Inclusion of genetic relationship information in the pedigree selection method using mixed models
We used a mixed model approach and computer simulation to evaluate the inclusion of parentage information as determined by the genealogy established in the pedigree method. The simulations were based on a purely additive genetic model for one quantitative trait of 20 unlinked segregating loci with e...
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Sociedade Brasileira de Genética
2008-01-01
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doaj-d05fc02bb88a42808e13b53053753c552020-11-25T01:10:55ZengSociedade Brasileira de GenéticaGenetics and Molecular Biology1415-47571678-46852008-01-01311737810.1590/S1415-47572008000100015Inclusion of genetic relationship information in the pedigree selection method using mixed modelsJosé Airton Rodrigues NunesMagno Antonio Patto RamalhoDaniel Furtado FerreiraWe used a mixed model approach and computer simulation to evaluate the inclusion of parentage information as determined by the genealogy established in the pedigree method. The simulations were based on a purely additive genetic model for one quantitative trait of 20 unlinked segregating loci with equal effects and an allelic frequency of 0.5 for heritability values of 10%, 25%, 50% and 75% for selection based on an F4:5 progeny mean. We simulated 1000 experiments for each heritability value, corresponding to the evaluation of 256 F4:5 progenies. The phenotypic values of the progenies were analyzed according to two models, one ignoring and one considering the additive genetic parentage among the progenies. The additive relationship coefficients among F4:5 progenies ranged from 0.0 to 1.75. The evaluated selection procedures were the phenotypic progeny mean (M) and the best linear unbiased predictor including parentage (BLUP A). The inclusion of parentage among progenies using the BLUP A procedure resulted in higher selection gains than when the relationship information was ignored, which possibly recompenses the additional work invested to obtain these records, above all in the case of low - heritability traits.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000100015autogamous cropsBLUPcomputer simulationplant breeding |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
José Airton Rodrigues Nunes Magno Antonio Patto Ramalho Daniel Furtado Ferreira |
spellingShingle |
José Airton Rodrigues Nunes Magno Antonio Patto Ramalho Daniel Furtado Ferreira Inclusion of genetic relationship information in the pedigree selection method using mixed models Genetics and Molecular Biology autogamous crops BLUP computer simulation plant breeding |
author_facet |
José Airton Rodrigues Nunes Magno Antonio Patto Ramalho Daniel Furtado Ferreira |
author_sort |
José Airton Rodrigues Nunes |
title |
Inclusion of genetic relationship information in the pedigree selection method using mixed models |
title_short |
Inclusion of genetic relationship information in the pedigree selection method using mixed models |
title_full |
Inclusion of genetic relationship information in the pedigree selection method using mixed models |
title_fullStr |
Inclusion of genetic relationship information in the pedigree selection method using mixed models |
title_full_unstemmed |
Inclusion of genetic relationship information in the pedigree selection method using mixed models |
title_sort |
inclusion of genetic relationship information in the pedigree selection method using mixed models |
publisher |
Sociedade Brasileira de Genética |
series |
Genetics and Molecular Biology |
issn |
1415-4757 1678-4685 |
publishDate |
2008-01-01 |
description |
We used a mixed model approach and computer simulation to evaluate the inclusion of parentage information as determined by the genealogy established in the pedigree method. The simulations were based on a purely additive genetic model for one quantitative trait of 20 unlinked segregating loci with equal effects and an allelic frequency of 0.5 for heritability values of 10%, 25%, 50% and 75% for selection based on an F4:5 progeny mean. We simulated 1000 experiments for each heritability value, corresponding to the evaluation of 256 F4:5 progenies. The phenotypic values of the progenies were analyzed according to two models, one ignoring and one considering the additive genetic parentage among the progenies. The additive relationship coefficients among F4:5 progenies ranged from 0.0 to 1.75. The evaluated selection procedures were the phenotypic progeny mean (M) and the best linear unbiased predictor including parentage (BLUP A). The inclusion of parentage among progenies using the BLUP A procedure resulted in higher selection gains than when the relationship information was ignored, which possibly recompenses the additional work invested to obtain these records, above all in the case of low - heritability traits. |
topic |
autogamous crops BLUP computer simulation plant breeding |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000100015 |
work_keys_str_mv |
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