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Type: Artigo
Title: Developing a common bean core collection suitable for association mapping studies
Author: Kuepper Cardoso Perseguini, Juliana Morini
Borges Silva, Gliciane Micaele
Bachega Feijo Rosa, Joao Ricardo
Gazaffi, Rodrigo
Marcal, Jessica Fernanda
Morais Carbonell, Sergio Augusto
Chiorato, Alisson Fernando
Zucchi, Maria Imaculada
Franco Garcia, Antonio Augusto
Benchimol-Reis, Luciana Lasry
Abstract: Because of the continuous introduction of germplasm from abroad, some collections have a high number of accessions, making it difficult to explore the genetic variability present in a germplasm bank for conservation and breeding purposes. Therefore, the aim of this study was to quantify and analyze the structure of genetic variability among 500 common bean accessions to construct a core collection. A total of 58 SSRs were used for this purpose. The polymorphism information content (PIC) in the 180 common bean accessions selected to compose the core collection ranged from 0.17 to 0.86, and the discriminatory power (DP) ranged from 0.21 to 0.90. The 500 accessions were clustered into 15 distinct groups and the 180 accessions into four distinct groups in the Structure analysis. According to analysis of molecular variance, the most divergent accessions comprised 97.2% of the observed genetic variability present within the base collection, confirming the efficiency of the selection criterion. The 180 selected accessions will be used for association mapping in future studies and could be potentially used by breeders to direct new crosses and generate elite cultivars that meet current and future global market needs
Subject: Variação genética
Marcadores moleculares
Country: Brasil
Editor: Sociedade Brasileira de Genética
Rights: Aberto
Identifier DOI: 10.1590/S1415-475738120140126
Date Issue: 2015
Appears in Collections:IB - Artigos e Outros Documentos

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