Data/hora: 02/06/2024 15:40:48

Provedor de dados: 	86	
País: 	Brazil	
Título: 	In situ and genetic characterization of Gossypium barbadense populations from the states of Pará and Amapá, Brazil	
Autores: 	Almeida,Vanessa Cavalcante de; Hoffmann,Lúcia Vieira; Yokomizo,Gilberto Ken It; Costa,Joaquim Nunes da; Giband,Marc; Barroso,Paulo Augusto Vianna.	
Data: 	2009-07-01	
Ano: 	2009	
Palavras-chave: 	Cotton; Genetic diversity; Germplasm; SSR markers.	
Resumo: 	The objective of this work was to characterize the populations of Gossypium barbadense in the states of Amapá and Pará, Brazil. In situ characterization was conducted through interviews with the owners of the plants and environmental observations. Leaf or petal tissue as well as seed samples were collected for genetic characterization by single sequence repeats markers and for storage in germplasm banks, respectively. The plants were maintained in dooryards and used mainly for medical purposes. The genetic analysis showed no heterozygous plants at the loci tested (f = 1), indicating that reproduction occurs mainly through selfing. The total genetic diversity was high (He = 0.39); and a high level of differentiation was observed between cotton plants from the two states (F ST = 0.36). Conventional methods of in situ maintenance of G. barbadense populations are not applicable. The conservation of the genetic variability of populations present in the two states could be achieved through germplasm collection and establishing of ex situ seed banks.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000700011	
Editor: 	Embrapa Secretaria de Pesquisa e Desenvolvimento

Pesquisa Agropecuária Brasileira	
Relação: 	10.1590/S0100-204X2009000700011	
Formato: 	text/html	
Fonte: 	Pesquisa Agropecuária Brasileira  v.44 n.7 2009	
Fonte: 	info:eu-repo/semantics/openAccess