Data/hora: 10/06/2024 06:20:55

Provedor de dados: 	74	
País: 	Brazil	
Título: 	Using genetic diversity information to establish core collections of Stylosanthes capitata and Stylosanthes macrocephala	
Autores: 	Santos-Garcia,Melissa Oliveira; Toledo-Silva,Guilherme de; Sassaki,Rodrigo Possidonio; Ferreira,Thais Helena; Resende,Rosângela Maria Simeão; Chiari,Lucimara; Karia,Cláudio Takao; Carvalho,Marcelo Ayres; Faleiro,Fábio Gelape; Zucchi,Maria Imaculada; Souza,Anete Pereira de.	
Data: 	2012-01-01	
Ano: 	2012	
Palavras-chave: 	Stylosanthes; Tropical forage; Microsatellites; Genetic diversity; Core collection.	
Resumo: 	Stylosanthes species are important forage legumes in tropical and subtropical areas. S. macrocephala and S. capitata germplasm collections that consist of 134 and 192 accessions, respectively, are maintained at the Brazilian Agricultural Research Corporation Cerrados (Embrapa-Cerrados). Polymorphic microsatellite markers were used to assess genetic diversity and population structure with the aim to assemble a core collection. The mean values of H O and H E for S. macrocephala were 0.08 and 0.36, respectively, whereas the means for S. capitata were 0.48 and 0.50, respectively. Roger's genetic distance varied from 0 to 0.83 for S. macrocephala and from 0 to 0.85 for S. capitata. Analysis with STRUCTURE software distinguished five groups among the S. macrocephala accessions and four groups among those of S. capitata. Nei's genetic diversity was 27% in S. macrocephala and 11% in S. capitata. Core collections were assembled for both species. For S. macrocephala, all of the allelic diversity was represented by 23 accessions, whereas only 13 accessions were necessary to represent all allelic diversity for S. capitata. The data presented herein evidence the population structure present in the Embrapa-Cerrados germplasm collections of S. macrocephala and S. capitata, which may be useful for breeding programs and germplasm conservation.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000500020	
Editor: 	Sociedade Brasileira de Genética	
Relação: 	10.1590/S1415-47572012005000076	
Formato: 	text/html	
Fonte: 	Genetics and Molecular Biology  v.35 n.4 2012	
Fonte: 	info:eu-repo/semantics/openAccess