| Registro completo |
| Provedor de dados: |
Animal Sciences
|
| 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
|
| Direitos: |
Direitos autorais 2017 Acta Scientiarum. Animal Sciences
|
