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Registros recuperados : 77 | |
Registros recuperados : 77 | |
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Registro Completo
Biblioteca(s): |
Embrapa Unidades Centrais. |
Data corrente: |
03/05/2005 |
Data da última atualização: |
03/08/2018 |
Autoria: |
DUARTE, J. B.; VENCOVSKY, R. |
Afiliação: |
João Batista Duarte, Universidade Federal de Goiás - UFG/Escola de Agronomia e Engenharia de Alimentos; Roland Vencovsky, Universidade de São Paulo - Usp/Escola Superior de Agricultura “Luiz de Queiroz” - Esalq/Departamento de Genética. |
Título: |
Spatial statistical analysis and selection of genotypes in plant breeding. |
Ano de publicação: |
2005 |
Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 40, n. 2, p. 107-114, fev. 2005 |
Idioma: |
Inglês |
Notas: |
Título em português: Seleção de genótipos e análise estatística espacial no melhoramento de plantas. |
Conteúdo: |
The objective of this study was to evaluate the efficiency of spatial statistical analysis in the selection of genotypes in a plant breeding program and, particularly, to demonstrate the benefits of the approach when experimental observations are not spatially independent. The basic material of this study was a yield trial of soybean lines, with five check varieties (of fixed effect) and 110 test lines (of random effects), in an augmented block design. The spatial analysis used a random field linear model (RFML), with a covariance function estimated from the residuals of the analysis considering independent errors. Results showed a residual autocorrelation of significant magnitude and extension (range), which allowed a better discrimination among genotypes (increase of the power of statistical tests, reduction in the standard errors of estimates and predictors, and a greater amplitude of predictor values) when the spatial analysis was applied. Furthermore, the spatial analysis led to a different ranking of the genetic materials, in comparison with the non-spatial analysis, and a selection less influenced by local variation effects was obtained. |
Palavras-Chave: |
augmented design; autocorrelação; correlated data; dados correlacionados; delineamento aumentado; geoestatística; information recovery; mixed model; modelo misto; recuperação de informação. |
Thesaurus NAL: |
autocorrelation; geostatistics. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/107908/1/Spatial.pdf
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Marc: |
LEADER 02107naa a2200289 a 4500 001 1113848 005 2018-08-03 008 2005 bl uuuu u00u1 u #d 100 1 $aDUARTE, J. B. 245 $aSpatial statistical analysis and selection of genotypes in plant breeding. 260 $c2005 500 $aTítulo em português: Seleção de genótipos e análise estatística espacial no melhoramento de plantas. 520 $aThe objective of this study was to evaluate the efficiency of spatial statistical analysis in the selection of genotypes in a plant breeding program and, particularly, to demonstrate the benefits of the approach when experimental observations are not spatially independent. The basic material of this study was a yield trial of soybean lines, with five check varieties (of fixed effect) and 110 test lines (of random effects), in an augmented block design. The spatial analysis used a random field linear model (RFML), with a covariance function estimated from the residuals of the analysis considering independent errors. Results showed a residual autocorrelation of significant magnitude and extension (range), which allowed a better discrimination among genotypes (increase of the power of statistical tests, reduction in the standard errors of estimates and predictors, and a greater amplitude of predictor values) when the spatial analysis was applied. Furthermore, the spatial analysis led to a different ranking of the genetic materials, in comparison with the non-spatial analysis, and a selection less influenced by local variation effects was obtained. 650 $aautocorrelation 650 $ageostatistics 653 $aaugmented design 653 $aautocorrelação 653 $acorrelated data 653 $adados correlacionados 653 $adelineamento aumentado 653 $ageoestatística 653 $ainformation recovery 653 $amixed model 653 $amodelo misto 653 $arecuperação de informação 700 1 $aVENCOVSKY, R. 773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 40, n. 2, p. 107-114, fev. 2005
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Embrapa Unidades Centrais (AI-SEDE) |
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