Genotype By Environment Interaction
Mostrando 13-24 de 100 artigos, teses e dissertações.
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13. Genetic evaluation of Pinus taeda clones from somatic embryogenesis and their genotype x environment interaction
Abstract The objective of this study was to evaluate the genotype x environment interaction and to estimate the genetic components of variance and mean using mixed models in early selection of 238 clones of Pinus taeda propagated by somatic embryogenesis. The experiment consisted of a complete blocks design, with 12 replications, with one plant per plot, in
Crop Breed. Appl. Biotechnol.. Publicado em: 2018-03
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14. Interactive effects of genotype x environment on the live weight of GIFT Nile tilapias
ABSTRACT In this paper, the existence of a genotype x environment interaction for the average daily weight in GIFT Nile tilapia (Oreochromis niloticus) in different regions in the state of Paraná (Brazil) was analyzed. The heritability results were high in the uni-characteristic analysis: 0.71, 0.72 and 0.67 for the cities of Palotina (PL), Floriano (FL) an
An. Acad. Bras. Ciênc.. Publicado em: 11/12/2017
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15. Phenotypic stability in cassava estimated by the AMMI analysis with supplementary genotypes
Abstract Adaptability is the yield response of cassava genotypes to environmental improvement, and stability is the predictability of this response to variations. The objective of this study was to evaluate the yield stability and adaptability of cassava varieties and clones using the AMMI (Additive Main Effects and Multiplicative Interaction) methodology an
Crop Breed. Appl. Biotechnol.. Publicado em: 2017-12
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16. Adaptability and stability of organic-grown arabica coffee production using the modified centroid method
Abstract This study aimed to identify promising arabica coffee genotypes for organic systems. The experiments were arranged in a randomized block design, with 30 genotypes and three replications. The adaptability and stability analysis was carried out using the modified centroid method, considering the mean yield of two biennia (2005/2006 and 2006/2007, 2007
Crop Breed. Appl. Biotechnol.. Publicado em: 2017-12
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17. A genetic study of traits related to canopy coverage in common bean
Abstract In this study we aimed to investigate genetic control of the emergence speed index (ESI) and percentage of canopy coverage (PCC) in plants, and to evaluate whether these traits can be used to identify common bean plants that rapidly provide canopy coverage. Plants from a segregating population and progenies from a cross between a large leaf line and
Crop Breed. Appl. Biotechnol.. Publicado em: 2017-12
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18. Microbial interactions: ecology in a molecular perspective
ABSTRACT The microorganism-microorganism or microorganism-host interactions are the key strategy to colonize and establish in a variety of different environments. These interactions involve all ecological aspects, including physiochemical changes, metabolite exchange, metabolite conversion, signaling, chemotaxis and genetic exchange resulting in genotype sel
Braz. J. Microbiol.. Publicado em: 2016-12
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19. Software Selegen-REML/BLUP: a useful tool for plant breeding
Abstract The software Selegen-REML/BLUP uses mixed models, and was developed to optimize the routine of plant breeding programs. It addresses the following plants categories: allogamous, automagous, of mixed mating system, and of clonal propagation. It considers several experimental designs, mating designs, genotype x environment interaction, experiments rep
Crop Breed. Appl. Biotechnol.. Publicado em: 2016-12
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20. Missing value imputation in multi-environment trials: Reconsidering the Krzanowski method
Abstract We propose a new methodology for multiple imputation when faced with missing data in multi-environmental trials with genotype-by-environment interaction, based on the imputation system developed by Krzanowski that uses the singular value decomposition (SVD) of a matrix. Several different iterative variants are described; differential weights can als
Crop Breed. Appl. Biotechnol.. Publicado em: 2016-06
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21. Factor analysis applied to the G+GE matrix via REML/BLUP for multi-environment data
Abstract The genotype x environment interaction is frequently observed in many crops and studies on environmental stratification and genotype adaptability have been proposed to understand it. The aim of this study was to carry out factor analysis in data from multi-environment experiments by the mixed model approach (REML/BLUP). Instead of adjusted phenotypi
Crop Breed. Appl. Biotechnol.. Publicado em: 2016-03
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22. Non-parametric stability analyses of dough properties in wheat
AbstractLiterature has unveiled that a paper has not been published yet on using non-parametric stability statistics (NPSSs) for evaluating genotypic stability in dough properties of wheat. Accordingly, the effects of genotype (G), environment (E) and GE interaction (GEI) on alveograph parameters, i.e. dough baking strength (W) and its tenacity (P)/extensibi
Food Sci. Technol. Publicado em: 15/09/2015
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23. Application of artificial neural networks in indirect selection: a case study on the breeding of lettuce
The efficiency of artificial neural networks (ANN) to model complex problems may enable the prediction of characteristics that are hard to measure, providing better results than the traditional indirect selection. Thus, this study aimed to investigate the potential of using artificial neural networks (ANN) for indirect selection against early flowering in le
Bragantia. Publicado em: 21/08/2015
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24. Reaction norms models in the adjusted weight at 550 days of age for Polled Nellore cattle in Northeast Brazil
The objective of this study was to evaluate the genotype-environment interaction (GEI) in the body weight adjusted to 550 days of age (W550) of Polled Nellore cattle raised in Northeastern Brazil using reaction norms (RN) models. Hierarchical RN models included fixed effects for age of cow (linear and quadratic) and random effects for contemporary groups (CG
R. Bras. Zootec.. Publicado em: 2014-07