Data/hora: 07/06/2024 02:37:36

Provedor de dados: 	52	
País: 	Brazil	
Título: 	Comparative anatomy of the absorption roots of terrestrial and epiphytic orchids	
Autores: 	Moreira,Ana Sílvia Franco Pinheiro; Isaias,Rosy Mary dos Santos.	
Data: 	2008-02-01	
Ano: 	2008	
Palavras-chave: 	Orchids; Terrestrial; Epiphytic; Anatomy; Adaptations.	
Resumo: 	The present study compared roots of terrestrial and epiphytic Orchidaceae, analyzing the anatomical characteristics from an ecological point of view. The material was collected at three different sites in Minas Gerais / Brazil and was fixed in FAA. Transverse sections were obtained by freehand sections or from material previously embedded in Paraplast® or Historesin®. The prominent characteristics of the epiphytic group were: significant smaller perimeter, epidermis with 3 or more cell layers, U-thickened exodermal cell walls, O-thickened endodermal cell walls, and a low ratio between the caliber and the number of protoxylem arches. The terrestrial group presented simple or multiseriate epidermis, and exodermis and endodermis with typical Casparian strips. The anatomical characteristics should have evolved with several adaptations to distinct environments during evolutionary process.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000100011	
Editor: 	Instituto de Tecnologia do Paraná - Tecpar	
Relação: 	10.1590/S1516-89132008000100011	
Formato: 	text/html	
Fonte: 	Brazilian Archives of Biology and Technology  v.51 n.1 2008	
Fonte: 	info:eu-repo/semantics/openAccess