Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/44121
Type: Artigo de periódico
Title: Using genetic diversity information to establish core collections of Stylosanthes capitata and Stylosanthes macrocephala
Author: 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
Abstract: 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.
Subject: Stylosanthes
tropical forage
microsatellites
genetic diversity
core collection
Editor: Sociedade Brasileira de Genética
Rights: aberto
Identifier DOI: 10.1590/S1415-47572012005000076
Address: http://dx.doi.org/10.1590/S1415-47572012005000076
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000500020
Date Issue: 1-Jan-2012
Appears in Collections:Unicamp - Artigos e Outros Documentos

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