Data/hora: 06/06/2024 01:35:51

Provedor de dados: 	96	
País: 	Brazil	
Título: 	Genotypic stabilization of agronomic traits in Panicum maximum (Jacq.) hybrids	
Autores: 	Braz,Thiago Gomes dos Santos; Fonseca,Dilermando Miranda da; Jank,Liana; Cruz,Cosme Damião; Martuscello,Janaina Azevedo.	
Data: 	2015-11-01	
Ano: 	2015	
Palavras-chave: 	Coefficient of determination; Forage; Repeated measures; Selection efficiency.	
Resumo: 	The objective of this study was to evaluate the genotypic stability of agronomic traits in hybrids of Panicum maximum. Hybrids originating from the crosses between two sexual parents and cultivars Mombasa and Tanzania were evaluated in an incomplete-block design. Evaluated traits were total dry matter, leaf dry matter, stem dry matter, percentage of leaves, and leaf:stem ratio. These traits were evaluated in six harvests. Overall, higher repeatability was observed for the traits total dry matter and leaf dry matter, especially when harvests 4, 5, and 6, occurring in spring and summer, were evaluated. The leaf dry matter was the trait that provided the greatest repeatability and determination. The repeatability of stem dry matter, percentage of leaves, and leaf:stem ratio had a low magnitude, even when the coefficient was estimated based on the harvests of better stabilization for the other variables. The hybrids achieved genotypic stabilization in the harvests made in the second rainy season. Harvests made in the rainy season provide greater repeatability and determination, and the inclusion of the dry-season harvest is detrimental to the process of selection of low-repeatability traits such as percentage of leaves.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982015001100377	
Editor: 	Sociedade Brasileira de Zootecnia	
Relação: 	10.1590/S1806-92902015001100001	
Formato: 	text/html	
Fonte: 	Revista Brasileira de Zootecnia  v.44 n.11 2015	
Fonte: 	info:eu-repo/semantics/openAccess