Data/hora: 13/06/2024 07:11:05

Provedor de dados: 	74	
País: 	Brazil	
Título: 	AFLP marker analysis revealing genetic structure of the tree Parapiptadenia rigida (Benth.) Brenan (Leguminosae-Mimosoideae) in the southern Brazilian Tropical Rainforest	
Autores: 	Souza,Laís Bérgamo de; Ruas,Eduardo A.; Rodrigues,Luana A.; Ruas,Claudete F.; Ruas,Paulo M.	
Data: 	2013-01-01	
Ano: 	2013	
Palavras-chave: 	Tropical tree; Genetic diversity; Population genetics; Conservation; AFLP.	
Resumo: 	Parapiptadenia rigida is a tropical early secondary succession tree characteristic of the Tropical Atlantic Rainforest. This species is of great ecological importance in the recovery of degraded areas. In this study we investigated the variability and population genetic structure of eight populations of P. rigida. Five AFLP primer combinations were used in a sample of 159 individuals representing these eight populations, rendering a total of 126 polymorphic fragments. The averages of percentage of polymorphic loci, gene diversity, and Shannon index were 60.45%, 0.217, and 0.322, respectively. A significant correlation between the population genetic variability and the population sizes was observed. The genetic variability within populations (72.20%) was higher than between these (22.80%). No perfect correlation was observed between geographic and genetic distances, which might be explained by differences in deforestation intensities that occurred in these areas. A dendrogram constructed by the UPGMA method revealed the formation of two clusters, these also confirmed by Bayesian analysis for the number of K cluster. These results show that it is necessary to develop urgent management strategies for the conservation of certain populations of P. rigida, while other populations still preserve reasonably high levels of genetic variability.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572013000400012	
Editor: 	Sociedade Brasileira de Genética	
Relação: 	10.1590/S1415-47572013005000036	
Formato: 	text/html	
Fonte: 	Genetics and Molecular Biology  v.36 n.4 2013	
Fonte: 	info:eu-repo/semantics/openAccess