Data/hora: 03/06/2024 08:49:46

Provedor de dados: | Acta Scientiarum: Animal Sciences
País: | Brazil
Título: | Repeatability and phenotypic stabilization of Panicum maximum accessions
Autores: | 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.
Data: | 2015-02-06
Ano: | 2015
Palavras-chave: | 5.04.04.04-0 determination coefficients; Forages; Breeding.
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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês

Identificador:

http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/23206

10.4025/actascianimsci.v37i1.23206

Editor: | Editora da Universidade Estadual de Maringá
Relação: | http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/23206/pdf_65
Formato: | application/pdf

Fonte:

Acta Scientiarum. Animal Sciences; v. 37, n. 1 (2015); 15-21

Acta Scientiarum. Animal Sciences; v. 37, n. 1 (2015); 15-21

1807-8672

1806-2636