scholarly journals ОЦІНКА АДАПТИВНОЇ ЗДАТНОСТІ ТА ЕКОЛОГІЧНОЇ СТАБІЛЬНОСТІ СКОРОСТИГЛИХ ГІБРИДІВ КУКУРУДЗИ (ZEA MAYS L.) В КОНТРАСТНИХ УМОВАХ ВИПРОБУВАННЯ

2016 ◽  
Vol 6 (3) ◽  
pp. 18-25
Author(s):  
V. Yu. Cherchel ◽  
O. L. Gaidash
Keyword(s):  
Adaptive Capacity ◽  
Weather Conditions ◽  
Environmental Stability ◽  
Average Yield ◽  
Ecological Stability ◽  
Plastic Type ◽  
Growing Conditions ◽  
The Stability ◽  
Adaptive Ability ◽  
Research Period

<p><strong>Objective.</strong> Assessment of adaptive ability and environmental stability of new early-season maize hybrids created on the basis of inbred lines of hybrid germplasm and alternative germplasms was performed. <strong>Methods.</strong> Field, mathematical, and statistical. <strong>Results.</strong> The results revealed parameters of an adaptive capacity and environmental stability of 11 new inbred maize lines when testing their testcrosses obtained based on 3 testers. The DK285, DK265 and DK412 constant lines, the testcrosses of which had the highest average grain yield (5.49; 5.38; 5.25 t/ha respectively) were distinguished during the research period and they were characterized by high total adaptive capacity (1.48; 1,14; 0.75 respectively) with an intensive and plastic type of response to the variability of growing conditions. It was determined that Cross 267C sister hybrid was distinguished among the tester genotypes by the high values of the effects of the overall adaptive capacity (1.19) and the highest average yield of testcrosses (5.11 t/ha).</p><p><strong>Conclusions</strong>. We observed strong fluctuations in the average yield of grain from 1.96 to 8.13 t/ha during the study period. The level of manifestation of breeding characteristics and parameters of the ecological stability of genotypes depended on weather conditions which changed drastically during the study period and often negatively affected the assessment of genotypes. The high gradient variability of the test environments revealed a significant dependence of the stability-indicating parameters on the productivity of testcrosses. The correlation analysis showed the dependence of the hybrids productivity on the level of implementation of biometric indices of the plant under steppe conditions.</p>

AGROBIOLOGICAL FEATURES OF A NEW VARIETY OF SPRING BARLEY

1970 ◽  
pp. 56-58
Author(s):  
O. B. Batakova ◽  
V. А. Korelina ◽  
I. V. Zobnina
Keyword(s):  
Spring Barley ◽  
Economic Effect ◽  
Statistical Processing ◽  
Stability Index ◽  
Weather Conditions ◽  
Climatic Conditions ◽  
Federal State ◽  
New Variety ◽  
Growing Conditions ◽  
The Stability

The selection work has been carried out on the base of the Primorskiy branch of the Federal Center for Integrated Arctic Research of the Russian Academy of Sciences (FCIARctic) in 2005-2016, in a selection seven-field crop rotation. Various weather conditions contributed to a complete and comprehensive assessment of the selected sample. Data on agrometeorological research were provided by the Federal State Budgetary Institution “Northern UGMS” of the Hydrometсenter at the post of Kurtsevo. Assessment of breeding material was carried out by the main breeding valuable traits, taking into account the length of the growing season, resistance to lodging and grain yield according to the methodology of the State Commission for the Testing of Crops (1985).  Statistical processing of the experiment results were carried out using the genetic and selection software package AGROS version 2.07. A new variety of spring fodder barley “Kotlas” with increased adaptability for variable growing conditions was developed, it intended for cultivation in extreme climatic conditions of the Far North as an early ripening, productive, adaptive to unfavorable environmental factors to obtain concentrated feed for livestock and poultry. The variety is immune to net blotch of the Arkhangelsk population. The stability index (L) of the variety is 53. The new variety usage will increase the yield of spring barley, increase the economic efficiency of using the variety to 15%, the economic effect of introducing the variety per unit volume of production is 7.85 thousand rubles.

scholarly journals FOREST GROWING CONDITIONS OF PINUS PALLASIANA D. DON IN THE EASTERN PART OF THE SOUTHERN SLOPE OF THE MAIN RIDGE OF THE CRIMEAN MOUNTAINS

2021 ◽  
Vol 7 (73) (1) ◽  
pp. 64-74
Author(s):  
V. P. Koba ◽  
R. A. Nikiforov ◽  
V. V. Papelbu ◽  
M. L. Novitsky
Keyword(s):  
Weather Conditions ◽  
Satellite System ◽  
Research Area ◽  
Landsat 8 ◽  
Southern Slope ◽  
Crimean Mountains ◽  
Erosion Processes ◽  
Development Processes ◽  
Growing Conditions ◽  
The Stability

The objective of the research was to study the forest conditions and forest inventory characteristics of P. pallasiana in the eastern part of the southern slope of the Main ridge of the Crimean Mountains, the evaluation of its growth in connection with high-rise zoning and dynamics of soil properties. The studies were carried out using the methods of laying hypsometric profiles. Soil characteristics were studied in soil sections in five layers with an interval of 10 cm. The ecotopic grid of the Mountainous Crimea was used for the typological classification of phytocenoses. The features of the territorial distribution of artificial coniferous stands in the study area were analyzed using the data of space sensing of Landsat 8 satellite system. As a result of the conducted studies, it was found that the forest crops of P. pallasiana in the eastern part of the southern macroslope of the Main Ridge of the Crimean Mountains in the lower belt are characterized by low taxation indicators. With an increase in the height of the growing area, their state and growth intensity improve. Dynamics of forests conditions in the study area is associated with increasing dryness of the climate, a decrease in precipitation, the number of which decreases in the direction from the central to the eastern part of the southern slopes of the Main ridge of the Crimean Mountains. The high-altitude zoning of soil fertility is revealed. In the ecotopes of the middle belt, there is a decrease in the content of humus in the upper layer of the soil, which is associated with increased erosion processes in the territory of anthropogenic degradation of forest vegetation. High seasonal variability and instability of precipitation over the years, especially in the summer growing season, the weather conditions of which largely determine the implementation of growth and development processes, reduce the stability of the structure and composition of plant communities, form a negative ecological background, which determines the deterioration of the life state of P. pallasiana forest cultures. In the research area edaphic characteristics of forest crop ecotopes of P. pallasiana in the lower and middle belt correspond to forest-growing conditions such as dry sudubrava, and in the upper belt – fresh sudubrava.

scholarly journals Evaluation of ecological stability of common hop varieties

2020 ◽  
Vol 50 (1) ◽  
pp. 32-39 ◽  
Author(s):  
Yu. S. Osipova ◽  
I. Yu. Ivanova ◽  
V. V. Leontieva
Keyword(s):  
Meteorological Data ◽  
Weather Conditions ◽  
Ecological Stability ◽  
Environmentally Sustainable ◽  
Foreign Countries ◽  
Humulus Lupulus L ◽  
Cultivation Technology ◽  
Feeding Area ◽  
Chuvash Republic ◽  
Research Period

The results of the research into the yield of common hop varieties (Humulus lupulus L.) in the conditions of the southern part of VolgaVyatka region are presented. The study of adaptive potential and yield variation coefficient (V) was carried out on 250 hop samples from various regions of Russia and 17 foreign countries. The experiment was carried out in three layouts in 1989, 2004, 2018 (third year of life) and in 1990, 2005, 2019 (fourth year of life) in a collection nursery in Chuvash Republic. The plantations of the hop variety collection were located on the dark-grey forest heavy loamy soil with an average level of fertility. The soil of the nursery was weakly acidic, the feeding area was 2.5 × 1.2 m. The collection of hop varieties consists only of female plants and is kept in the live form. Weather conditions in the vegetation season of the growth and development of hop plants during the research period varied from year to year. The most favorable meteorological data for crop cultivation was recorded in 2019. The hop cultivation technology recommended in the region was used in the collection nursery. The study of varieties by ripeness groups was carried out as compared with the standard variety Podvyazny (Russia). Among the hop samples studied in three layouts, it was found that the mid-ripening variety Kruglyak-Seryak (Ukraine) (1.76) has the maximum adaptability, and Serebryanka Kalistovskaya (Russia) in the fourth year of life (V = 1.70%) has the best stability. These samples are recommended for breeding of environmentally sustainable varieties of hops.

scholarly journals EVALUATION OF ECOLOGICAL STABILITY OF THE TERRITORY OF SIMFEROPOL DISTRICT OF THE REPUBLIC OF CRIMEA

2020 ◽  
Vol 25 (4) ◽  
pp. 172-183
Author(s):  
Aleksandr Y. Melnichuk ◽  
◽  
Olga V. Zakalichnaya ◽  
Keyword(s):  
Land Use ◽  
Agricultural Land ◽  
Shannon Index ◽  
Environmental Stability ◽  
Rural Settlements ◽  
Ecological Stability ◽  
Agricultural Technologies ◽  
The Sustainable Development ◽  
The Republic ◽  
The Stability

The article considers aspects of evaluation of the spatial structure of land use and agricultural land, based on calculations of environmental stability coefficients and heterogeneity indexes. The relevance of the research is the need to obtain reliable information on the balanced land use, which is a condition for saving the natural capabilities of the agrarian landscape, the ability to self-repair and achieve the stability of the territories. The purpose of research is to assess the sustainability of land use on the example of the territory of Simferopol district. The pronounced vertical zoning of the study area introduces additional requirements and restrictions to the use of the territory. The indices were calculated using the methods for assessing the stability of territories and using the Shannon index. The spatial distribution of results was performed using GIS-technologies. The results of research to indicate the greatest diversity of the structure of agricultural land and a relative stability in the mountainous areas of the studied territory. The territories of Shirokovsky, Zhuravlevsky, Pervomaysky and Nikolaevsky rural settlements are homogeneous in the structure of land use and less environmentally stable. It is stated that the plains need to optimize the land use structure and the land of the Foothills territories need the application of precise agricultural technologies. The results can be used in the development of strategies for managing territories, in the improving the structure of land and crop areas, and in the development of other measures aimed by achieving the sustainable development of territories.

scholarly journals Adaptivity and stability parameters of heterotic tomato hybrids (Solanum lycopersicum L.) in soil greenhouses

2021 ◽  
Vol 59 (3) ◽  
pp. 330-339
Author(s):  
I. E. Bayeva ◽  
I. G. Puhachova ◽  
M. M. Dabrodzkin ◽  
A. V. Kilchevsky
Keyword(s):  
Fruit Yield ◽  
Environmental Stability ◽  
Ecological Stability ◽  
Stability Parameters ◽  
High Productivity ◽  
Testing Procedures ◽  
Solanum Lycopersicum L ◽  
Innovative Biotechnologies ◽  
The Republic ◽  
Adaptive Ability

Varieties and hybrids which are stable in yield and suitable for cultivation in various soil and climatic zones have a particular value within the conditions of industrial production. New varieties created by breeders should be characterized by the highest yield in favorable conditions, and, at the same time, by the stable yield in other conditions, i.e. be highly accommodative. The aim of the research was to assess environmental stability and plasticity parameters of tomato hybrids according to the main characteristics of yield and then to select the hybrids F1 with high productivity and stability in soil greenhouses. The calculation of adaptive ability and ecological stability indexes was carried out according to the method of A.V. Kilchevsky and L.V. Khotyleva using the ADIS program. As a result, some hybrids were identified as heavy yielding and with high general adaptive ability according to the following parameters: early fruit yield - NikolaçLine‑2, Line‑4×Line‑2, NikolaçLine 19/3, NikolaçLine-9, Line TX-144×Irishka, Line B-3-1-8×Line 19/0, Line C-9464×Line 19/0; on the basis of “commercial fruit yield” - NikolaçLine-2, TX-144×Line-2, Line TX-144×Irishka, TX140×Line-2, Line TX-140×Line 19/3, Line B-3-1-8×Line 19/0, Line C-9464×Line 19/0; by the weight of commercial fruit - NikolaçLine 19/3, Line TX-144çLine 19/3, Line B-3-1-8×Line 19/0. Greater part of yield parameters was stable for hybrids NikolaçLine-2, Line-4×Line-2, TX-140×Line-2, Line B-3-1-8×Line 19/0, Line TX-144×Irishka. Hybrids combinations Azart and Vityaz have successfully passed the test and were recommended for planting on the territory of the Republic of Belarus. Thus, feasibility of ecological stability and plasticity assessment at the final stage of breeding process has been proven. It reduces possibility of errors in choosing hybrids for State testing procedures. Acknowledgments. The research was carried out within the framework of the State Program “Innovative Biotechnologies” for 2010-2012 and for the period up to 2015”, as well as the Interstate Target Program of the Eurasian Economic Community “Innovative Biotechnologies” for 2011-2015.

scholarly journals The estimation of environmental stability and adaptability of the grain sorghum varieties in the Republic of Bashkortostan

2021 ◽  
Vol 1 (1) ◽  
pp. 39-43
Author(s):  
R. А. Biktimirov ◽  
А. А. Nizaeva
Keyword(s):  
Environmental Conditions ◽  
Weather Conditions ◽  
Grain Sorghum ◽  
Environmental Stability ◽  
High Productivity ◽  
Long Term Study ◽  
Republic Of Bashkortostan ◽  
Environmental Adaptability ◽  
The Republic ◽  
Growing Conditions

The current paper has presented the study of productivity, environmental stability and adaptability of 11 Russian grain sorghum varieties of various groups of ripeness in the conditions of the Ural steppe of the Republic of Bashkortostan, conducted in 2015–2019. The purpose of the study was to estimate the grain sorghum varieties according to the parameters of environmental adaptability and stability of productivity in changing environmental conditions. The weather conditions during the years of study were different in temperature and water supply, which made it possible to evaluate the lines in the contrasting cultivation conditions. The index of environmental conditions for grain yield of grain sorghum in 2015 was 0.9, in 2016 it was 1.3, in 2017 it was -1.0, in 2019 it was -1.2. The data completely characterizes the weather conditions of the years of study and their effect on the growth and development of plants. Environmental adaptability (bi) and stability (Ϭ2d) were calculated according to the methods of S.A. Eberchart and W. A. Rassel (1966) interpreted by V. A. Zykin, stress resistance (Ymin–Ymax) was estimated according to the equation of A. A. Rossille, J. Hamblin interpreted by A. A. Goncharenko, productivity range (d) was evaluated according to V. A. Zykin. The varieties ‘Kamelik’, ‘Ogonyok’, ‘Orlovskoe’ turned out to be adaptable (bi was close to 1); the varieties ‘Slavyanka’, ‘Zernyshko’ and ‘Ros’ were responsive to the improvement of growing conditions (bi > 1). Based on a comprehensive estimation of the value of environmental adaptability and stability, the varieties ‘Premiera’, ‘Belochka’, ‘Ogonyok’, ‘Orlovskoe’ were identified as the best ones. These varieties are highly intensive, responsive to the improvement of growing conditions and characterized with high productivity. The paper has collected and presented the material of the long-term study of the environmental adaptability and stability of the grain sorghum productivity in the conditions of the Ural steppe of the Republic of Bashkortostan.

scholarly journals Problems and productivity of selection of winter wheat varieties with increased environmental stability

2019 ◽  
Vol 24 ◽  
pp. 20-25
Author(s):  
V. V. Bazalii ◽  
I. V. Boichuk ◽  
Yu. O. Lavrynenko ◽  
H. H. Bazalii ◽  
Ye. O. Domaratskyi ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Weather Conditions ◽  
Environmental Stability ◽  
Wheat Varieties ◽  
Yielding Capacity ◽  
Test Methodology ◽  
Growing Conditions ◽  
And Control ◽  
Winter Wheat Varieties ◽  
Selection Of

Aim. The search of adaptive response peculiarities to adverse environmental factors is an important condition of development of varietal technologies and control of adaptive potential of winter wheat varieties. Methods. The studies were carried out in accordance with the field test methodology. The wheat varieties of different types of growing, different genetic and ecological origins were studied. Results. In our studies, plasticity index (bi) of most winter wheat varieties was close to one and higher under various growing conditions. The yield advantage of a number of varieties was mainly in favourable weather conditions, and in unfavourable conditions yields were low. Varieties that are more resistant to stressful conditions (Askaniis`ka, Kuialnyk, Klarisa, Driada) were characterised by relatively low response to changes of growing conditions, their regression factor was less than one and kept reducing, their resistance to unfavourable conditions were increased. Conclusions. If severe stress limits in environmental conditions are expected, it is necessary to grow and use the winter wheat varieties with increased stability of yielding capacity in selection (Khersonska bezosta, Khersonska 99, Znakhidka odes`ka, Askaniis`ka, Klarisa (facultative). Keywords: winter wheat, plasticity, stability, yielding capacity.

Resistance of cherry varieties to spring return frozes in the conditions of Astrakhan region

2020 ◽  
Author(s):  
A.A. Dronic A.A. ◽  
Keyword(s):  
Weather Conditions ◽  
Damage Score ◽  
The Stability ◽  
Almost All ◽  
Total Damage ◽  
Continental Climate ◽  
Unfavorable Weather

The article presents an assessment of the stability of introduced cherry varieties to spring return frosts in 2020 in the conditions of the sharply continental climate of the Astrakhan region. As a result of unfavorable weather conditions, the total damage score of all varieties was 2-5 points. Almost all the studied varieties showed an insufficient level of resistance to recurrent frosts.

scholarly journals Fast-Scale Instability and Stabilization by Adaptive Slope Compensation of a PV-Fed Differential Boost Inverter

2021 ◽  
Vol 11 (5) ◽  
pp. 2106
Author(s):  
Abdelali El Aroudi ◽  
Mohamed Debbat ◽  
Mohammed Al-Numay ◽  
Abdelmajid Abouloiafa
Keyword(s):  
Numerical Simulations ◽  
Full Range ◽  
Weather Conditions ◽  
Current Loop ◽  
Point Tracking ◽  
Bifurcation Phenomena ◽  
Slope Compensation ◽  
Power Point ◽  
The Stability ◽  
Detailed Circuit

Numerical simulations reveal that a single-stage differential boost AC module supplied from a PV module under an Maximum Power Point Tracking (MPPT) control at the input DC port and with current synchronization at the AC grid port might exhibit bifurcation phenomena under some weather conditions leading to subharmonic oscillation at the fast-switching scale. This paper will use discrete-time approach to characterize such behavior and to identify the onset of fast-scale instability. Slope compensation is used in the inner current loop to improve the stability of the system. The compensation slope values needed to guarantee stability for the full range of operating duty cycle and leading to an optimal deadbeat response are determined. The validity of the followed procedures is finally validated by a numerical simulations performed on a detailed circuit-level switched model of the AC module.

scholarly journals Climate Change and Internet of Things Technologies—Sustainable Premises of Extending the Culture of the Amurg Cultivar in Transylvania—A Use Case for Târnave Vineyard

2021 ◽  
Vol 13 (15) ◽  
pp. 8170
Author(s):  
Veronica Sanda Chedea ◽  
Ana-Maria Drăgulinescu  ◽  
Liliana Lucia Tomoiagă  ◽  
Cristina Bălăceanu ◽  
Maria Lucia Iliescu 
Keyword(s):  
Climate Change ◽  
Weather Conditions ◽  
White Wine ◽  
Time Investment ◽  
Protected Designation Of Origin ◽  
Average Annual Temperature ◽  
Insect Infestations ◽  
Long Time ◽  
The Stability ◽  
Red Grape

Known for its dry and semi-dry white wine, the Târnave vineyard located in central Transylvania is challenged by the current climate change, which has resulted in an increase of the period of active vegetation by approximately 15–20 days, the average annual temperature by 1–1.5 °C and also the amount of useful temperatures (useful thermal balance for the grapevine). Furthermore, the frost periods have been reduced. Transylvania is an important Romanian region for grapevine cultivation. In this context, one can use the climatic changes to expand their wine assortment by cultivating an autochthonous grapevine variety called Amurg. Amurg is a red grape cultivar homologated at SCDVV Blaj, which also homologated 7 cultivars and 11 clones. Because viticulture depends on the stability of meteorological and hydrological parameters of the growing area, its foundations are challenged by climate change. Grapevine production is a long time investment, taking at least five years before the freshly planted vines produce the desired quality berries. We propose the implementation of a climate change-based precision viticulture turn-key solution for environmental monitoring in the Târnave vineyard. This solution aims to evaluate the grapevine’s micro-climate to extend the sustainable cultivation of the Amurg red grapes cultivar in Transylvania with the final goal of obtaining Protected Designation of Origin (PDO) rosé and red wines from this region. Worldwide, the changing conditions from the existing climate (a 30-year average), used in the past hundred years to dictate local standards, such as new and erratic trends of temperature and humidity regimes, late spring freezes, early fall frosts, storms, heatwaves, droughts, area wildfires, and insect infestations, would create dynamic problems for all farmers to thrive. These conditions will make it challenging to predict shifts in each of the components of seasonal weather conditions. Our proposed system also aims to give a solution that can be adapted to other vineyards as well.

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