Data/hora: 09/06/2024 17:03:41

Biblioteca(s): 	Embrapa Arroz e Feijão.	
Data corrente: 	19/08/2005	
Data da última atualização: 	06/10/2005	
Autoria: 	POMPELLI, M. F.; GUERRA, M. P.	
Título: 	Micropropagation enables the mass propagation and conservation of Dyckia distachya Hassler.	
Ano de publicação: 	2005	
Fonte/Imprenta: 	Crop Breeding and Applied Biotechnology, Viçosa, MG, v. 5, n. 1, p. 117-123, Mar. 2005.	
Idioma: 	Inglês	
Conteúdo: 	The Atlantic Forest has a rich biological diversity and elevated levels of endemism in which bromeliads are frequent, but endangered. Tissue culture techniques raise high hopes for the rescue, mass propagation for commercial aims or the conservation of natural populations threatened with extinction. The present study evaluated aspects of seed-based D. distachya micropropagation. A high rate of in vitro regeneration (78.93 shoot gram-1) was obtained in response to liquid MS culture medium supplemented with benzyladenine (BA) at 2 mM after 120 days in culture, or supplemented with NAA at 2 mM, BA at 4 mM and paclobutrazol at 6 mM (133.58 shoots explant-1) after 142 days in culture. Not less than 1.5-cm-long shoots were successfully acclimatized to ex vitro conditions. D. distachya is responsive to the application of tissue culture techniques for mass propagation and conservation purposes. The use of seeds as initial explants allows the maintenance of the genetic diversity observed in the natural populations and mass regeneration is a promising technique for the conservation of this endangered bromeliad.
	
Palavras-Chave: 	Bromeliads; Bromélias; Cultura de tecidos; Dyckia Distackya Hassler.	
Thesagro: 	Micropropagação; Organogénese.	
Thesaurus Nal: 	micropropagation; organogenesis; tissue culture.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Arroz e Feijão (CNPAF)	
Exemplares: 	CNPAF - (22897-1) - ADD - AP - -- - 631.05 - C - 2005.00370 - DIS