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Analysis of the adaptability of black bean cultivars by means of quantile regression Ciência Rural
Barroso,Laís Mayara Azevedo; Nascimento,Moysés; Barili,Leiri Daiane; Nascimento,Ana Carolina Campana; Vale,Naine Martins do; Silva,Fabyano Fonseca e; Carneiro,José Eustáquio de Souza.
ABSTRACT: The aim of this study was to use quantile regression (QR) to characterize the effect of the adaptability parameter throughout the distribution of the productivity variable on black bean cultivars launched by different national research institutes (research centers) over the last 50 years. For this purpose, 40 cultivars developed by Brazilian genetic improvement programs between 1959 and 2013 were used. Initially, QR models were adjusted considering three quantiles (τ = 0.2, 0.5 and 0.8). Subsequently, with the confidence intervals, quantile models τ = 0.2 and 0.8 (QR0.2 and QR0.8) showed differences regarding the parameter of adaptability and average productivity. Finally, by grouping the cultivars into one of the two groups defined from QR0.2...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Gene-environment (GxE) interaction; Phaseolus vulgaris L; Genetic improvement; Quantiles; Regression models.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000300200
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Extreme events of precipitation in the rainy season of the state of Bahia. Repositório Alice
DOURADO, C. S.; AVILA, A. M. H. de; OLIVEIRA, S. R. de M..
Abstract: The increase of frequency and intensity of extreme precipitation events has generated consequences for biodiversity of natural systems, economic and life losses. In particular, the state of Bahia has been the scene of an increase of severe droughts in almost its entirety and outbreaks of floods that serve as a warning to the future. In this regard, the objective of this work was to analyze the frequency of occurrence of extreme events of precipitation between 1981 and 2010 of Bahia.
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Precipitação; Clusterização; Zonas pluviométricas; Quantis; Fenômenos extremos; Sistemas meteorológicos; Rainfall zones; Quantiles; Extreme phenomena; Weather systems; Rain; Cluster analysis; Weather.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/handle/doc/968932
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Visualizing Adaptation of Genotypes with a Ternary Plot Chilean J. Agric. Res.
Kozak,Marcin.
Adaptation can be studied through various methods, some of which are based on adaptation or stability measures while others on complex models and graphs. In this adaptation measure based on quantiles is presented; the measure is three-dimensional and can be pictured with a ternary (trilinear) plot. A simple algorithm for constructing such a plot is presented and the interpretation of the plot is discussed. By means of this graphical tool one can picture and interpret the specific and wide adaptation of genotypes to environments, offering complementary information to that of other methods of analyzing genotype-by-environment data.
Tipo: Journal article Palavras-chave: Adaptability; Wide and specific adaptation; Quantiles; Trilinear plot; Visualization.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000400010
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