Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/200312
Type: Artigo de periódico
Title: Using Genetic Diversity Information To Establish Core Collections Of Stylosanthes Capitata And Stylosanthes Macrocephala.
Author: Santos-Garcia, Melissa Oliveira
de Toledo-Silva, Guilherme
Sassaki, Rodrigo Possidonio
Ferreira, Thais Helena
Resende, Rosângela Maria Simeão
Chiari, Lucimara
Karia, Cláudio Takao
Carvalho, Marcelo Ayres
Faleiro, Fábio Gelape
Zucchi, Maria Imaculada
de Souza, Anete Pereira
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
Core Collection
Genetic Diversity
Microsatellites
Tropical Forage
Rights: aberto
Identifier DOI: 10.1590/S1415-47572012005000076
Address: http://www.ncbi.nlm.nih.gov/pubmed/23271947
Date Issue: 2012
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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