Data/hora: 11/06/2024 01:02:22

Provedor de dados: 	74	
País: 	Brazil	
Título: 	Development of a Brazilian maize core collection	
Autores: 	Coimbra,Ronaldo R.; Miranda,Glauco V.; Cruz,Cosme D.; Silva,Derly J.H.; Vilela,Ramiro A.	
Data: 	2009-01-01	
Ano: 	2009	
Palavras-chave: 	Germplasm collection; Zea mays; Breeding; Landraces; Selection.	
Resumo: 	The aim of this study was to evaluate methods for developing a Brazilian maize core collection. For an initial survey of the active collection, passport information, as well as characterization and evaluation of accessions, were taken into consideration, these then being divided according to geographic region and kernel-type. Multiple sampling methods were evaluated. The strategy of constant sampling generated extensive alterations in extract accession frequency. The multivariate strategy with dispersion graphs and principal components associated with the Tocher method was considered efficient for identifying the most divergent genotypes. The multivariate strategy generated greater alterations in the variance of traits. The average number of traits revealed few modifications with the various sampling strategies used. Therefore, the active collection could be considered as possessing a satisfactory amount of information for most of its accessions. Moreover, the multivariate strategy generated modifications in the variance of the traits, independent of sampling intensity.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000300017	
Editor: 	Sociedade Brasileira de Genética	
Relação: 	10.1590/S1415-47572009005000059	
Formato: 	text/html	
Fonte: 	Genetics and Molecular Biology  v.32 n.3 2009	
Fonte: 	info:eu-repo/semantics/openAccess