Data/hora: 10/06/2024 18:41:47

Provedor de dados: 	74	
País: 	Brazil	
Título: 	Genetic diversity in cultivated carioca common beans based on molecular marker analysis	
Autores: 	Perseguini,Juliana Morini Küpper Cardoso; Chioratto,Alisson Fernando; Zucchi,Maria Imaculada; Colombo,Carlos Augusto; Carbonell,Sérgio Augusto Moraes; Mondego,Jorge Mauricio Costa; Gazaffi,Rodrigo; Garcia,Antonio Augusto Franco; Campos,Tatiana de; Souza,Anete Pereira de; Rubiano,Luciana Benchimol.	
Data: 	2011-01-01	
Ano: 	2011	
Palavras-chave: 	AFLPs; Genetic structure; Genetic variability; Phaseolus vulgaris L.; SSRs.	
Resumo: 	A wide array of molecular markers has been used to investigate the genetic diversity among common bean species. However, the best combination of markers for studying such diversity among common bean cultivars has yet to be determined. Few reports have examined the genetic diversity of the carioca bean, commercially one of the most important common beans in Brazil. In this study, we examined the usefulness of two molecular marker systems (simple sequence repeats - SSRs and amplified fragment length polymorphisms - AFLPs) for assessing the genetic diversity of carioca beans. The amount of information provided by Roger's modified genetic distance was used to analyze SSR data and Jaccards similarity coefficient was used for AFLP data. Seventy SSRs were polymorphic and 20 AFLP primer combinations produced 635 polymorphic bands. Molecular analysis showed that carioca genotypes were quite diverse. AFLPs revealed greater genetic differentiation and variation within the carioca genotypes (Gst = 98% and Fst = 0.83, respectively) than SSRs and provided better resolution for clustering the carioca genotypes. SSRs and AFLPs were both suitable for assessing the genetic diversity of Brazilian carioca genotypes since the number of markers used in each system provided a low coefficient of variation. However, fingerprint profiles were generated faster with AFLPs, making them a better choice for assessing genetic diversity in the carioca germplasm.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000100017	
Editor: 	Sociedade Brasileira de Genética	
Relação: 	10.1590/S1415-47572011000100017	
Formato: 	text/html	
Fonte: 	Genetics and Molecular Biology  v.34 n.1 2011	
Fonte: 	info:eu-repo/semantics/openAccess