Repeatability and phenotypic stabilization of Panicum maximum accessions
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Acta Scientiarum. Animal Sciences (Online) |
Texto Completo: | https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/23206 |
Resumo: | The experiment aimed at determining repeatability coefficients for four methods (analysis of variance, principal components-correlation and covariance matrices and structural analysis), number of harvests necessary to increase accuracy and phenotypic stability of yield characteristics of accessions of Panicum maximum. The experiment was conducted in a completely randomized design with 35 genotypes and three replications. Five cuts were made and material was weighed and dried to obtain total, stem, leaf and dead forage dry matter yields. The repeatability coefficients in the different methods, for the evaluated characteristics, ranged from 0.1867 and 0.6583. The estimates of repeatability coefficients obtained for the evaluated characteristics by analysis of variance were generally smaller than the ones obtained with the other methods. By the principal components (based on the covariance matrix), the estimates were usually larger than those for the other methods. Therefore, it is possible to recommend this method to estimate the coefficient of repeatability for traits evaluated in this study.Considering that levels of 80 or 90% of confidence in the evaluation of the relative superiority of the accessions for all the evaluated characteristics are satisfactory, five harvests are sufficient for the choice of the best accession. |
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Acta Scientiarum. Animal Sciences (Online) |
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Repeatability and phenotypic stabilization of Panicum maximum accessionsdetermination coefficientsforagesbreedingThe experiment aimed at determining repeatability coefficients for four methods (analysis of variance, principal components-correlation and covariance matrices and structural analysis), number of harvests necessary to increase accuracy and phenotypic stability of yield characteristics of accessions of Panicum maximum. The experiment was conducted in a completely randomized design with 35 genotypes and three replications. Five cuts were made and material was weighed and dried to obtain total, stem, leaf and dead forage dry matter yields. The repeatability coefficients in the different methods, for the evaluated characteristics, ranged from 0.1867 and 0.6583. The estimates of repeatability coefficients obtained for the evaluated characteristics by analysis of variance were generally smaller than the ones obtained with the other methods. By the principal components (based on the covariance matrix), the estimates were usually larger than those for the other methods. Therefore, it is possible to recommend this method to estimate the coefficient of repeatability for traits evaluated in this study.Considering that levels of 80 or 90% of confidence in the evaluation of the relative superiority of the accessions for all the evaluated characteristics are satisfactory, five harvests are sufficient for the choice of the best accession. Editora da Universidade Estadual de Maringá2015-02-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa de campoapplication/pdfhttps://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/2320610.4025/actascianimsci.v37i1.23206Acta Scientiarum. Animal Sciences; Vol 37 No 1 (2015); 15-21Acta Scientiarum. Animal Sciences; v. 37 n. 1 (2015); 15-211807-86721806-2636reponame:Acta Scientiarum. Animal Sciences (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMenghttps://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/23206/pdf_65Martuscello, Janaina AzevedoBraz, Thiago Gomes dos SantosJank, LianaCunha, Daniel de Noronha F. V. daLima, Bruno Patrick da SilvaOliveira, Leandro Pereira deinfo:eu-repo/semantics/openAccess2015-04-23T11:19:34Zoai:periodicos.uem.br/ojs:article/23206Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciAnimSciPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAnimSci/oaiactaanim@uem.br||actaanim@uem.br|| rev.acta@gmail.com1807-86721806-2636opendoar:2015-04-23T11:19:34Acta Scientiarum. Animal Sciences (Online) - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Repeatability and phenotypic stabilization of Panicum maximum accessions |
title |
Repeatability and phenotypic stabilization of Panicum maximum accessions |
spellingShingle |
Repeatability and phenotypic stabilization of Panicum maximum accessions Martuscello, Janaina Azevedo determination coefficients forages breeding |
title_short |
Repeatability and phenotypic stabilization of Panicum maximum accessions |
title_full |
Repeatability and phenotypic stabilization of Panicum maximum accessions |
title_fullStr |
Repeatability and phenotypic stabilization of Panicum maximum accessions |
title_full_unstemmed |
Repeatability and phenotypic stabilization of Panicum maximum accessions |
title_sort |
Repeatability and phenotypic stabilization of Panicum maximum accessions |
author |
Martuscello, Janaina Azevedo |
author_facet |
Martuscello, Janaina Azevedo Braz, Thiago Gomes dos Santos Jank, Liana Cunha, Daniel de Noronha F. V. da Lima, Bruno Patrick da Silva Oliveira, Leandro Pereira de |
author_role |
author |
author2 |
Braz, Thiago Gomes dos Santos Jank, Liana Cunha, Daniel de Noronha F. V. da Lima, Bruno Patrick da Silva Oliveira, Leandro Pereira de |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Martuscello, Janaina Azevedo Braz, Thiago Gomes dos Santos Jank, Liana Cunha, Daniel de Noronha F. V. da Lima, Bruno Patrick da Silva Oliveira, Leandro Pereira de |
dc.subject.por.fl_str_mv |
determination coefficients forages breeding |
topic |
determination coefficients forages breeding |
description |
The experiment aimed at determining repeatability coefficients for four methods (analysis of variance, principal components-correlation and covariance matrices and structural analysis), number of harvests necessary to increase accuracy and phenotypic stability of yield characteristics of accessions of Panicum maximum. The experiment was conducted in a completely randomized design with 35 genotypes and three replications. Five cuts were made and material was weighed and dried to obtain total, stem, leaf and dead forage dry matter yields. The repeatability coefficients in the different methods, for the evaluated characteristics, ranged from 0.1867 and 0.6583. The estimates of repeatability coefficients obtained for the evaluated characteristics by analysis of variance were generally smaller than the ones obtained with the other methods. By the principal components (based on the covariance matrix), the estimates were usually larger than those for the other methods. Therefore, it is possible to recommend this method to estimate the coefficient of repeatability for traits evaluated in this study.Considering that levels of 80 or 90% of confidence in the evaluation of the relative superiority of the accessions for all the evaluated characteristics are satisfactory, five harvests are sufficient for the choice of the best accession. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-02-06 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Pesquisa de campo |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/23206 10.4025/actascianimsci.v37i1.23206 |
url |
https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/23206 |
identifier_str_mv |
10.4025/actascianimsci.v37i1.23206 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/23206/pdf_65 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Editora da Universidade Estadual de Maringá |
publisher.none.fl_str_mv |
Editora da Universidade Estadual de Maringá |
dc.source.none.fl_str_mv |
Acta Scientiarum. Animal Sciences; Vol 37 No 1 (2015); 15-21 Acta Scientiarum. Animal Sciences; v. 37 n. 1 (2015); 15-21 1807-8672 1806-2636 reponame:Acta Scientiarum. Animal Sciences (Online) instname:Universidade Estadual de Maringá (UEM) instacron:UEM |
instname_str |
Universidade Estadual de Maringá (UEM) |
instacron_str |
UEM |
institution |
UEM |
reponame_str |
Acta Scientiarum. Animal Sciences (Online) |
collection |
Acta Scientiarum. Animal Sciences (Online) |
repository.name.fl_str_mv |
Acta Scientiarum. Animal Sciences (Online) - Universidade Estadual de Maringá (UEM) |
repository.mail.fl_str_mv |
actaanim@uem.br||actaanim@uem.br|| rev.acta@gmail.com |
_version_ |
1799315361222361088 |