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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Using genetic diversity information to establish core collections of Stylosanthes capitata and Stylosanthes macrocephala

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Santos-Garcia, Melissa Oliveira [1] ; de Toledo-Silva, Guilherme [1] ; Sassaki, Rodrigo Possidonio [1] ; Ferreira, Thais Helena [1] ; Simeao Resende, Rosangela Maria ; Chiari, Lucimara ; Karia, Claudio Takao ; Carvalho, Marcelo Ayres ; Faleiro, Fabio Gelape ; Zucchi, Maria Imaculada ; de Souza, Anete Pereira [2, 1]
Total Authors: 11
Affiliation:
[1] Univ Estadual Campinas, Ctr Biol Mol & Engn Genet, BR-13083970 Campinas, SP - Brazil
[2] Univ Estadual Campinas, Inst Biol, Dept Biol Vegetal, BR-13083970 Campinas, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: GENETICS AND MOLECULAR BIOLOGY; v. 35, n. 4, p. 847-861, DEC 2012.
Web of Science Citations: 8
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. (AU)