Data/hora: 09/06/2024 11:11:01

Provedor de dados: | 74
País: | Brazil
Título: | Developing a common bean core collection suitable for association mapping studies
Autores: | Perseguini,Juliana Morini Küpper Cardoso; Silva,Gliciane Micaele Borges; Rosa,João Ricardo Bachega Feijó; Gazaffi,Rodrigo; Marçal,Jéssica Fernanda; Carbonell,Sérgio Augusto Morais; Chiorato,Alisson Fernando; Zucchi,Maria Imaculada; Garcia,Antonio Augusto Franco; Benchimol-Reis,Luciana Lasry.
Data: | 2015-03-01
Ano: | 2015
Palavras-chave: | Molecular markers; Genetic diversity; Genetic structure; Microsatellites; Phaseolus vulgaris L.
Resumo: | 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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572015000100067
Editor: | Sociedade Brasileira de Genética
Relação: | 10.1590/S1415-475738120140126
Formato: | text/html
Fonte: | Genetics and Molecular Biology  v.38 n.1 2015
Fonte: | info:eu-repo/semantics/openAccess