Data/hora: 13/06/2024 13:58:22

Provedor de dados: | 2
País: | Brazil
Título: | Repeatability, number of harvests, and phenotypic stability of dry matter yield and quality traits of Panicum maximum jacq.
Autores: | Fernandes, Francisco Duarte; Braga, Gustavo José; Ramos, Allan Kardec Braga; Jank, Liana; Carvalho, Marcelo Ayres; Maciel, Giovana Alcântara; Karia, Claudio Takao; Fonseca, Carlos Eduardo Lazarini.
Data: | 2017-04-03
Ano: | 2017
Palavras-chave: | 4.3.3.3 - Melhoramento de Plantas Forrageiras e Produção de Sementes repeated measures; Selection efficiency; Selection effectiveness.
Resumo: | Selection of superior forage genotypes is based on agronomic traits assayed in repeated measures. The questions are how repeatable the performance of individual genotypes is and how many harvests are needed to select the best genotypes. The objectives were to estimate repeatability coefficients of dry matter yield (DMY) and forage quality, their phenotypic stability and the number of harvests needed for an accurate selection. Two randomized complete block design experiments data with 24 genotypes each, undergoing 12 and 16 harvests, over a period of 2 and 3 years, respectively, were used. The DMY repeatability estimates ranged from 0.42 to 0.55, suggesting a low heritability. The mean numbers of repeated measures were 5 and 7 harvests for 0.80 and 0.85 accuracy, respectively. The inclusion of the first two harvests negatively affects the estimates. Repeatability for quality traits ranged from 0.30 to 0.69, indicating low to moderate heritability.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês

Identificador:

http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/32915

10.4025/actascianimsci.v39i2.32915

Editor: | Editora da Universidade Estadual de Maringá

Relação:

http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/32915/pdf

http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/downloadSuppFile/32915/13184

Formato: | application/pdf

Fonte:

Acta Scientiarum. Animal Sciences; v. 39, n. 2 (2017); 149-155

Acta Scientiarum. Animal Sciences; v. 39, n. 2 (2017); 149-155

1807-8672

1806-2636

Fonte: | Direitos autorais 2017 Acta Scientiarum. Animal Sciences