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.

scholarly journals Yield Stability Analysis of Maize (Zea mays L.) Hybrids Using Parametric and AMMI Methods

Scientifica ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Seyed Habib Shojaei ◽  
Khodadad Mostafavi ◽  
Ali Omrani ◽  
Saeed Omrani ◽  
Seyed Mohammad Nasir Mousavi ◽  
...  
Keyword(s):  
Zea Mays ◽  
Grain Yield ◽  
Zea Mays L ◽  
Block Design ◽  
High Yield ◽  
Stability Parameters ◽  
Maize Hybrids ◽  
Randomized Complete Block Design ◽  
Ammi Analysis ◽  
The Stability

The present study investigated the stability and adaptability of maize (Zea mays L.) hybrids. In this study, 12 maize hybrids were planted and examined considering the grain yield. The experiment was arranged in a randomized complete block design (RCBD) with three replications in four research stations in Iran during two crop years. The combined analysis of variance showed that genotype-environment interactions were significant at one percent probability level. The grain yield can stabilize, and hybrids with specific adaptability are recommended to each environment. Hybrids with specific adaptability can be recommended to all types of the environment. Means comparison yield of the genotypes identified DC370 as a high-yield genotype. Regarding AMMI analysis, genotype × environment interactions (GEIs) and two first components were found significant. The SC647 genotype was identified as the most stable genotype. Regarding the stability parameters, SC647 and KSC705 genotypes were selected as the most stable genotypes. From AMMI1 and AMMI2 graphs, the SC647 genotype was identified as the most stable genotype compared with other hybrids.

scholarly journals Evaluation of stability in maize hybrids using univariate parametric methods

2021 ◽  
Author(s):  
Seyed Habib Shojaei ◽  
Khodadad Mostafavi ◽  
Amirparviz Lak ◽  
Ali Omrani ◽  
Saeed Omrani ◽  
...  
Keyword(s):  
Grain Yield ◽  
Climatic Conditions ◽  
High Yield ◽  
Environment Interaction ◽  
Average Yield ◽  
Stability Parameters ◽  
Environmental Variance ◽  
Maize Hybrids ◽  
Genotype Environment Interaction ◽  
The Stability

AbstractGenotype × environment interaction is one of the complex issues of breeding programs to produce high-yielding and compatible cultivars. Interaction of genotype × environment and make the more accurate selection, the performance and stability of hybrids need to be considered simultaneously. This study aimed to investigate stable genotypes with yield using 12 maize hybrids in different climatic conditions of Iran. The experimental design used was a randomized complete blocks design in three replications in two cropping years in Karaj, Birjand, Shiraz, and Arak stations. The simple analysis of variance performed on grain yield of genotypes indicated that all hybrids studied each year and station were significantly different in grain yield. Also, the combined analysis results showed a significant effect on the environment, the effects of genotype, and the interaction of genotype × environment and t in the studied hybrids different. Comparing Duncan's mean on the data obtained from the research, KSC705 genotypes with an average yield of 7.21 and KSC704 genotype with an average yield of 7.04 were identified as high yield cultivars. In order to identify stable cultivars, six stability parameters were used. KSC260 and KSC707 genotypes had stability Based on the environmental variance, also had stability based KSC705, KSC707 genotype on environmental the coefficient of variation, and KSC260 genotypes had stability based methods of genotype and environment interaction. As well as based on Eberhart and Russell regression coefficient had the stability to KSC400 and SC647 genotypes. Also, they were identified as the most stable genotypes based on the detection coefficient method, KSC707, and KSC703 genotypes.

scholarly journals INTERAKSI GENETIK X LINGKUNGAN DAN STABILITAS JUMLAH BUAH 11 AKSESI PINANG LOKAL DENGAN PENDEKATAN PARAMETRIK

2021 ◽  
Vol 6 (2) ◽  
Author(s):  
Muhammad Roiyan Romadhon ◽  
Meity Aneke Tulalo
Keyword(s):  
Stability Analysis ◽  
Experimental Design ◽  
Block Design ◽  
Annual Plant ◽  
Randomized Complete Block Design ◽  
The Stability ◽  
Marginal Environment

Areca is an annual plant that has many benefits and a high economy. The need for areca nuts for industry is a challenge because only two varieties have been released and little farmers who plant areca nuts. Exploration of superior areca candidates are one way to overcome this problem. This aim of research is to determine the stability and adaptability of 12 local areca nuts to the number of fruit. This research was conducted at Kayuwatu Expermental Farm for 4 years from 2014-2017. The experimental design used was Randomized Complete Block Design (RCBD) 2 replications with 15 sample plants. The result of the research showed that Malinow 2 accession is a stable accession based on the stability analysis of Finlay Wilkinson and Eberhart Russel and can grow in a marginal environment, while Huntu 1 and Galangsuka Accession is a stable accession in optimal environment.

Stability of mungbean [Vigna radiata (L.) Wilczek] genotypes for seed yield during summer

2017 ◽  
Author(s):  
Prakash H. Kuchanur ◽  
C. R. Konda ◽  
Channayya Hiremath ◽  
Vijayakumar A. G.
Keyword(s):  
Analysis Of Variance ◽  
Seed Yield ◽  
Vigna Radiata ◽  
Block Design ◽  
Pooled Analysis ◽  
Stability Parameters ◽  
Stability Performance ◽  
Randomized Complete Block Design ◽  
Total Variability ◽  
The Stability

Experiments were conducted to study the stability performance over three environments for seed yield in mungbean cultivars during summer. Twenty two genotypes were evaluated by using randomized complete block design with three replications. The analysis of variance at individual locations showed significant differences among genotypes. Further, pooled analysis of variance over environments displayed highly significant differences among the genotypes, environments and G×E interaction and the contribution of genotypes, environments and G x E to the total variability were 31.94, 40.74 and 12.52 per cent, respectively. Based on the stability parameters genotypes, Co-6, LGG 460 and Pusa 7092 were found stable and high yielding across the years during summer.

scholarly journals Genotype x Environment Interaction and Stability Analysis in Okra [Abelmoschus esculentus (L.) Moench] in Cameroon

2020 ◽  
pp. 1-15
Author(s):  
Dabandata Célestin ◽  
Ngalle Hermine Bille ◽  
Nsimi Mva Armand ◽  
Ndiang Zenabou ◽  
Likeng L. I. Ngue Bénoit- Constant ◽  
...  
Keyword(s):  
Stability Analysis ◽  
Block Design ◽  
Performance Measure ◽  
Genotype X Environment Interaction ◽  
Abelmoschus Esculentus ◽  
Environment Interaction ◽  
Genotype X Environment ◽  
Randomized Complete Block Design ◽  
Peduncle Length ◽  
The Stability

A study was conducted to assess genotype x environment interaction and also to determine stability of okra (Abelmoschus esculentus L. Moench) genotypes for nine traits in Cameroon. Eight okra genotypes (including five parents of Cameroon and three exotics) were evaluated across three different locations (Dibang, Yagoua and Yaounde) using a randomized complete block design (RCBD) with three replications. Each plot consisted of three rows of six plants each. Genotype x environment interaction has been evaluated using SAS Software.  There was considerable variation for all traits studied among both genotypes and environments. Five different methods of stability analysis have been used for the comparison of the genotypes and also to determine the most suitable stability parameter of okra. The stability in relation to the characters is independent of the genotypes. A total correspondence (r=1) exist between the general mean and the Pi performance for characters such as 50 % flowering and the fruit peduncle length. For, the procedure of Lin and Binns appeared to be more of a genotype performance measure, rather than a stability measure. The Wricke’s and Shukla’s procedures of stability statistic showed the highest significant positive correlation (P<0.01) with the majority of the studied character. That makes these procedures equivalent for ranking purposes.

scholarly journals Response Of Maize Varieties To Sowing Dates In Inner Terai Region, Dang, Nepal

2019 ◽  
Vol 2 (2) ◽  
pp. 27-31
Author(s):  
Pukar Khanal ◽  
Rupak Karn ◽  
Pratibha Budhathoki Chhetri ◽  
Samita Karki ◽  
Shrawan Kumar Sah
Keyword(s):  
Unit Area ◽  
Block Design ◽  
Climatic Conditions ◽  
Spring Season ◽  
Thousand Grain Weight ◽  
Maize Hybrids ◽  
Sowing Dates ◽  
Maize Varieties ◽  
Randomized Complete Block Design ◽  
Hybrid Maize

AbstractSowing dates and varieties affect the productivity of maize. A field experiment was conducted to find out the response of maize hybrids to sowing dates on growth and productivity of maize in spring season at Lamahi, Dang in 2019. The experiment was laid out in two factor factorial Randomized Complete Block Design with four replications. The treatment consisted of combination of three different sowing dates (February 1, February12 and February 23) and two maize varieties (Arun-2 i.e. OPV and hybrid Bioseed-9220).The result revealed that earlier planting on February 1 produced the highest yield (8265 Kg ha-1) which was significantly superior than latter planting of February 12(6099 kg ha-1)and February 23 (5934 kg ha-1).The higher yield in earlier planting was due to significantly higher no of kernel per ear, non-significant but higher number of cob per unit area, thousand grain weight. Similarly, Bioseed 9220 produced higher yield (7798 kg ha-1) compared to Arun-2 (5,734 kg ha-1). The higher yield of hybrid Bioseed 9220 was because of higher number of cob per unit area harvested and more number of kernel per cob. Therefore, earlier planting with hybrid maize is recommended in spring season of Dang and locations with similar climatic conditions for higher productivity of maize.

scholarly journals Assessment of wild tomato accessions for fruit yield, physicochemical and nutritional properties under a rain forest agro-ecology

2020 ◽  
Vol 1 (2) ◽  
pp. 1-11
Author(s):  
Dorcas Ibitoye ◽  
Adesike Kolawole ◽  
Roseline Feyisola
Keyword(s):  
Rain Forest ◽  
Agronomic Traits ◽  
Block Design ◽  
Principal Component ◽  
Fruit Yield ◽  
Soluble Solids ◽  
Forest Zone ◽  
Breeding Lines ◽  
Wild Tomato ◽  
Solanum Lycopersicum L

Tomato (Solanum lycopersicum L.) is a broadly consumed fruit vegetable globally. It is one of the research mandate vegetable of the National Horticultural Research Institute (NIHORT), Ibadan, Nigeria. The institute’s contains diverse collections of tomato accessions and wild relatives, without utilization information for the African continent. With the decline in diversity and potential of cultivars, a robust tomato breeding pipeline with broad genetic base that eliminates redundancy in the development of lines with desired horticultural traits is paramount. This study evaluated the mean performance and variations of thirteen wild tomato accessions obtained from the C.M. Rick Tomato Genetic Resource Center, University of California, Davis, USA, evaluated for agronomic, nutritional and physicochemical traits under a rain forest zone in Nigeria. The accessions were planted and grown in three replications with randomized complete block design. Agronomic traits, physicochemical and nutritional parameters were measured and analyzed. There was significant (P < 0.001) variation among accessions for all traits measured. Accession LA0130 was separated from others by cluster analysis and was outstanding for its unique attributes which include: fruit yield parameters, total soluble solids, acidity and content. The principal component analysis suggests fruit yield related traits, acidity and contributed most to the variation among the 13 accessions. The results obtained can be used to breed materials adapted to a rain forest . These wild tomato accessions have genes with desirable agronomic, nutritional and physicochemical traits that could be into breeding lines to improve commercial tomato varieties.

On the Development of Transverse Ridges on Rock Glaciers

1989 ◽  
Vol 35 (121) ◽  
pp. 383-391 ◽  
Author(s):  
Deborah S. Loewenherz ◽  
Christopher J. Lawrence ◽  
Richard L. Weaver
Keyword(s):  
Stability Analysis ◽  
Newtonian Fluid ◽  
Lower Layer ◽  
Elastic Solid ◽  
Surface Region ◽  
Finite Amplitude ◽  
Climatic Conditions ◽  
Rock Glacier ◽  
Rock Glaciers ◽  
The Stability

AbstractThe stability of a low Reynolds number flow on an inclined plane is investigated with respect to modelling the initiation of transverse wave-like ridges which commonly occur on the surfaces of rock-glacier forms. In accordance with field observations indicating the presence of stratification in rock glaciers, two models of rock-glacier structure are considered, each stratified and possessing a lower layer which is treated as a Newtonian fluid. An upper, less compliant layer is treated, alternatively, as a Newtonian fluid of viscosity greater than that of the lower layer, or as an elastic solid under longitudinal compression induced by a decrease in the slope of the underlying incline. A linear stability analysis is used to examine the behaviour of each of the proposed models, and both are found to generate instabilities at wavelengths comparable to those associated with transverse surficial ridges on rock glaciers. The growth rates of a flow disturbance predicted by the viscous-stratified model appear to be too slow to account fully for the development of wave forms of finite amplitude, suggesting that other mechanisms are involved in the amplification of an initial disturbance. The results of the stability analysis of the elastic lamina model indicate that finite surficial ridges may develop on rock glaciers as a product of a buckling instability in the surface region if there is a decrease in the slope of the underlying incline. Both of the analyses illustrate that transverse ridges can occur on the surface of a rock glacier in the absence of any variations in debris supply to the system. The results further imply that the use of these features in the paleoreconstruction of Holocene climatic conditions must entail an assessment of the relative roles of external climatically driven forcingversusinternal Theologically derived instability.

Stability of fenugreek (Trigonella foenum-graecum L.) genotypes for terminal heat and water stress

2015 ◽  
Vol 38 (5) ◽  
Author(s):  
Suresh Kumar Meena ◽  
E. V. Divakara Sastry ◽  
S. S. Rajput ◽  
Yogesh Pandey
Keyword(s):  
Seed Yield ◽  
Regression Coefficient ◽  
Block Design ◽  
Stability Parameters ◽  
Trigonella Foenum Graecum ◽  
Randomized Block Design ◽  
Ammi Analysis ◽  
Component Traits ◽  
The Mean ◽  
Irrigation Levels

Thirty genotypes of fenugreek (<italic>Trigonella foenum-graecum</italic> L.) were evaluated over four environments in randomized block design with 3 replications to estimate stability parameters of seed yield and its important component traits. The environments were created by changing the dates of sowing and irrigation levels. The genotypes interacted with the environments significantly indicating non linear response of genotypes to environments. Simple correlations between seed yield and other traits indicated that pods per plant and the test weight are the two important component traits. Stability analysis indicated difference in stability among the genotype for seed yield and the component traits. A positive correlation was noted between the regression coefficient and the mean seed yield of the genotypes, thus hypothesizing that higher yielding genotypes were better suited to better environments. The results of AMMI analysis corroborated with the results obtained from stability anlaysis, although AMMI analysis provided a better chance to delineate the genotypes and environments. Genotypes UM-137, UM-128, UM-322 and RMt-1 are found relatively stable for seed yield.

Genetic Assessment of Combining Ability for Seed-Yield and Its Related Traits in Soybean [Glycine max (L.) Merrill]

2020 ◽  
Author(s):  
Gbemisola Oluwayemisi Ige ◽  
Godfree Chigeza ◽  
Subhash Chander ◽  
Abebe Tesfaye Abush ◽  
David Kolawole Ojo ◽  
...  
Keyword(s):  
Seed Yield ◽  
Combining Ability ◽  
Agronomic Traits ◽  
Block Design ◽  
Days To Flowering ◽  
Randomized Complete Block Design ◽  
Glycine Max L ◽  
Improvement Programme ◽  
Genetic Assessment ◽  
Made In

Crosses were made in line × tester mating design between a set of five IITA soybean released varieties and three plant introduced (PI) accessions obtained from World Vegetable Center, Taiwan. In order to produce sufficient seeds, F1 crosses were selfed, subsequently F2 populations along with their parents were planted in a randomized complete block design at two locations in Nigeria with three replications. Agronomic traits viz. days to flowering, days to poding, plant height, number of pods/plant and seed yield/plant were measured. Testers and lines showed significant differences for all the measured traits except days to flowering for testers. Considering the significance and magnitude of general combining ability (GCA) effect, line TGx 1988-5F was observed desirable for earliness, while line TGx 1989-19F was the best combiner for number of pods/plant and seed yield/plant. On the other hand, best tester for seed yield was PI 230970. Crosses TGx 1835-10E × PI 459025B and TGx 1987-62F × PI 459025B had significant and highest SCA effect for seed yield/plant. These two crosses appeared to be most promising for soybean yield improvement programme.

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