scholarly journals ASSESSMENT OF YIELD AND ADAPTIVE POTENTIAL OF PEA VARIETIES IN THE CONDITIONS OF THE SOUTHERN FOREST STEPPE OF THE NORTHERN URALS

2020 ◽  
Vol 15 (2) ◽  
pp. 49-52
Author(s):  
Valeriy Sapega ◽  
Aleksandr Mitrikovskiy
Keyword(s):  
Environmental Conditions ◽  
Regression Coefficient ◽  
Steppe Zone ◽  
Comprehensive Assessment ◽  
Yield Potential ◽  
Forest Steppe ◽  
Adaptive Potential ◽  
Ecological Adaptability ◽  
Ecological Plasticity ◽  
Range Of Variation

The studies were carried out in 2015–2018 in the southern forest-steppe of Tyumen region in order to assess the yield, realize its potential and ecological plasticity of pea varieties admitted for use in the region, to identify the best genotypes. The material for the study was the data on the yield of eight varieties of peas. The index of environmental conditions and ecological plasticity were determined according to the method of S.A. Eberhart, W.A. Russell, the share of yield, relative to the average variety, and the realization of its potential - according to L.A. Zhivotkov and E.D. Nettevich, the yield range - according to V.A. Zykin. The index of environmental conditions in the years of testing varied from 0.89 (2015) to -1.04 (2016). Salamanca variety was characterized by the highest yield potential and the highest adaptability, in comparison with the average variety, in the most favorable (120.3%) and most unfavorable conditions (141.7%). On average for 2015–2018 the best in terms of yield was Omskiy 9 variety (1.98 t/ha). At the same time, the range of variation in the value of this indicator for the analyzed was significant - from 73.8% (Yamalskiy) to 89.0% (Kumir). Omskiy 9 variety (69.0%) was characterized by the highest value of the realization of the yield potential, and the lowest - Kumir (50.7%). The varieties Omskiy 9 (bi = 1.17), Kumir (bi = 1.13) and Salamanca (bi = 1.15) were characterized by the highest responsiveness to changes in environmental conditions - these are varieties of the intensive type. Weak responsiveness to changes in environmental conditions was found in the varieties Yamalsky (bi = 0.80) and Yamal (bi = 0.86). The varieties Batrak, Agrointel and Tomas, with a regression coefficient equal to or close to one, are classified as plastic. The Tomas variety was the most stable (Si2 = 0.16), the least - Kumir (Si2 = 15.98). On the basis of a comprehensive assessment of yield and parameters of ecological adaptability, the best varieties in the southern forest-steppe zone of Tyumen region were recognized as Omskiy 9 and Salamanca

scholarly journals ECOLOGICAL PLASTICITY OF SPRING OATS IN THE CONDITIONS OF WESTERN SIBERIA

2018 ◽  
Vol 48 (3) ◽  
pp. 21-27
Author(s):  
M. A. Kozyrenko ◽  
V. N. Pakul ◽  
D. E. Androsov
Keyword(s):  
Environmental Conditions ◽  
Western Siberia ◽  
Plant Genetic Resources ◽  
Steppe Zone ◽  
Dispersion Analysis ◽  
Yield Stability ◽  
High Yield ◽  
Forest Steppe ◽  
Ecological Plasticity ◽  
The Usa

The works presents the results of studying 165 specimen of spring oats from the world collection The N.I. Vavilov All-Russian Research Institute of Plant Genetic Resources. The research was conducted in the northern forest-steppe zone of Western Siberia in 2014-2016. The soil on which the research was done can be characterized as leached chernozem, heavy loam by texture and particle size distribution, of medium capacity. The content of humus equals 7.8%, reaction of soil solution is close to neutral, рН is 6.0. In the horizon of 0-40 cm the content of N-NO3 is 35.4mg/kg, P2O5 – 122 mg/kg, K2O – 98 mg/kg. An assessment is given to spring oat specimen by the parameters of ecological plasticity bi and yield stability Si2 . The research was conducted in the conditions characterized in accordance with the index of environmental conditions Ij. The most favourable conditions developed in 2016, when the environment index Ij equaled 109.2. Adverse conditions were identifi ed in 2014, when Ij equaled -46.25, and in 2015, when Ij equaled -62.99. By the results of the dispersion analysis the dominating infl uence of environmental conditions on the yield of spring oat specimen is established at 85.3%, the share of genotype infl uence is 2.6%. Eight specimen of spring oats proved to exceed Creole standard variety by yield with the trait variability being from 29.3% to 87.1%. Sources for creation of intensive type varieties, with high responsiveness to favorable conditions for growth and development are identifi ed: IL 86-1158 (to 14316, the USA), Jumbo (to 14702, Germany), Hamilton (to 14761, the USA), Talisman (to 14785, Russia), Omikho (to 14827, Russia), OA 269 (to 14992, Canada), Stayer (to 15181, Russia), Eclipse (to 15187, Russia). High-yielding genotypes which react to environmental conditions to a medium degree (bi is nearing a unit), and have high yield stability (Si2 is nearing zero) are defi ned, namely Express (to 14505, Russia), bi = 1.04, Si2 = 0.053, Yubilyar (to 14723, Belarus), bi = 0.92, Si2 = 0.070, C.I. 7321 (to 14737, the USA), bi = 1.09, Si2 = 0.076, Vallntin (to 15189, Slovakia), bi = 1.13, Si2 = 0.050, CDC Bell (to 14805, Canada), bi = 0.62, Si2 = 0.0065.

scholarly journals Influence of climatic conditions on productivity and adaptability of Camelina sativa

2020 ◽  
Vol 224 ◽  
pp. 04006
Author(s):  
E L Turina ◽  
T Ya Prakhova
Keyword(s):  
Environmental Conditions ◽  
Steppe Zone ◽  
Camelina Sativa ◽  
Climatic Conditions ◽  
Forest Steppe ◽  
Hydrothermal Conditions ◽  
Middle Volga Region ◽  
Hydrothermal Coefficient ◽  
Climate Conditions ◽  
The Crimea

The purpose of the research is to assess the productivity and adaptability of Camelina sativa depending on the natural and climatic conditions of the forest-steppe zone of the Middle Volga region and the steppe Crimea. The researches were conducted in two regions (Penza and Crimea) with contrasting hydrothermal conditions in 2015–2019 years. Climate conditions in the years of researches were characterized by significant variability in both the degree of humidity and temperature regime in both regions. The hydrothermal coefficient in the Crimea varied in the range of 0.23–1.11, in the conditions of Penza - from 0.45 to 1.10. The index of environmental conditions varied from -0.58 to 1.28 units depending on the natural and climatic zone. On average, in 2015–2019, the productivity of Camelina changed from 1.45 to 1.79 t/ha in Penza and from 0.56 to 1.66 t/ha in Crimea. The highest yield of Camelina sativa was recorded in 2016 in Penza and in 2017 in the Crimea and amounted to 1.79 and 1.66 t/ha, respectively. The value of the index of environmental conditions is 1.17 and 1.28 with hydrothermal coefficient of 0.82 and 0.61, respectively. Depending on the conditions of the year and the region, the oil content varied from 33.9 to 43.9 %. At the same time, there is a tendency to decrease the amount of oil for all years of study in the direction from the Crimea to the zone of the Penza region. Camelina sativa is characterized by a high level of resistance to stressful conditions (0.49– 1.10), differs in environmental adaptability (bi=1.15–1.17), has a high fitness criterion, 41.2–41.5 g/m2, depending on the region.

scholarly journals Assessment of ecological plasticity and stability of sunflower hybrids (Helianthus annuus L.) in Ukrainian Steppe

2018 ◽  
Vol 8 (1) ◽  
pp. 289-296
Author(s):  
O. A. Eremenko ◽  
V. V. Kalitka ◽  
S. M. Kalenska ◽  
V. M. Malkina
Keyword(s):  
Steppe Zone ◽  
Yield Potential ◽  
Ecological Stability ◽  
Ecological Plasticity ◽  
Average Group ◽  
Relative Air Humidity ◽  
Dry Steppe ◽  
Cultivation Technology ◽  
Varying Environments ◽  
Growing Conditions

Modern hybrids of sunflower show a pronounced response to changes in agrometeorological conditions of their growing. The<br />research was carried out during 2013-2015 under conditions of insufficient moisture in the Southern steppe of Ukraine. Field<br />and mathematical-statistical methods were used. A comparative assessment of levels of ecological stability was made for 7<br />sunflower hybrids (the company “Pioneer”). The application of plasticity and stability analysis by the Eberhard-Russell method<br />allows carrying out an integrated assessment of new hybrids in terms of their adaptability to growing conditions and a reaction<br />norm of genotypes to cultivation technology. In the dry steppe zone the sunflower realizes 45% of its genetic yield potential.<br />The highest yield of the studied hybrids was observed in 2013 when, despite the unfavourable hydrothermal index of the year,<br />the minimum relative air humidity during the flowering period was optimal (61.8%). A certain number of genotypes are<br />characterized by the average group value of the plasticity index of yield (i.e. close to 1), namely: PR64LE19, PR64LE71, PR64LE11, PR64A71. Stability ranges from 0.29 in the hybrid PR64LE11 to 32.51 in the hybrid PR64LE19. The hybrids PR64LE71 and PR64LE19 change their ecological plasticity under varying growing conditions. The hybrid PR64F66 is less responsive to varying environments than the whole set of hybrids on average but, compared to others, exhibits average stability. The best results were shown by the hybrids PR64F50 and PR64A89, since they are more sensitive to varying environments and more stable than other hybrids. Growing hybrids of different levels of intensity, genetically and biologically diverse, allows the effective exploitation of agroecological potential of different zones.

scholarly journals ASSESSMENT OF COLLECTION SAMPLES OF THE WINTER CAMELINA PILOSA FOR PRODUCTIVITY AND ADAPTIVITY

2021 ◽  
Author(s):  
Я.П. Татьяна
Keyword(s):  
Geographical Origin ◽  
Stability Index ◽  
Steppe Zone ◽  
Forest Steppe ◽  
Ecological Adaptability ◽  
Arid Conditions ◽  
Growing Conditions ◽  
The Stability ◽  
Favorable Conditions ◽  
Selection Of

Целью исследований являлась оценка коллекционного материала рыжика озимого по урожайности и основным параметрам адаптивности. Исследования проводили в лесостепной зоне Пензенской области в 2018–2020 гг. Объектом исследований являлись образцы рыжика озимого, различного эколого-географического происхождения. В качестве стандарта использовали сорт Барон, селекции Пензенского НИИСХ. Вегетационный период озимого рыжика в 2018 году протекал в острозасушливых условиях при ГТК=0,40. Условия вегетации в 2019 году характеризовались как засушливые, ГТК составил 0,63 единицы, сумма осадков за период составила 98,1 мм. Вегетация рыжика в 2020 году проходила при более благоприятных условиях (ГТК=1,03), сумма осадков составила 147,4 мм при температуре 19,4°С. Урожайность сортообразцов озимого рыжика, за годы исследований, варьировала в широких пределах от 130,9 до 157,2 г/м2 . Наиболее высокая продуктивность отмечена у номеров к-4164 (153,0 г/м2 ), к-4169 (153,1 г/м2 ) и к-3290 (157,2 г/м2 ), которая существенно превышала сорт Барон (на 8,7-12,9 г/м). Наибольшей экологической адаптивностью отличались образцы к-3290 (Алтайский край), к-1553 (Армения), к-4169 (Чехословакия) и сорт Барон, значения которого составили bi=0,96-1,02 и S2 d1 = 0,08-0,11. Номера к-4155, к-2224 и к-3290 отличались наибольшей стабильностью и пластичностью, показатели индекса стабильности (ИС) и индекса экологической пластичности (ИЭП) которых составили 17,4-18,8% и 1,04- 1,08. Наибольшим значением уровня стабильности сорта (ПУСС) отличались образцы к-4169, к-4164 и к-1553, значения которых составили 1,40, 1,41 и 1,46 соответственно. Число стручков на растении у сортообразцов варьировало от 151 до 287 штук, при 251 штуке на растении у сорта Барон. Количество семян в стручке варьировало в пределах 13-18 штук, масса 1000 семян в пределах 1,05-1,42 г. Наиболее крупные семена были у номеров к-4165 и к-3290, масса 1000 семян которых составила 1,40 и 1,42 г соответственно. The aim of the research was to assess the collection material of winter camelina in terms of yield and main parameters of adaptability. The studies were carried out in the forest-steppe zone of the Penza region in 2018 - 2020.The object of research was samples of winter camelina of various ecological and geographical origin. Variety Baron, selection of the Penza Research Institute of Agriculture, was used as a standard. The growing season of winter camelina in 2018 proceeded in severely arid conditions with GTC=0.40. The growing conditions in 2019 were characterized as arid, the GTC was 0.63 units, the amount of precipitation for the period was 98.1 mm. Camelina vegetation in 2020 took place under more favorable conditions (GTC=1.03), the amount of precipitation was 147.4 mm at a temperature of 19.4°C. The yield of varieties of winter camelina, over the years of research, varied widely from 130.9 to 157.2 g/m2 .The highest productivity was noted for numbers k-4164 (153.0 g/m2 ), k-4169 (153.1 g/m2 ) and k-3290 (157.2 g/m2 ), which significantly exceeded the Baron variety by (8,7-12.9 g/m)2 . Samples k-3290 (Altai Territory), k-1553 (Armenia), k-4169 (Czechoslovakia) and variety Baron were characterized by the highest ecological adaptability, the values of which were bi=0.96- 1.02 and S2 d1 =0,08-0.11.The numbers k-4155, k-2224 and k-3290 were distinguished by the greatest stability and plasticity, the indicators of the stability index (IS) and the environmental plasticity index (IEP) of which were 17.4-18.8% and 1.04-1.08%. Samples k-4169, k-4164 and k-1553 were distinguished by the highest value of the level of stability of the variety (PUSS), the value of which was 1.40, 1.41 and 1.46, respectively. The number of pods per plant in the accessions varied from 151 to 287 pods, with 251 pods per plant in the Baron variety. The number of seeds in a pod varied within 13-18 pieces, the weight of 1000 seeds was within 1.05-1.42 g. The largest seeds were for numbers k-4165 and k-3290, the weight of 1000 seeds of which was 1.40 and 1.42 g, respectively.

scholarly journals TRANSFORMATION OF THE HALOPHYTIC VEGETATION OF THE “SERDOBSKY SOLONETS” SERDOBSKY DISTRICT, PENZA REGION)

Ekosistemy ◽  
2021 ◽  
pp. 5-11
Author(s):  
L. A. Novikova ◽  
E. V. Mikhailova ◽  
V. M. Vasjukov ◽  
T. V. Gorbushina
Keyword(s):  
Plant Communities ◽  
Environmental Conditions ◽  
Vascular Plants ◽  
Anthropogenic Impact ◽  
Steppe Zone ◽  
Forest Steppe ◽  
South Eastern ◽  
Natural Monument ◽  
High Level

Halophytic vegetation is very rare in the forest-steppe zone. It was studied in the tract Serdobsky solonetsin the vicinity of Serdobsk (Serdobsky district, Penza region). The studies were conducted in the years 2009–2018, using the technique of geobotanical profiling. 80 trial areas were laid (35 in 2009 and 45 in 2008). Ecological and phytocenotic classification of plant communities is performed on the dominant principle. Comparison of two descriptions of vegetation with an interval of 10 years allows us to trace the transformation of halophytic vegetation after intensive anthropogenic impact (grazing and partial plowing) in different environmental conditions. The flora of Serdobsky solonets consists of 179 species of vascular plants, of which 13 species are included in the Red book of the Penza region (2013). The share of halophytic vegetation on the territory of Serdobsky solonetshas changed over 10 years: from 97.0 % to 63.8 %. Moreover, halophyte meadows occupied 67.0 % and halophyte steppes 30.0 % of the area in 2009. Now (2018) halophytic steppes make up 30.8 %, and halophytic meadows 33.0 %.The main stages of demutation of halophytic steppe and meadow vegetation were identified in various environmental conditions (meadows and steppes). The same stages of demutation were identified earlier for the South-Eastern Solonets (Neverskinsky district of the Penza region). However, a special stage of annual saline grasslands has been identified.This place requires protection due to the high level of floral and phytocenotic diversity. We offer to organize here a natural monument called “Serdobsky solonets”.

scholarly journals VARIOUS RESOURCES OF IMPORT SUBSTITUTION FOR RAW MATERIAL FOR BREWING INDUSTRY OF BASHKORTOSTAN

2018 ◽  
Vol 12 (4) ◽  
pp. 42-45
Author(s):  
Рустем Кадиков ◽  
Rustem Kadikov ◽  
В. Михкельман ◽  
V. Mihkel'man
Keyword(s):  
Import Substitution ◽  
Field Studies ◽  
Raw Material ◽  
Yield Potential ◽  
High Yield ◽  
Forest Steppe ◽  
Brewing Industry ◽  
Ecological Adaptability ◽  
The Republic ◽  
High Yield Potential

Field studies in the northern and southern forest-steppe zones of Bashkortostan determine the parameters of yield, grain quality and ecological adaptability of brewing barley varieties. The competitive advantage of the barley of Mikhailovskiy variety is revealed, which most consistently implements the high yield potential and brewing properties of grain by years and zones of the Republic.

scholarly journals Analysis of oats varieties of selection of the Omsk Agrarian Scientific Center for the assembly of protein per unit area

2020 ◽  
Vol 203 (12) ◽  
pp. 22-34
Author(s):  
P. Nikolaev ◽  
O. Yusova ◽  
Irina Safonova ◽  
Nikolay Aniskov
Keyword(s):  
Environmental Conditions ◽  
Agricultural Research ◽  
Stability Index ◽  
Steppe Zone ◽  
Breeding Value ◽  
Forest Steppe ◽  
Genotypic Effect ◽  
Double Row ◽  
Scientific Center ◽  
Selection Of

. In the Russian Federation, barley is widespread and cultivated in all soil and climate zones. The purpose of the research is to determine the adaptability of Omsk varieties of filmy and naked barley on the basis of “grain yield”. Methods. The research was conducted from 2015 to 2019 in the conditions of the southern forest-steppe of Omsk. A detailed analysis of the adaptivity parameters is given: the coefficient of the index of environmental conditions, plasticity and stability according; multiplicative coefficient according; the ecovalent of plasticity according; homeostaticity and the stability index; breeding value; genotypic effect, the rate of reaction of varieties to the environmental conditions. Final adaptability of varieties is estimated by the sum of ranks obtained each grade of the studied parameters. Results. The results of the research showed that the most adaptive in the conditions of the southern forest-steppe zone of the Omsk region are double-row filmy lines Nutans 4883, Nutans 4812 and variety Omskiy 101 (the sum of ranks = 34...38); multilayered membranous – Omskiy 99 and Nutans 4883 (sum of ranks = 54 and 56); two-row hulless hulless cultivar Omskiy golozernyy 1 (sum of ranks = 82); multi-row hulless varieties Omskiy golozernyy 2, Omskiy golozernyy 4 (sum of ranks = 86 and 84). Scientific novelty consists in the study of 8 varieties and 5 new promising lines of filmy and naked groups of barley, selection of the Omsk agricultural research center. The most adaptive varieties and lines for the conditions of the southern forest-steppe of Western Siberia are identified, which are recommended for introduction into production and for further breeding work.

К вопросу реновации зеленых насаждений санаторных парков

2018 ◽  
pp. 12-28
Author(s):  
В.В. КРУГЛЯК ◽  
Е.И. ГУРЬЕВА
Keyword(s):  
Quercus Robur ◽  
Spatial Organization ◽  
Steppe Zone ◽  
Comprehensive Assessment ◽  
Green Spaces ◽  
Forest Steppe ◽  
General Tendency ◽  
Natural Origin ◽  
Voronezh Region ◽  
Health Resorts

Зеленые насаждения санаторных парков (Воронежская область) закладывались в предвоенные годы на основе дворянских усадеб. В настоящее время они на 60% представлены искусственными насаждениями. Характеризуются усилением деградации, снижением санитарно-гигиенических, декоративных и рекреационных функций и нуждаются в реновации. Актуальность темы обусловлена острой необходимостью улучшения функционирования санаторных парковых территорий в современных условиях путем обогащения ассортимента с обоснованием их пространственного размещения и ландшафтно-эстетической ценности. Цель исследований – обоснование мероприятий по реновации и оптимизации зеленых насаждений санаторных парков на основе их комплексной оценки в современных условиях. Выявлено, что повторение засушливых лет, урбоэкологические условия санаторных парков лимитируют эффективное функционирование зеленых насаждений. Наибольший процент насаждений относится ко второму и третьему классам устойчивости. Здоровые деревья во втором классе составляют от 71 до 90 %. В зеленых насаждениях третьего класса устойчивости наблюдаются процессы деградации, обусловленные возрастными категориями. На основе инвентаризации установлено, что площадь зеленых насаждений искусственного и естественного происхождения санаториев Воронежской области значительно варьирует. Зеленые насаждения искусственного происхождения произрастают в санатории им. Горького (площадь 9,6 га; возраст до 88 лет). Лесные массивы естественного происхождения в санаториях им. Дзержинского, «Углянец», им. Цюрупы, дом отдыха «Петровский» составляют от 45,4 до 66,8 % парковых территорий. Доля участия лиственных древесные видов составляет около 70%. На территориях санатория им. Дзержинского и дома отдыха «Петровский» лесопарковые ландшафты включают лесные массивы с преобладанием Quercus robur (9Д1Кл). Для лесопарков санаториев лесостепной зоны отмечена общая тенденция сокращения объема крон в связи с ухудшением состояния растительности, обусловленные возрастом. (24376000 м3 – 97985110 м3). Для усиления рекреационного эффекта требуется значительно увеличить долю участия  декоративных кустарников. В общем объеме, занимаемом кронами растений в настоящее время она незначительна – менее 1 %. Рекомендовано вводить в зеленые насаждения кустарники для оптимизации пространственной структуры и повышения ландшафтно-эстетической привлекательности санаторных парков. Так как преобладание закрытых пространств в существующих насаждениях санаториев (более 50 %) приводит к монотонности в композиционном построении. Наличие системы открытых (7-25), полуоткрытых (32-47%) приведет к формированию соответствующих целям рекреации и функциям насаждений. Для соответствия функциям лечебно- оздоровительного учреждения с учетом нормативных документов предусмотрено увеличение площадей (на 20%) зоны тихого отдыха. На основе комплексной оценки зеленых насаждений санаториев, с учетом видового разнообразия и типов посадок разработана классификация пространственной организации. Определен санитарно-гигиенический и рекреационный потенциал, принципы подбора и ассортимент декоративных деревьев и кустарников для реновации санаторных парков в лесостепной зоне. Установлен регламент мероприятий при реконструкции зеленых насаждений парковых территорий лечебно-оздоровительных учреждений. Green plantations of sanatorium parks (Voronezh region) were laid in the pre-war years on the basis of noble estates. Currently, they are 60% represented by artificial plantations. Characterized by increased degradation, reduction of sanitary, decorative and recreational functions and need renovation. The relevance of the topic is due to the urgent need to improve the functioning of sanatorium Park areas in modern conditions by enriching the range with the justification of their spatial location and landscape and aesthetic value. The purpose of the research is to substantiate measures for the renovation and optimization of green spaces of sanatorium parks on the basis of their comprehensive assessment in modern conditions. It is revealed that the repetition of dry years, urban ecological conditions of sanatorium parks limit the effective functioning of green spaces. The highest percentage of plantings belongs to the second and third classes of stability. Healthy trees in the second class are from 71 to 90%. In the green spaces of the third class of sustainability there are processes of degradation due to age categories. On the basis of the inventory it was found that the area of green spaces of artificial and natural origin of health resorts of the Voronezh region varies significantly. Green plantations of artificial origin grow in the sanatorium. Gorky (area of 9.6 hectares; age up to 88 years). Forests of natural origin in sanatoria. Dzerzhinsky, "Uglyanets", them. Tsyurupy, the rest house "Petrovsky" make from 45,4 to 66,8% of Park territories. The share of participation of deciduous tree species is about 70%. On the territories of the sanatorium. Dzerzhinsky and the rest house "Petrovsky" forested landscapes include forests with predominance of Quercus robur (9Д1Кл). For the forest parks of the health resorts of the forest-steppe zone the General tendency of reduction of volume of crowns in connection with deterioration of the condition of vegetation caused by age is noted. (24376000 m3 – 97985110 m3). To enhance the recreational effect requires a significant increase in the share of decorative shrubs. In the total volume occupied by the canopy of plants at the present time it is insignificant – less than 1 %. It is recommended to introduce bushes into green plantings to optimize the spatial structure and increase the landscape and aesthetic attractiveness of sanatorium parks. Since the predominance of enclosed spaces in existing plantations of health resorts (more than 50 %) leads to monotony in the composition. The system of open (7-25), half-open (32-47%) will lead to the formation of appropriate recreational purposes and functions of plantations. To comply with the functions of the medical and health institution, taking into account regulatory documents, an increase in the area (by 20%) of the quiet recreation area is provided. On the basis of a comprehensive assessment of green areas of health resorts, taking into account the species diversity and types of landings, the classification of spatial organization is developed. The sanitary-hygienic and recreational potential, principles of selection and the range of decorative trees and bushes for renovation of sanatorium parks in the forest-steppe zone are defined. The rules of measures for the reconstruction of green spaces of Park areas of medical and health institutions are established.

scholarly journals ASSESSMENT OF ECOLOGICAL PLASTICITY AND STABILITY OF SPRING BARLEY

2021 ◽  
Vol 3 (27) ◽  
pp. 172-179
Author(s):  
E.G. Filippov ◽  
◽  
R.N. Bragin ◽  
A.A. Dontsova ◽  
D.P. Dontsov ◽  
...  
Keyword(s):  
Environmental Conditions ◽  
Spring Barley ◽  
Humus Content ◽  
Breeding Value ◽  
Ecological Adaptability ◽  
Ecological Plasticity ◽  
Grain Productivity ◽  
Early Maturing ◽  
High Yielding Varieties ◽  
Growing Conditions

Spring barley breeding in the Rostov region is aimed at developing early maturing, drought-resistant, high-yielding varieties with good technological qualities of grain. Productivity is mainly affected by the economic and biological parameters of the variety and the environmental conditions in the growing area. The purpose of the research is to conduct a comparative assessment of spring barley varieties by indicative parameters of ecological plasticity and yield stability to changes in environmental conditions. In 2018-2020, for a targeted study of this impact, trials with 18 spring barley varieties of Russian and foreign breeding to estimate their ecological adaptability and stability were carried out. Square of the plot – 10 m2; experiment was replicated thrice. Soil – chernozem ordinary with humus content in the arable layer at the level of 3.0–3.5%, pH = 7.0–7.1. Phosphorus content – 15–20 mg/kg of soil, exchangeable potassium – 300–500 mg/kg. The estimation of the effect on the ecological plasticity and stability of varieties was carried out according to the method of S.A. Eberhart, W.A. Rassel edited by V.A. Zykin (2005). Indicators of homeostaticity and breeding value were calculated according to the V.V. Khangildin and N.A. Litvinenko method (1981). Over the years of research, the productivity formation was mainly influenced by the factors ‘variety’ (66.1%) and ‘year’ (31.7%). The environmental conditions index showed that more favorable growing conditions were in 2020 (Ij = +0.23); in 2018, on the contrary, they were relatively unfavorable (Ij = –0.19). As a result of the three-year analysis, the highest productivity was identified in the varieties ‘Format’ (4,9 t/ha), ‘Fedos’ (4,8 t/ha) and ‘Gris’ (4,8 t/ha). In general, according to the complex of adaptivity parameters, ‘Format’ variety was distinguished. It has high indicators of breeding value (Sc = 4.6), stress resistance (Ymin-Ymax = –0.3), high stable productivity, as well as a high homeostatic index (Hom = 531) and a low coefficient of variation (V = 3.1%).

scholarly journals Natural reforestation of Kuzbass dumps

2021 ◽  
Vol 31 ◽  
pp. 00012
Author(s):  
Olga Klimova ◽  
Andrei Kupriyanov
Keyword(s):  
Pinus Sylvestris ◽  
Coal Mining ◽  
Environmental Conditions ◽  
Tree Species ◽  
Betula Pendula ◽  
Steppe Zone ◽  
Populus Tremula ◽  
Forest Steppe ◽  
Forest Stands ◽  
Invasion Species

We study the restoration of coal mining dumps through reforestation in the forest-steppe zone of Kuzbass. 3 main forest-forming species (Betula pendula, Pinus sylvestris and Populus tremula) and 11 accompanying tree species were involved in the formation of forest stands. The main forest-forming species was Betula pendula. The amount of renewal was found to be 10.7, 3.1 and 1.0 thousand pcs/ha in sites with favourable, moderate favourable and unfavourable environmental conditions, respectively. The level of natural reforestation on dumps in the southern forest-steppe zone can be described as weak. The renewal of the Acer negundo invasion species was determined by a continuous drift of seeds on the dumps; however, its seedlings and young undergrowth did not reach a generative age.

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