FLAXSIBILITY OF POTATO VARIETIES IN THE URALS STEPPE ZONE

2016 ◽  
Vol 1 (3) ◽  
pp. 20-22 ◽  
Author(s):  
Аминова ◽  
Evgeniya Aminova ◽  
Мушинский ◽  
Aleksandr Mushinskiy ◽  
Герасимова ◽  
...  
Keyword(s):  
Stability Analysis ◽  
Regression Coefficient ◽  
Factor Model ◽  
Steppe Zone ◽  
Progressive Increase ◽  
The Urals ◽  
Potato Varieties ◽  
Ecological Flexibility ◽  
Growing Conditions ◽  
The Stability

The purpose of research is to identify potato varieties with high ecological flexibility and stability in the conditions of steppe zone of the Urals. The experience was laid by one-factor circuit in 3-fold repetition. The studies were conducted for middle and middle-early varieties of potatoes domestic and foreign selection. We define the parameters of their ecological plasticity and stability analysis using two-factor model (conditions and years). In 3-year data were allocated potato varieties – Artemis (58.9 t/ha), Aerrow (51.6 t/ha), Riviera (51.1 t/ha), Romano (55.2 t/ha). The regression coefficient ranged from 0.54 to 2.59, the stability coefficients vary from 0.20 to 49.04. It was found that the regression coefficient is significantly greater than one, indicating that the progressive increase in yield under the influence of improved growing conditions in such varieties as: Rainbow (Ri 2.19), Sail (Ri 2.59), Memory Kovalenko (Ri 2.41) Tarasov (Ri 2.05), Karatop (Ri 2.19) – varieties of intensive type. Revealed grade plastic – Nevsky, Spiridon, Romano, Aerrow, Scarlett Red, Riviera, Curator (Ri=0.70-1.08).

Stability and plasticity of grain weight per spike, 1000-kernel weight and yield of mid-high and semi-dwarf genotypes of winter bread wheat

2019 ◽  
pp. 81-93
Author(s):  
A.V. Yarosh ◽  
V. K. Riabchun ◽  
O. O. Chetveryk ◽  
Yu. O. Chernobai
Keyword(s):  
Bread Wheat ◽  
Geographical Origin ◽  
Regression Coefficient ◽  
Kernel Weight ◽  
Grain Weight ◽  
Environmental Response ◽  
Breeding Programs ◽  
Winter Bread Wheat ◽  
Growing Conditions ◽  
The Stability

Aim. To determine the stability and plasticity of the grain weight per spike, 1000-kernel weight and yield of mid-high and semi-dwarf winter bread wheat accessions. Results and Discussion. We determined the stability and plasticity of the grain weight per spike, 1000-kernel weight and yield of mid-high and semi-dwarf winter bread wheat accessions. The meteorological conditions during the vegetation periods in 2015-2018 made it possible to differentiate winter bread wheat accessions by stability and plasticity of the grain weight per spike, 1000-kernel weight and yield. The best winter bread wheat accessions of the NCPGRU’s collection, which were distinguished by grain weight per spike, 1000-kernel weight and yield, were evaluated for their stability degree (Sd) and plasticity level by regression coefficient. It was found that the proportion of accessions with high homeostaticity (bi <1) for the traits under investigation, which was most typical for mid-genotypes, was 70.6% for the yield, 64.7% for the 1000-kernel weight and 58.8% for the grain weight per spike, which is important for breeding for adaptability. Sources of high homeostaticity with a regression coefficient of <1 for the grain weight per spike (Zorepad Bilotserkovskyi, Anatoliia (UKR)); 1000-kernel weight (Krasa Laniv (UKR); Ilona (SVK)); yield (Pochaina, Krasa Laniv (UKR); Adel, Kazachka (RUS); OR2070011 (USA); Ilona (SVK), Darunok Podillia (UKR)) were singled out. In addition, we selected accessions with a wide environmental response (bi> 1), which can best fulfill their yield capacity under improved growing conditions or on an increased soil fertility, for the grain weight per spike (Zorepad Bilotserkovskiy, Anatoliia (UKR)); 1000-kernel weight (Harmonika, Prynada (UKR), Moskvich (RUS), Aran (AZE)); yield (Biloretskovskyi Zorepad, Prynada (UKR), Morozko, Vid (RUS)). Conclusions. The study of collection material of different eco- geographical origin enabled us to identify new sources of grain weight per spike, 1000-kernel weight and yield with increased environmental plasticity and stability, the use of which in breeding programs will contribute to the development of new highly productive and more valuable genotypes. Sources of high homeostaticity in winter bread wheat are valuable starting material to develop new highly adaptive varieties.

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 Stability analysis for seed longevity in landraces of sorghum [Sorghum bicolor (L.) Moench]

2020 ◽  
Vol 80 (01) ◽  
Author(s):  
N. Kannababu ◽  
R. Pattanayak ◽  
M. Elangovan ◽  
S. Avinash ◽  
I. K. Das ◽  
...  
Keyword(s):  
Stability Analysis ◽  
Regression Coefficient ◽  
Accelerated Aging ◽  
Storage Conditions ◽  
Seed Longevity ◽  
Environmental Indices ◽  
Germplasm Preservation ◽  
Fresh Seed ◽  
The Stability ◽  
Sorghum Bicolor L

Seed longevity in sorghum is a major determinant in seed production and germplasm preservation. Forty-six local landraces representing nine genetic races of sorghum were evaluated under accelerated aging and natural storage conditions to study the genotype-environment interactions and the stability of landraces for seed longevity. Genotype-environment interactions were highly significant indicating the influence of storage conditions on seed longevity. The stability of landraces was estimated using mean (xi), regression coefficient (bi) and regression deviation (S2di). Environmental indices for the seed longevity traits were high in E1 (fresh seed) followed by E2 (accelerated aged seeds), E3 (stored seeds for 12 months) and E4 (stored seeds for 24 months). Seven sorghum landraces viz., IC-345729 (Bicolor), IC-347571 (Caudatum), IC-347577 (Durra), IC-345244 (Durra), IC-415803 (Durra), IC-415822 (Durra bicolor) and IC-415829 (Guinea bicolor) were stable for seed longevity. These genotypes are therefore, recommended for use in further breeding to improve seed longevity in sorghum, which otherwise is generally poor.

scholarly journals Stability of Durum Wheat Genotypes in Some Agronomic Traits Under Bursa Ecological Conditions

2017 ◽  
Vol 5 (11) ◽  
pp. 1394
Author(s):  
Esra Aydoğan Çiftçi ◽  
Pakize Özlem Kurt Polat ◽  
Emre Şenyiğit ◽  
Ramazan Doğan
Keyword(s):  
Stability Analysis ◽  
Regression Coefficient ◽  
Agronomic Traits ◽  
Block Design ◽  
Climatic Conditions ◽  
Stability Parameters ◽  
Environmental Variance ◽  
Breeding Lines ◽  
Randomized Complete Block Design ◽  
The Stability

In the study it is aimed to determine the stabilities of some agronomic traits of 10 different durum wheats over the years in conditions of Bursa. Research was carried out in randomized complete block design with three replications between the years of 2008-2013. Averages of genotypes of agronomic characteristics, Eberhart and Russell’s regression coefficient and deviation from regression, Francis and Kannenberg’s coefficient of variation and environmental variance used as stability parameters. When the results of the study evaluated at the stability analysis, Amb × Çak-30 lines were determined to be stable in most of the agronomic traits. As for grain yield, which is of great importance for the producer, breeding lines of Amb × Çak -26 and Amb × Çak-30 were determined in good harmony at Bursa under different climatic conditions over five years.

Stability Analysis of the Nanjung Water Diversion Twin Tunnels based on Convergence Measurement

2019 ◽  
Vol 1 (1) ◽  
pp. 49-60
Author(s):  
Simon Heru Prassetyo ◽  
Ganda Marihot Simangunsong ◽  
Ridho Kresna Wattimena ◽  
Made Astawa Rai ◽  
Irwandy Arif ◽  
...  
Keyword(s):  
Stability Analysis ◽  
Convergence Rate ◽  
Critical Strain ◽  
Convergence Rates ◽  
Strain Analysis ◽  
Water Diversion ◽  
Tunnel Face ◽  
Tunnel Stability ◽  
The Stability ◽  
Twin Tunnels

This paper focuses on the stability analysis of the Nanjung Water Diversion Twin Tunnels using convergence measurement. The Nanjung Tunnel is horseshoe-shaped in cross-section, 10.2 m x 9.2 m in dimension, and 230 m in length. The location of the tunnel is in Curug Jompong, Margaasih Subdistrict, Bandung. Convergence monitoring was done for 144 days between February 18 and July 11, 2019. The results of the convergence measurement were recorded and plotted into the curves of convergence vs. day and convergence vs. distance from tunnel face. From these plots, the continuity of the convergence and the convergence rate in the tunnel roof and wall were then analyzed. The convergence rates from each tunnel were also compared to empirical values to determine the level of tunnel stability. In general, the trend of convergence rate shows that the Nanjung Tunnel is stable without any indication of instability. Although there was a spike in the convergence rate at several STA in the measured span, that spike was not replicated by the convergence rate in the other measured spans and it was not continuous. The stability of the Nanjung Tunnel is also confirmed from the critical strain analysis, in which most of the STA measured have strain magnitudes located below the critical strain line and are less than 1%.

Stability of bounded rapid shear flows of a granular material

1996 ◽  
Vol 308 ◽  
pp. 31-62 ◽  
Author(s):  
Chi-Hwa Wang ◽  
R. Jackson ◽  
S. Sundaresan
Keyword(s):  
Growth Rate ◽  
Stability Analysis ◽  
Granular Material ◽  
Bulk Density ◽  
Particulate Material ◽  
Dominant Mode ◽  
Marginal Stability ◽  
Sheared Layer ◽  
The Stability ◽  
Unusual Type

This paper presents a linear stability analysis of a rapidly sheared layer of granular material confined between two parallel solid plates. The form of the steady base-state solution depends on the nature of the interaction between the material and the bounding plates and three cases are considered, in which the boundaries act as sources or sinks of pseudo-thermal energy, or merely confine the material while leaving the velocity profile linear, as in unbounded shear. The stability analysis is conventional, though complicated, and the results are similar in all cases. For given physical properties of the particles and the bounding plates it is found that the condition of marginal stability depends only on the separation between the plates and the mean bulk density of the particulate material contained between them. The system is stable when the thickness of the layer is sufficiently small, but if the thickness is increased it becomes unstable, and initially the fastest growing mode is analogous to modes of the corresponding unbounded problem. However, with a further increase in thickness a new mode becomes dominant and this is of an unusual type, with no analogue in the case of unbounded shear. The growth rate of this mode passes through a maximum at a certain value of the thickness of the sheared layer, at which point it grows much faster than any mode that could be shared with the unbounded problem. The growth rate of the dominant mode also depends on the bulk density of the material, and is greatest when this is neither very large nor very small.

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