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| Crevelari,Jocarla Ambrosim; Durães,Nayara Norrene Lacerda; Santos,Paulo Ricardo dos; Azevedo,Flávio Henrique Vidal; Bendia,Laila Cecília Ramos; Preisigke,Sandra da Costa; Gonçalves,Gabriel Moreno Bernardo; Ferreira Junior,José Arantes; Pereira,Messias Gonzaga. |
| ABSTRACT The aim of this study is to assess whether there is linear dependence between groups of morphoagronomic and bromatological traits in hybrid silage corn. Nineteen topcross hybrids and five checks were assessed in two different environments in Campos dos Goytacazes and Itaocara counties, Rio de Janeiro State, during the growing seasons 2013/2014. The study followed a randomized blocks design with four replicates. The phenotypic and canonical correlations between the groups of seven morphoagronomic and five bromatological traits were assessed. There is linear dependence between the group pairs of morphoagronomic, and bromatological variables. The morphoagronomic trait green mass yield can be adopted in indirect selection processes to indicate the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays L.; Topcross; Tester; Multicollinearity. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000300337 |
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| Crevelari,Jocarla Ambrosim; Durães,Nayara Norrene Lacerda; Bendia,Laila Cecília Ramos; Vettorazzi,Julio Cesar Fiorio; Entringer,Geovana Cremonini; Ferreira Júnior,José Arantes; Pereira,Messias Gonzaga. |
| ABSTRACT The aim of the current study is to estimate the correlation coefficients and the consequence of genotypic correlations on direct and indirect effects through path analysis between agronomic traits of maize hybrids used for silage production. Eight (8) topcross hybrids and seven (7) checks were analyzed in completely randomized blocks, with six replications, in two environments: Campos do Goytacazes and Itaocara counties – Rio de Janeiro State, in the crop year 2015/2016. The following agronomic traits were assessed: plant height, first ear height, culm diameter, number of ears, ear yield with straw at silage maturity, ear yield without straw at silage maturity, grain yield at silage maturity, grains ratio in the fresh matter and fresh matter... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays L.; Topcross; Tester; Multicollinearity. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000200243 |
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| Paris, Quirino. |
| Multicollinearity hampers empirical econometrics. The remedies proposed to date suffer from pitfalls of their own. The ridge estimator is not generally accepted as a vital alternative to the ordinary least-squares (OLS) estimator because it depends upon unknown parameters. The generalized maximum entropy (GME) estimator of Golan, Judge and Miller depends upon subjective exogenous information that affects the estimated parameters in an unpredictable way. This paper presents novel maximum entropy estimators inspired by the theory of light that do not depend upon any additional information. Monte Carlo experiments show that they are not affected by any level of multicollinearity and dominate OLS uniformly. The Leuven estimators are consistent and... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Multicollinearity; Mean squared error; Ordinary least squares; Generalized maximum entropy; Research Methods/ Statistical Methods; C2. |
| Ano: 2001 |
URL: http://purl.umn.edu/11991 |
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| Donazzolo,Joel; Salla,Vanessa Padilha; Sasso,Simone Aparecida Zolet; Danner,Moeses Andrigo; Citadin,Idemir; Nodari,Rubens Onofre. |
| ABSTRACT: The objective of this paper was to identify the direct and indirect effects of feijoa fruits (Acca sellowiana) traitson pulp weight, in order to use these traits in indirect genotypes selection. Fruits of five feijoa plants were collected in Rio Grande do Sul, in the years of 2009, 2010 and 2011. Six traits were evaluated: diameter, length, total weight, pulp weight, peel thickness and number of seeds per fruit. In the path analysis, with or without ridge regression, pulp weight was considered as the basic variable, and the other traits were considered as explanatory variables. Total weight and fruit diameter had high direct effect, and are the main traits associated with pulp weight. These traits may serve as criteria for indirect selection to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acca sellowiana; Multicollinearity; Ridge path analysis; Indirect selection. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000600203 |
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| Lopes,Jader Silva; Rorato,Paulo Roberto Nogara; Weber,Tomás; Araújo,Ronyere Olegário de; Dornelles,Mariana de Almeida; Comin,Juliana Grigolleto. |
| This work aimed at estimating the genetic effects that affect the pre-weaning performance of animals from multibreed crosses. In order to do so, it was used information of the weight at weaning of 79,521 animals, sired by 1,020 bulls and 61,898 cows from Aberdeen Angus and Nellore breeds and from many genetic groups resulted from their crosses. Five genetic models were tested: model 1, containing the fixed breed genetic effects (additive direct and maternal effects, heterozygote direct and maternal effects, epystatic direct and maternal effects, joint additive direct and maternal effects); model 2, equal to model 1, excluding direct and maternal joint additive effects; model 3, equal to model 1, excluding direct and maternal epystatic effects; model 4,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Additive effect; Complementarity among breeds; Epistasis; Heterozygous; Multicollinearity; Weaning weight. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001100014 |
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