scholarly journals The productivity and resistance to unfavorable environmental factors of the facultative barley varieties sown in the autumn and spring

2020 ◽  
pp. 15-20
Author(s):  
L. A. Radchenko ◽  
A. F. Radchenko ◽  
Т. L. Ganotskaya ◽  
E. G. Filippov ◽  
A. A. Dontsova
Keyword(s):  
Agricultural Research ◽  
Spring Barley ◽  
Steppe Zone ◽  
Research Center ◽  
Standard Variety ◽  
Sowing Time ◽  
Grain Crops ◽  
Study Results ◽  
Standard Value ◽  
The Republic

The current paper has presented the study results of the facultative barley varieties of the FSBSI “Agricultural Research Center “Donskoy” in the conditions of the Republic of Crimea. The study was carried out in 2017-2019 on the experimental plots of the department of introduction and technologies in field cultivation and animal husbandryof the FSBSI Research Institute of Agriculture of the Crimea, located in the village of Klepinino of Krasnogvardeisky district, in the central steppe zone of the peninsula. There has been studied the productivity of six facultative varieties (developed in the FSBSI “Agricultural Research Center “Donskoy”) in comparison with the variety ‘Dostoyny' (developed in the Breeding and Genetic Institute of the National Center for Seed and Variety Study of the National Academy of Agricultural Sciences of Ukraine). The varieties were sown in the autumn and spring, at the optimum sowing time for winter grain crops. The trials were conducted with the grain crops sown in weedfree fallow and after sunflower. The spring barley variety ‘Strannik' (the Prikumskaya Experimental Breeding Station) was used as a control variety for spring sowing. When sowing in the autumn in weedfree fallow, the varieties ‘Foks 1' and ‘Master' were at the level of the standard variety with the productivity of 6.37 and 6.32 t/ha, respectively. When sowing in the spring, the early ripening varieties ‘Master' (2.92 t/ha), ‘Tigr' (2.88 t/ha) and ‘Foks 1' (2.70 t/ha) were the best ones, which in 2018 and 2019 significantly exceeded the standard variety ‘Dostoyny'. In 2018 the varieties ‘Vivat' and ‘Tigr' formed the productivity at the level of the standard variety when sown after sunflower in the autumn. In 2019 the best yields were produced by the variety ‘Timofey' with 3.62 t/ha (+0.17 t/ha to the standard value) and ‘Master' (+0.10 t/ha). Under more favorable conditions of 2019, when sowing in the spring the facultative varieties ‘Foks 1' and ‘Master' produced 1.89 t/ha, significantly exceeding the standard variety ‘Dostoyny' on 0.64 t/ha each. When sown after sunflower the varieties ‘Master' produced on average 1.2 t/ha (+0.32 t / ha to the standard value) and ‘Foks 1' (+0.15 t/ha).

scholarly journals Homeostaticity of the collection samples of soybeans according to the trait “seed weight per plant”

2020 ◽  
pp. 68-72
Author(s):  
A. R. Ashiev ◽  
M. V. Skulova ◽  
A. V. Chegunova
Keyword(s):  
Seed Weight ◽  
Agricultural Research ◽  
Statistical Processing ◽  
Research Center ◽  
Standard Variety ◽  
High Productivity ◽  
Ecological Adaptability ◽  
Study Results ◽  
Economically Valuable Traits ◽  
Early Ripening

The current paper has presented the study results on the homeostaticity of the collection samples of soybeans according to the trait “seed weight per plant” in the southern part of the Rostov region, conducted on the fields of the FSBSI “Agricultural Research Center “Donskoy” in 2017-2019. The purpose of the research was to determine the homeostaticity of the collection samples of soybeans according to the trait “seed weight per plant”. The objects of the research were 75 samples of soybeans of the middle early ripening group, which varied according to their morphological, biological and economically valuable traits and properties. There have been selected 27 collection samples of soybeans, which significantly exceeded the standard variety in terms of to the trait “seed weight per plant”. The soybean variety ‘Don 21' developed in the FSBSI “Agricultural Research Center “Donskoy” was used as a standard variety. The meteorological conditions during the growing season of soybeans during the years of study were different, which made it possible to objectively estimate the parameters of homeostaticity. For statistical processing of the results obtained, there were used the Dospekhov's methods of analysis of variance, the homeostaticity indices (Hom) were calculated according to V. V. Khangildin. (1984). According to the study results, it was established that the sample ‘Veselovskaya 5', ‘Line 504/11' and ‘PR 110370 OZ 006' had high productivity indices per a plant, along with high homeostaticity indices. There has been recommended to use them in breeding for homeostaticity and ecological adaptability. The highly productive samples ‘Im 55-2', ‘Kyoto', ‘Kofu', ‘Line 696-1', ‘M-91-212006, ‘RZhT Shuna', ‘SVH 14 TOS 1D' have shown a low index of homeostaticity. They could be characterized as the samples responsive to the improvement of environmental conditions and could be recommended as an initial material when developing varieties of intensive type.

scholarly journals The experience of durum wheat cultivation in the conditions of Kalmykia

2021 ◽  
pp. 34-38
Author(s):  
В. А. Goldvarg ◽  
М. V. Boktaev ◽  
А. А. Mudrova
Keyword(s):  
Durum Wheat ◽  
Grain Quality ◽  
Agricultural Research ◽  
Research Center ◽  
Experimental Plot ◽  
Wheat Varieties ◽  
Federal Research ◽  
Wheat Cultivation ◽  
Study Results ◽  
The Republic

In 2016–2020 in the Republic of Kalmykia the winter durum wheat area was sown by the variety ‘Kermen’ of joint development by the Kalmykia Research Agricultural Institute named after M.B. Narmaev, a branch of the “Pre-Kaspy Agricultural Federal Research Center RAS” (KRAI, a branch of the PkAFRC RAS) and the FSBSI “National Center of grain named after P.P. Lukyanenko”, and the variety ‘Kristella’ developed by the FSBSI Agricultural Research Center “Donskoy”. The current paper has presented the study results of productivity and grain quality of the varieties ‘Kermen’ and ‘Kristella’ on the experimental plot of the KRAI, a branch of the PkAFRC RAS over the past five years. The purpose of the study was to evaluate the winter durum wheat varieties according to the traits of productivity and grain quality for giving recommendations and their further introduction into production. In the conditions of the experimental plot of the KRAI, a branch of the PkAFRC RAS, over five years the mean productivity of the variety ‘Kermen’ exceeded that of the variety ‘Kristella’ on 0.56 t/ha, or 14.2%. There should be noted that the variety ‘Kristella’ showed the maximum productivity (5.88 t/ha) in 2016, which was a reliable addition to the variety ‘Kermen’. The varieties ‘Kermen’ and ‘Kristella’ have formed grain with a sufficiently high percentage of protein and gluten, which according to GOST 9353-2016, meets the requirements of the 1st and 3rd class for winter durum wheat. There were identified higher quality indicators in the variety ‘Kristella’.

scholarly journals THE STUDY RESULTS OF MORPHO-BIOLOGICAL TRAITS OF NORTH AMERICAN ALFALFA SAMPLES

2019 ◽  
pp. 42-46 ◽  
Author(s):  
S. A. Ignatiev ◽  
А. А. Regidin ◽  
T. V. Grayzeva ◽  
K. N. Goryunov
Keyword(s):  
Agricultural Research ◽  
Double Sequence ◽  
Climatic Conditions ◽  
Perennial Grasses ◽  
Biological Traits ◽  
Standard Variety ◽  
Forage Crops ◽  
Green Mass ◽  
Study Results ◽  
Beginning Of Flowering

Alfalfa is the most valuable forage crop spread all over the world. Due to the varietal diversity of alfalfa in the countries of North America, the laboratory of breeding and seed-growing of perennial grasses of the FSBSI “Agricultural Research Center “Donskoy” conducted the experiments over 27 samples of American and Canadian breeding to find genetic sources of economic and biological traits. The field trials were conducted according to generally accepted methods for forage crops in 2016–2018. The area of experimental plots was 1 m2 with double sequence. The period “beginning of spring germination” and “beginning of flowering” were studied depending on the climatic conditions of the year. In 2016 and 2017 spring germination took place in March, and in 2018 it was in the 1-st decade of April. Beginning of flowering in the studied samples ranged from the 3-d decade of May to the 1-st decade of June. On average, over 3 years, the number of days in the period “beginning of spring germination – beginning of flowering” varied from 68 to 73 days. This period of the standard variety was 72 days. The studied samples had this period on 1–4 days shorter, excluding the samples “K-33299” and “K-42249” (73 days). According to the yield of green mass, none of the samples reliably exceeded the standard variety “Rostovskaya 90” (3.29 kg/m2). The studied alfalfa samples formed 1.57–3.5 kg/m2 of green mass. According to the plant foliage amount, the indicators of the studied samples varied from 42 to 49%. The samples “K-33299” and “K-43272” with 49% of foliage amount slightly exceeded the standard variety “Rostovskaya 90” (48%). The hay yield of the studied samples varied from 31 to 40%, “K-43272” formed the smallest indicator (31%), “K-42249” and “K-45715” (40%) produced the largest amount and when the hay productivity of the standard variety was 35%. There have been identified reliable correlations between the yield of green mass and hay, as well as between the yield of green mass and the number of days during the period “beginning of spring germination – beginning of flowering”.

scholarly journals The study results of the winter soft wheat varieties of various ecological and geographical origin in the south of the Rostov region

2020 ◽  
pp. 12-17 ◽  
Author(s):  
M. M. Ivanisov ◽  
D. M. Marchenko ◽  
E. I. Nekrasov ◽  
I. A. Rybas ◽  
T. A. Grichanikova ◽  
...  
Keyword(s):  
Geographical Origin ◽  
Agricultural Research ◽  
Freezing Temperature ◽  
Soft Wheat ◽  
Standard Variety ◽  
Biological Productivity ◽  
Wheat Varieties ◽  
High Productivity ◽  
Study Results ◽  
Grain Crop

The improvement of grain production is the most important global task. The introduction of new highly productive varieties of the leading grain crop, winter wheat, plays a huge role in its solution. The paper presents the study results of 80 winter soft wheat varieties of various ecological and geographical origin. Frost and winter resistance rise of the developed winter soft wheat genotypes today and in the nearest future is one of the main directions of breeding work. The preservation of highly productive winter soft wheat varieties varied from 0.0% to 78.3% at a freezing temperature of –19 °C. The varieties “Kaprizulya”, “Lilit”, “Zhavoronok”, “Lydia”, “Krasa Dona”, “Polina”, “Volnitsa” and “Volny Don”, developed in the Agricultural Research Center “Donskoy” have the highest frost resistance among the studied samples, they preserved 57.0 ... 78.3% of living plants. Grain productivity of the samples ranged from 6.36 to 8.90 t/ha in 2015–2017. The 16 out of 80 studied varieties reliably (НСР05 = 0.64 t/ha) exceeded the standard variety “Don 107” for this trait. Productivity of the best samples ranged from 8.14 t/ha (“СО 911”) to 8.90 t / ha (“Laureat”). The biological productivity of winter soft wheat varieties varied from 8.37 to 9.07 t/ha, exceeding the standard variety from 0.67 t/ha (“СО 911”) to 1.37 t/ha (“Laureat”). It should be noted that the correlation coefficient of actual and biological productivity was 0.84±0.06. As a result of the current study, there were identified the genotypes “Lydia”, “Volnitsa” and “Zhavoronok” combining high productivity, grain quality and resistance to low negative temperatures.

scholarly journals The results of breeding work on naked spring barley

2021 ◽  
pp. 17-23
Author(s):  
E. S. Doroshenko ◽  
E. G. Filippov ◽  
A. A. Dontsova ◽  
D. P. Dontsov ◽  
О. Yu. Petrenko
Keyword(s):  
Grain Quality ◽  
Agricultural Research ◽  
Spring Barley ◽  
Barley Grain ◽  
Barley Variety ◽  
Standard Variety ◽  
North Caucasus ◽  
High Productivity ◽  
Naked Barley ◽  
The North

In recent decades, the demand for naked barley grain on the market has increased, that is why the breeders of the leading institutions of the Russian Federation resumed breeding research to develop new naked barley varieties. In this regard, the purpose of the current study was to develop a breeding material for naked spring barley, adapted to the conditions of the Rostov region and, on its basis, new varieties. There have been developed the new naked barley variety with high productivity and grain quality, adapted to the conditions of the North Caucasus. The study was carried out in the scientific crop rotation of the department of barley breeding and seed production of the FSBSI Agricultural Research Center “Donskoy” (Zernograd) in 2014–2020. Based on the best local spring barley varieties (‘Leon’ and ‘Shchedry’) and naked varieties of the VIR collection (‘Mancuria’ (Sweden), ‘NB-OWA’ (Nepal), ‘CDC-Dawn’ (Canada), ‘K-3780’ (Tajikistan) and ‘Golozerny’ (RF)) there have been developed and studied the new naked barley lines. There was found that according to the trait ‘plant height’ the lines ‘Leon x Golozerny’ and ‘Leon x Mancuria’ belonged to the middle-height group (90.2 cm and 83.4 cm, respectively). The rest of the lines belonged to the tall group, their height varied from 96.5 cm to 100.3 cm. According to the trait ‘earing date’ there has been identified the line ‘Leon x Golozerny’ (24V), which is more early-ripening (5 days less than that of the standard). The same line turned out to be the only one that significantly exceeded the standard (the standard variety ‘Ratnik’ on 4.5 t/ha) according to productivity +0.3 t / ha, and taking into account the absence of hulls, this difference significantly increased to +0.7 t/ha. There was established that according to the trait ‘1000-grain weight’, the lines ‘Leon x Mancuria’, ‘Leon x CDC-Dawn’, ‘Leon x K-3780’ and ‘Leon x Golozerny’ significantly exceeded the standard variety. The best indicators of grain quality were identified for the lines ‘Leon x K-3780’ and ‘Leon x Golozerny’. The lines ‘Leon x Mancuria’ and ‘Leon x Golozerny’ were the most resistant to powdery mildew. The current paper has presented the characteristics of the new naked spring barley variety ‘Zernogradsky 1717’, which has a great productivity and a set of positive economically valuable traits.

scholarly journals Ecological testing of the winter barley varieties in the conditions of the Republic of Kalmykia

2020 ◽  
pp. 48-51
Author(s):  
B. A. Goldvarg ◽  
M. V. Boktaev ◽  
E. G. Filippov ◽  
A. A. Dontsova
Keyword(s):  
Spring Barley ◽  
Maximum Yield ◽  
Climatic Conditions ◽  
Winter Barley ◽  
Standard Variety ◽  
Seeding Rate ◽  
New Variety ◽  
The Republic ◽  
Agricultural Areas ◽  
Academy Of Sciences

Barley productivity varies significantly in various agricultural areas, therefore, there should be conducted an ecological testing to identify varieties’ response to various soil and climatic conditions. That gives an opportunity to identify varieties adapted to specific soil and climatic conditions of a particular area or a region. The purpose of the current study was to conduct an ecological testing of winter barley varieties in the arid central part of theRepublicofKalmykiafor the subsequent identification of the most drought-tolerant, adaptable winter barley varieties, as well as to compare productivity of winter barley with that of spring barley in the arid conditions of the Kalmykia steppes. The study was carried out on the experimental plots of the Kalmyksky RIA named after M. B. Narmaev, a branch of the FSBSI “Pre-Caspian Agricultural Federal Research Center of the Russian Academy of Sciences” (PCAFRC) in 2018–2019. The objects of research were 9 winter barley varieties of various breeding institutions. The variety of winter barley “Erema” was a standard one, the only one from the entire set of studied varieties that has been included into the State List of Breeding Achievements of theRussian Federation, recommended for cultivation in theRepublicofKalmykia. The trials were laid in four sequences with a systematic arrangement of variants. The total area of the plot was60 m2, the registration plot was50 m2. The seeding rate was 350 pcs. Of germinating seeds per1 m2. The forecrop was winter wheat sown in a fallow land. The study has found that the productivity of the varieties “Timofei”, “Romans”, “Sprinter”, and “Molot” were significantly inferior to that of the standard variety. The productivity of the varieties “Espada”, “Kuzen”, “Vivat”, “Samson” were at the same level as of the standard variety. It should be noted that the maximum yield (4.13 t/ha) was produced by the new variety “Vivat” in 2018. The variety has an undoubted prospect to be cultivated in this region, as it is a facultative one according to the biological type of development, unlike the other studied varieties.

scholarly journals Estimation of productivity of the new peas lines and determination of their adaptability parameters

2021 ◽  
pp. 45-49
Author(s):  
А. R. Ashiev ◽  
К. N. Khabibullin ◽  
А. V. Chegunova ◽  
М. В. Skulova
Keyword(s):  
Agricultural Research ◽  
Breeding Value ◽  
Research Center ◽  
Standard Variety ◽  
Cultivation Conditions ◽  
The North ◽  
Grain Productivity ◽  
The Mean ◽  
Adaptability Parameters ◽  
Variety Testing

The purpose of the current study was to consider and identify promising peas lines with high grain productivity and determine their adaptability parameters. The field study was carried out at the FSBSI “Agricultural Research Center “Donskoy”, located in the southern part of the Rostov region during the 4-year competitive variety testing (2017–2020). The objects of the study were 19 breeding lines developed by the FSBSI “Agricultural Research Center “Donskoy”. All lines were of a leafless type. The standard variety was the variety ‘Aksaysky usaty 5’. The lines ‘G-1002’ (2.60 t/ha), ‘G-1003’ (2.81 t/ha), ‘G-1005’ (2.58 t/ha), ‘G-1007’ (2.56 t/ha), ‘G-1014’ (2.63 t / ha) and ‘B-3790/30-3’ (2.54 t/ha) showed a significant excess over the standard variety. The mean productivity in the competitive variety testing of 2017–2020 was 2.41 t/ha. The maximum productivity difference among the years was 1.63 t/ha, or 89% of the mean productivity. This indicates a high contrast of the cultivation conditions over the years. There have been identified the adaptability parameters of the pea lines (stress resistance, genetic flexibility, homeostaticity and breeding value), which exceeded grain productivity of the standard variety. The lines ‘G-1014’ (5.31), ‘G-1007’ (6.12), and ‘B-3790/30-3’ (6.47) showed the highest homeostaticity. The productivity of these lines was more even over the years and it is preferable to cultivate them in contrasting conditions (zones of risky farming, low agricultural background). The lines ‘G-1002’ (4.19), ‘G-1005’ (4.53) were a bit inferior to them. The line ‘G-1003’ had the lowest level of homeostaticity (3.98). The lines ‘G-1014’ (1.49), ‘G-1007’ (1.47), ‘B-3790/30-3’ (1.44) were characterized with the greatest indicator of breeding value. According to the results of the competitive variety testing in 2017–2019, in 2019 the line ‘G-1003’ with the highest grain productivity, was sent to the State Variety Testing under the name ‘Zernogradsky usaty’ in the North Caucasian (6) region. According to the estimation results of the adaptive properties, the variety is responsive to the improvement of cultivation conditions and has been recommended for cultivation in intensive technology.

scholarly journals Productivity and adaptability of winter bread wheat varieties developed by the SSE “Agricultural research center «Donskoy»” in the southern part of the Rostov region

2021 ◽  
Vol 2(26) ◽  
pp. 261-270
Author(s):  
V.L. Chernova ◽  
◽  
S.V. Podgorny ◽  
O.V. Skripka ◽  
A.P. Samofalov ◽  
...  
Keyword(s):  
Adaptive Capacity ◽  
Bread Wheat ◽  
Plant Density ◽  
Agricultural Research ◽  
Breeding Value ◽  
Research Center ◽  
Ecological Stability ◽  
Wheat Varieties ◽  
Winter Bread Wheat ◽  
Study Results

The current paper has presented the results of a five-year (2016–2020) study of nine winter bread wheat varieties (‘Aksinya’, ‘Nakhodka’, ‘Etyud’, ‘Shef’, ‘Donskaya Step’, ‘Yubiley Dona’, ‘Univer’, ‘Zodiak’, ‘Ermak’ – standard) developed in the SSE “Agricultural Research Center «Donskoy»” (city of Zernograd). In the competitive variety testing, they were scrutinized according to productivity, its elements, ecological stability, adaptability and breeding value. The purpose was to study the new winter bread wheat varieties of intensive type developed by the ARC “Donskoy” on productivity, adaptability and their indicators, as well as a balance between them, in order to identify new promising genotypes. According to the study results, it has been found that the average productivity was 9.32 t/ha in 2016–2020. The highest productivity was identified in the varieties ‘Univer’ (9.86 t/ha) and ‘Donskaya Step’ (9.76 t/ha). Structural analysis of the studied varieties has shown that their productivity was formed due to such elements as ‘productive plant density’ (variety ‘Shef’); ‘productive tilling capacity’ (variety ‘Etyud’); ‘number of spikelets per head’ (variety ‘Univer’); ‘number of kernels per head’ (variety ‘Ermak’); ‘1000-grain weight’ (variety ‘Zodiak’). While studying the varieties according to general adaptive capacity, such varieties as ‘Zodiak’ (0.10), ‘Donskaya Step’ (0.44) and ‘Univer’ (0.54) have been identified. Varieties ‘Yubiley Dona’ (1.07), ‘Donskaya Step’ (1.06), ‘Univer’ (1.05) and standard variety ‘Ermak’ (1.02) were found highly adaptable to environmental conditions, i.e. these varieties positively respond to the improvement of growing conditions and belong to the varieties of intensive type. Variety ‘Etyud’ (0.03) has demonstrated the maximum stability over the years of study, ‘Univer’ (0.60) and ‘Ermak’ (0.17) turned to be less stable. In our trials, all varieties had a breeding value almost at the same level, ranging from 5.10 (‘Ermak’) to 5.96 (‘Donskaya Step’). Taking into account the complex of such indicators as general adaptive capacity, stability and breeding value, varieties ‘Donskaya Step’ and ‘Univer’ can be referred to as the most adaptive ones among all studied in the current work.

scholarly journals The Influence of Different Seeding Application Rates and Sowing Time on Maize Hybrids’ Productivity in the Conditions of the Republic of Bashkortostan’s Southern Forest-Steppe Zone

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Bulat Akhiyarov ◽  
Igor Kuznetsov ◽  
Rail Alimgafarov ◽  
Damir Islamgulov ◽  
Rishat Abdulvaleyev
Keyword(s):  
Steppe Zone ◽  
Application Rate ◽  
Planting Density ◽  
Forest Steppe ◽  
Sowing Time ◽  
Application Rates ◽  
Republic Of Bashkortostan ◽  
Maize Cultivation ◽  
The Republic ◽  
Poultry Diets

Maize takes the leading place in yield and is one of the most common crops in the world. Selection of the optimal seeding application rate and time is among the central issues in maize cultivation technology and is highly relevant. The research made in 2018–2020 aimed at improving the maize technology block for grain (seeding application rate and sowing time, southern forest-steppe, the Republic of Bashkortostan). For this purpose, a field experiment was launched in a fourfold replication. The experimental design included hybrids: Nur, Mashuk 171, Baikal and Mashuk 220 with a planting density of 60 (control), 70, 80, and 90 thousand pcs/ha. The experiment revealed a high correlation dependence of the yield of green mass and grain on the sowing time (r = 0.876–0.915 and r = 0.951–0.963). In the conditions of the Republic of Bashkortostan’s southern forest-steppe, Baikal and Mashuk 171 hybrids are recommended to be used for animals and poultry diets and the planning of maize cultivation technological schemes at early sowing time (May 10) and a seeding application rate of 80 thousand pcs/ha. The results of the research apply to the formation of agricultural feeding diets.

scholarly journals Variability of characteristics valuable for breeding of spring barley

2019 ◽  
Vol 49 (4) ◽  
pp. 17-23 ◽  
Author(s):  
R. R. Lamazhap ◽  
A. G. Lipshin
Keyword(s):  
Crop Yields ◽  
Spring Barley ◽  
Weather Conditions ◽  
Steppe Zone ◽  
High Mass ◽  
Forest Steppe ◽  
Yield Structure ◽  
The Republic ◽  
Bare Fallow ◽  
Methodological Guidelines

The results of the research (2016–2018) into variability of characteristics of spring barley with the purpose of obtaining the most resistant varieties are presented. The study was conducted in the crop rotation in the breeding nursery of competitive variety testing in the forest-steppe zone of the Republic of Tuva. It was preceded by bare fallow and repeated four times. The soil was dark chestnut, light loamy. The area of the plot registered for the study was 28 m2. Testing, phenological observations, crop records and data processing were carried out in accordance with the approved methodological guidelines. The weather conditions for moisture availability and the average daily temperature regime during the study period varied signifi cantly:  in 2016, 2018, which was excessively wet, HTC (hydrothermal coeffcient) was 1.65, 1.90, in moderately humid 2017 HTC equaled 1.36. This made it possible to reliably identify more adapted biotypes of spring barley. In the Republic of Tuva, the yield of spring barley largely depends on the adaptive properties of cultivated varieties and the implementation of the main parameters of the yield structure: the number of productive stems, pieces/m2 (r = 0.726 ± 0.01 ... 0.960 ± 0.266); the mass of 1000 grains, g (r = 0.648 ± 0.179 ... 0.883 ± 0.245). An increase in the number of grains in an ear negatively affects crop yields (r = 0.212 ± 0.058 ... – 0.457 ± 0.126). From the samples of spring barley of Siberian breeding work that were studied in the research, the following samples were identifi ed for further breeding for productivity (L 19-101, U 50-3808, U 49-3795); a large number of productive stems (Acha, L 19-101, U 49-3795, U 50-3808); high mass of 1000 grains (Acha, L 19-101, U 50-3808, U 49-3795). These varieties should be included in the cross-breeding adaptive program on the territory of the Republic of Tuva.

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