Estimation of variances of the effects of incomplete diallels using a matrix approach
Autor(a) principal: | |
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Data de Publicação: | 2004 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S1415-47572004000300017 http://hdl.handle.net/11449/67992 |
Resumo: | A matrix approach is described for assessing the variance of effects in incomplete diallels designs. The method is illustrated by reference to simulated complete and incomplete diallels using different combinations of constraints, average degree of dominance and, for the incomplete diallel, number of hybrids. Our results showed that caution should be taken in working with incomplete diallels under conditions of overdominance because there were changes in the rank of the genotypes when the excluded hybrid had parents with a low frequency of the favorable allele (i.e. the allele which increases expression of a character). The expression described in this paper is a rapid and safe approach to estimate variances and covariances of the effects of contrasts of incomplete diallels. Copyright by the Brazilian Society of Genetics. |
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Repositório Institucional da UNESP |
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Estimation of variances of the effects of incomplete diallels using a matrix approachGeneral combining abilityIncomplete diallelSpecific combining abilityalleleanalysis of covarianceanalysis of varianceanalytic methodanalytical parametersbreeding methodcontrolled studycross breedingdiallel analysisgene expressiongenotypeprocess modelstatistical analysisA matrix approach is described for assessing the variance of effects in incomplete diallels designs. The method is illustrated by reference to simulated complete and incomplete diallels using different combinations of constraints, average degree of dominance and, for the incomplete diallel, number of hybrids. Our results showed that caution should be taken in working with incomplete diallels under conditions of overdominance because there were changes in the rank of the genotypes when the excluded hybrid had parents with a low frequency of the favorable allele (i.e. the allele which increases expression of a character). The expression described in this paper is a rapid and safe approach to estimate variances and covariances of the effects of contrasts of incomplete diallels. Copyright by the Brazilian Society of Genetics.Universidade Federal de Viçosa Departamento de Zootecnia, Av. P.H. Rolphs, 36571-000 Viçosa, MGUniversidade Estadual Paulista Júlio de Mesquita Filho Unidade Diferenciada de Dracena Faculdade de Zootecnia, Dracena, SPUniversidade Federal de Viçosa Departamento de Biologia Geral, Av. P.H. Rolphs, 36571-000 Viçosa, MGUniversidade Estadual Paulista Júlio de Mesquita Filho Unidade Diferenciada de Dracena Faculdade de Zootecnia, Dracena, SPUniversidade Federal de Viçosa (UFV)Universidade Estadual Paulista (Unesp)de Assis, Giselle Mariano Lessada Fonseca, Ricardo [UNESP]Cruz, Cosme DamiãoCarneiro Jr., José Marques2014-05-27T11:21:12Z2014-05-27T11:21:12Z2004-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article409-417application/pdfhttp://dx.doi.org/10.1590/S1415-47572004000300017Genetics and Molecular Biology, v. 27, n. 3, p. 409-417, 2004.1415-47571678-4685http://hdl.handle.net/11449/6799210.1590/S1415-47572004000300017S1415-47572004000300017WOS:0002309626000172-s2.0-306444640792-s2.0-30644464079.pdf03083523735455580000-0002-1163-6296Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengGenetics and Molecular Biology1.4930,638info:eu-repo/semantics/openAccess2024-05-07T13:47:37Zoai:repositorio.unesp.br:11449/67992Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:11:21.829310Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Estimation of variances of the effects of incomplete diallels using a matrix approach |
title |
Estimation of variances of the effects of incomplete diallels using a matrix approach |
spellingShingle |
Estimation of variances of the effects of incomplete diallels using a matrix approach de Assis, Giselle Mariano Lessa General combining ability Incomplete diallel Specific combining ability allele analysis of covariance analysis of variance analytic method analytical parameters breeding method controlled study cross breeding diallel analysis gene expression genotype process model statistical analysis |
title_short |
Estimation of variances of the effects of incomplete diallels using a matrix approach |
title_full |
Estimation of variances of the effects of incomplete diallels using a matrix approach |
title_fullStr |
Estimation of variances of the effects of incomplete diallels using a matrix approach |
title_full_unstemmed |
Estimation of variances of the effects of incomplete diallels using a matrix approach |
title_sort |
Estimation of variances of the effects of incomplete diallels using a matrix approach |
author |
de Assis, Giselle Mariano Lessa |
author_facet |
de Assis, Giselle Mariano Lessa da Fonseca, Ricardo [UNESP] Cruz, Cosme Damião Carneiro Jr., José Marques |
author_role |
author |
author2 |
da Fonseca, Ricardo [UNESP] Cruz, Cosme Damião Carneiro Jr., José Marques |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal de Viçosa (UFV) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
de Assis, Giselle Mariano Lessa da Fonseca, Ricardo [UNESP] Cruz, Cosme Damião Carneiro Jr., José Marques |
dc.subject.por.fl_str_mv |
General combining ability Incomplete diallel Specific combining ability allele analysis of covariance analysis of variance analytic method analytical parameters breeding method controlled study cross breeding diallel analysis gene expression genotype process model statistical analysis |
topic |
General combining ability Incomplete diallel Specific combining ability allele analysis of covariance analysis of variance analytic method analytical parameters breeding method controlled study cross breeding diallel analysis gene expression genotype process model statistical analysis |
description |
A matrix approach is described for assessing the variance of effects in incomplete diallels designs. The method is illustrated by reference to simulated complete and incomplete diallels using different combinations of constraints, average degree of dominance and, for the incomplete diallel, number of hybrids. Our results showed that caution should be taken in working with incomplete diallels under conditions of overdominance because there were changes in the rank of the genotypes when the excluded hybrid had parents with a low frequency of the favorable allele (i.e. the allele which increases expression of a character). The expression described in this paper is a rapid and safe approach to estimate variances and covariances of the effects of contrasts of incomplete diallels. Copyright by the Brazilian Society of Genetics. |
publishDate |
2004 |
dc.date.none.fl_str_mv |
2004-12-01 2014-05-27T11:21:12Z 2014-05-27T11:21:12Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/S1415-47572004000300017 Genetics and Molecular Biology, v. 27, n. 3, p. 409-417, 2004. 1415-4757 1678-4685 http://hdl.handle.net/11449/67992 10.1590/S1415-47572004000300017 S1415-47572004000300017 WOS:000230962600017 2-s2.0-30644464079 2-s2.0-30644464079.pdf 0308352373545558 0000-0002-1163-6296 |
url |
http://dx.doi.org/10.1590/S1415-47572004000300017 http://hdl.handle.net/11449/67992 |
identifier_str_mv |
Genetics and Molecular Biology, v. 27, n. 3, p. 409-417, 2004. 1415-4757 1678-4685 10.1590/S1415-47572004000300017 S1415-47572004000300017 WOS:000230962600017 2-s2.0-30644464079 2-s2.0-30644464079.pdf 0308352373545558 0000-0002-1163-6296 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Genetics and Molecular Biology 1.493 0,638 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
409-417 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129296209805312 |