga region of the Russian Federation ( 2020-2021). It was found that the new variety is characterized by high winter hardiness (4.4 points). StudencheskayaNiva variety formed large grain (weight of 1000 grains 38.3-55.0 g) in all years of research, including years with drought events of different intensity, which indicates its high drought resistance. According to the ripeness group, the new variety belongs to mid-early-early ripening wheat. The maximum yield for Studencheskaya Niva variety was achieved in 2021 - 7.73 t/ha. The yield potential of the new variety was realized to the greatest extent under conditions of sufficient moisture, however, relative tallness (113-116 cm) and lodging were noted. Plasticity evaluation on the trait of "grain yield" showed that the variety belongs to semi-intensive type of wheat. The advantage of the new variety is stability in formation of high quality grain.

Effect of tillage and macronutrients application on the quantitative and qualitative parameters of winter wheat (Triticum aestivum) under semi-arid conditions of Southern Russia

Tillage system and macronutrients are the many emerging farming issues that are addressed in contemporary cropping systems. In this regard, selection of a promising high-yielding variety of winter soft wheat was considered. The effects of basic tillage practices (Moldboard ploughing, Flat cutting ploughing and Disk ploughing) in combination with the different fertilization (Fertilizer-free, N90P50 and N180P100) were investigated on qualitative and quantitative parameters of winter wheat cultivar Grom under semi-arid environmental condition of southern Russia. The experimental design used in this experiment was a randomized complete block design (RCBD) with three replications. The highest winter wheat Grom yield with the value of 5.3 and 5.6 t/ha was attained for Moldboard ploughing and Flat cutting ploughing at a depth of 20-22 cm combined with application of nutrients N180P100, respectively. On the other hand, the lowest grain yield (2.78 t/ha) was achieved in fertilizer-free treatment in combination with Disk ploughing 12-14 cm depth. Moldboard ploughing plus nutrient application N180P100 had the best results on leaf area (48.2 thousand m2/ha), photosynthetic potential (million m2 × day/ha) and dry biomass (10.1 t/ha).

Milling performance and bread‐making aptitude of the new soft kernel durum wheat variety Faridur

SummaryFaridur is the first ‘soft kernel’ durum wheat variety released in Italy. This variety has not yet been evaluated for its end‐use quality. In the present study, the milling performance (using two different mills) and bread‐making ability of Faridur were compared with Svevo. An effect of the mill type on flour properties was observed, with the Chopin CD1 mill leading to finer particle size, higher starch damage and water absorption than Bühler MLU 202. Protein and gluten content was significantly higher in Faridur, but gluten quality was lower, as indicated by alveograph and farinograph analyses. The softer nature of Faridur facilitated milling, reducing energy consumption and starch damage. The baking test led to a compact product, with low specific volume, needing adjustments in processing and formulation. As energy saving has become a key competitive factor in the milling sector, Faridur has potential for expanding the use of durum wheat.

Assessment of the quality of winter soft wheat varieties in the Volga region

The results of research on ordinary chernozem in the grain-steam crop rotation to identify new promising varieties with high grain quality for modern technologies of cultivation of winter soft wheat in the arid conditions of the Samara Volga region are presented. Under contrasting weather conditions for 2019-2021, when testing 17 varieties, the maximum average grain yield was formed by the varieties Marathon, Basis, Blizzard, Kalach 60, Pearl of the Volga region, Scepter, Malachite, Alternative, Novoershovskaya – 4.38-4.60 t/ha. On average, during the three years of testing, the varieties Svetoch – 49 g, Malachite, Volga 86 by 41 g, Saratov 17 – 785 g/l, Bezenchuk 380 – 783 g/l, Basis – 780 g/l and Severodonetsk jubilee – 779 g/l were distinguished by the weight of 1000 grains. In terms of protein content in grain for the same period, the highest values were found in the varieties Volga 86 and Volga niva by 15.2%, Bezenchukskaya 380 and Blizzard by 15.0%, in terms of gluten content – Severodonetsk jubilee, Saratov 17, Turquoise – 32.1-33.8%. On average, in two years, the Blizzard variety stood out in terms of the indicator. The remaining varieties showed the second class of gluten quality. Correlation analysis established a direct relationship between the mass of 1000 seeds and nature with yield (r=0.54-1.00) and the reverse with protein and gluten content (r= - 0.55 to -1.00). Based on the conducted research, when cultivating winter soft wheat in the arid conditions of the Volga region, the most promising varieties with high yield and grain quality are Marathon, Kalach 60, Blizzard, Basis, Malachite Severodonetsk jubilee.

Bioecological Features, Biochemical and Physicochemical Parameters of Grain of New Genotypes

The presented study allowed for better coverage of the features of new varieties of soft winter wheat and winter triticale, demonstrating the bioecological potential of their crops and the biochemical and physicochemical parameters of grain, which is a relevant matter. This paper presents the results of selection work on winter triticale, highlights the parameters of productivity, the biochemical composition of grain of the new Myronosets variety. The purpose of this study was to create new genotypes of winter triticale and soft winter wheat and investigate them in terms of bioecological potential and biochemical, physico-chemical parameters of grain. The study involved biometric, physico-chemical, biochemical, and mathematical research methods. The Myronosets variety has a high grain yield (6.8-7.2 t/ha), a high protein content (≥14.2%) and a composition of essential amino acids, which confirms its nutritional and consumer value. It is recommended to use flour from this variety to produce functional bakery products. For the first time, it was found that Myronosets triticale variety is superior (4919 mg/100 g DM) to Ariivka wheat variety (3977 mg/100 g DM) and Borotba rye variety (3241 mg/100 g DM) in total amino acid content. It was found that triticale grain is inferior to wheat grain in terms of tryptophan and isoleucine content. Rye is inferior to wheat grain in all essential amino acids except leucine, and to triticale – in all amino acids except tryptophan. The most represented amino acids in triticale grain were as follows: leucine (1442 mg/100 g), valine (733 mg/100 g), phenylalanine (720 mg/100 g) and isoleucine (510 mg/100 g), in rye – leucine (1343 mg/100 g), valine (481 mg/100 g) and phenylalanine (396 mg/100 g). Further broad targeted introduction of the new variety in agroecosystems will increase the volume of grain of valuable both animal feed and to produce functional bakery products

ВЛИЯНИЕ МИКОЗНОЙ НАГРУЗКИ НА УРОЖАЙНОСТЬ И КАЧЕСТВО ЗЕРНА ОЗИМОЙ ПШЕНИЦЫ

To identify and select snow mold-resistant genotypes, 50 varieties of winter soft wheat (Triticum aestivum L.) of various origins were tested under conditions of severe biotic stress. The study was conducted on natural and infectious backgrounds (factor A) in 2019-2020 and 2020-2021 (factor B) in the Republic of Tatarstan. The predecessor is pure steam. Sowing dates are optimal for the zone. Local populations of Microdochium nivale were used to create an infectious background. Meteorological conditions during the years of research favored the development of snow mold. Infection of winter wheat plants with the disease, both against infectious and natural backgrounds, was higher in 2021. With artificial infection of M. nivale, varieties of the collection nursery were affected by snow mold in a strong (from 82 to 100%) degree. On average, over two years, it was higher than on a natural background, by 38.9%. Selyanka, Nadezhda, Yasochka, Barkan, Luganchanka, Zavichanka, Rita, TAW 42791/80 varieties, which can be considered tolerant to M. nivale in the conditions of the Republic of Tatarstan. Varieties Selyanka, Nadezhda, Yasochka, Rita, Luganchanka, with the best yield indicators, formed the largest in the experiment (more than 35 g) high-grade grain (more than 746 g/l) and can be recommended for inclusion in crossbreeding programs to create varieties resistant to M. nivale winter wheat.

The role of winter wheat plant height in the formation of grain yield depending on varietal characteristics and weather conditions

Winter wheat is one of the main food crops that ensures the national food security of Ukraine with general production and high-quality grain. The area of winter wheat sowing ranks first in Ukraine, and the production of high-quality grain is of particular relevance. In the technology of its cultivation, the selection of varieties is a decisive factor in increasing yield and improving the quality of grain. The purpose of this study was to determine the influence of weather conditions and variety characteristics during the year on plant height, lodging resistance, and yield of winter wheat. This paper presents data on the results of the research of 20 varieties of soft winter wheat in the conditions of the Research-to-Practice Centre of the Mykolaiv National Agrarian University from 2017 to 2022. During the study, generally accepted methods were used: system approach, system analysis, analysis and synthesis, field and statistical method. The study also analysed the influence of variety characteristics and weather conditions in the years under study on the yield of soft winter wheat. It was established that the optimal plant height of winter wheat varieties ranged within 94.9-100.7 cm, at which the highest grain yield is formed, from 7.09 t/ha in the Staleva variety to 7.73 t/ha in the Duma Odeska variety. An increase in the height of the winter wheat varieties under study by 4.0-6.4% led to a decrease in yield from 4.5 to 20.9%. It was established that the awned varieties of soft winter wheat formed a higher grain yield, compared to the thornless forms, which had a higher plant height and less lodging resistance. The conducted studies confirmed that, on average, the resistance to lodging was higher in the thornless forms of winter wheat plants, which is 0.4 points higher than in the awned ones. The higher average grain yield of soft winter wheat was formed by varieties of spiny forms, which is 5.8% more than that of awned varieties. The obtained results will contribute to the wide application of the varieties of soft winter wheat under study for this soil and climate zone, which will further contribute to the increase in yield and gross grain harvests.

Screening of winter soft wheat varieties of Russian and foreign breeding for resistance to brown rust in the conditions of the foothill zone of the Central Caucasus

The article describes the stages of immunology testing for the development of winter soft wheat varieties. It also discusses the issues of leaf rust resistance, the population structure of Puccinia tritici f. sp. tritici Eriks., the methods of evaluation and selection of stock material for selective breeding with multiple resistance genes and showing high genetic diversity. 25 samples of winter soft wheat (Triticum aestivum L) obtained from the N.I. Vavilov’s (VIR) plant genetic resources gene bank and 47 Thatcher isogenic lines with the following genes were used as test articles. The study showed that the following genes could be considered effective for the resistance to a local population of leaf rust: Lr9, Lr19, Lr24, Lr25, Lr30, Lr32, Lr34, Lr36, Lr41, Lr42, Lr45, Lr47, Lr51, Lr53, Lr67.The analysis of phenotypic traits allowed identifying 6 phenotypic groups: MHTT, PGTT, RHTT, NHKP, ТQТР, QHKP. The T-group phenotype that is virulent toLr9, Lr16 and has an incidence rate of 40.0% is typical for all grain producing regions in Russia and worldwide. They are predominant in the studied population of P. triticinа. The incidence rates of RHTT, QHKP, MHTT phenotypes that are avirulent to Lr9, Lr24 genes are 13.3, 3.3 and 10.0%, respectively. The incidence rate of PGTT and NHKP phenotypes that are avirulent to, Lr9, Lr24 Lr26, Lr2а, Lr3 genes is 33.3%. The intrapopulation genetic variation estimated using the Shannon–Weaver diversity index is high (H=2.51).The screening allowed identifying leaf rust resistant winter soft wheat varieties ranked as follows: resistant – 11, intermediate – 9, susceptible – 5 samples. It was proposed to use winter soft wheat varieties of foreign breeding from the Collection of Worldwide Crop Genetic Resources (Vavilov All-Russian Scientific Research Institute of Plant Industry (VIR)), such as Dorota (France), Genoveva (Slovakia), Arial (Ukraine), Elton (USA), Verita (Slovakia), Muza (Poland), Alauda (Germany), Fenezja (Poland), Vatazbok (Ukraine), and Russian varieties of Prima and Omskaya 5.