Artículo

Resumen:

La fitorremediación está adquiriendo reconocimiento como método ambientalmente correcto, económico y estético de remediación de sitios contaminados. Estudiamos la respuesta de germinación y supervivencia de Tithonia tubaeformis a contaminantes derivados del petróleo. Realizamos un bioensayo analizando: contaminantes (gasoil: 0, 1.96%, 3.93%, aceite usado de auto: 0, 2.75%, 5.5%) y nutrientes (con y sin adición). Se encontraron diferencias en el porcentaje y la velocidad de germinación. El gasoil en ambas concentraciones fue el más tóxico. La concentración de HTP en el sustrato disminuyó (64% en los tratamientos con gasoil y 51% en los con aceite). Sería interesante realizar experiencias a campo, manejándose con cautela ya que, al ser invasora, su propagación sería un problema

Abstract:

Phytoremediation is an innovated technique, cheaper than traditional methods commonly used to decontaminate polluted soils. The objective of this work is to study the germination of T. tubaeformis and its survival responses to petroleum hydrocarbons. We carried out a bioassay using contaminated soil following a randomized factorial design and analyzing contaminants at three different concentrations (gas-oil: 0, 1.96% and 3.93%, car fuel-oil: 0, 2.75% and 5.5%) and nutrients conditions (with and without Rorison nutrient solution), with four replicates per treatment. HTP concentrations were assessed at the beginning and end of the experiment with the ASTM D1178 modified method. Significant differences were obtained in the percentage of germination and germination speed. No differences were found in the interaction nutrients*treatments for the percentages of germination and germination speed. There were no differences in the germination and germination speed in the control group and the fuel oil one (lowest concentration). Gas-oil at the lowest concentration allowed cotyledon emergence, while at the highest resulted in all seeds mortality. The concentration of TPH in the soil at the beginning and end of the experiment showed a greater reduction in the gas-oil treatments (64%) than in the fuel-oil ones (51%). We suggest further studies in contaminated open fields, though, being an alien species, precautions should be taken

Registro:

Documento:Publicación periódica
Título:Germinación y supervivencia del pasto cubano Tithonia tubaeformis (Asteraceae) en suelos contaminados con hidrocarburos de petróleo
Título alt:Germination and survival of Tithonia tubaeformis (Asteraceae) in soils containing petroleum hydrocarbon contaminants
Autor:Larenas Parada, Giovanna; De Viana, Marta Leonor
Fecha:2005-12
Titulo revista:Ecología Austral
Editor:Asociación Argentina de Ecología; Argentina.
Handle: http://hdl.handle.net/20.500.12110/ecologiaaustral_v015_n02_p177
Idioma:Español
Palabras clave:gasoil; aceite usado de autos; tolerancia; fitorremediación; invasora
keywords:gas-oil; used car oil; tolerance; phytoremediation; alien plant
Año:2005
Volumen:015
Número:02
Página de inicio:177
Página de fin:181
Formato:application/pdf
PDF:https://bibliotecadigital.exactas.uba.ar/download/ecologiaaustral/ecologiaaustral_v015_n02_p177.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/ecologiaaustral/document/ecologiaaustral_v015_n02_p177

Citas:

---------- APA ----------
Larenas Parada, G. & De Viana, M.L. (2005) . Germination and survival of Tithonia tubaeformis (Asteraceae) in soils containing petroleum hydrocarbon contaminants. Ecología Austral, 015 (02) , 177-181.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/ecologiaaustral/document/ecologiaaustral_v015_n02_p177 [ ]
---------- CHICAGO ----------
Larenas Parada, G., De Viana, M.L. "Germination and survival of Tithonia tubaeformis (Asteraceae) in soils containing petroleum hydrocarbon contaminants" . Ecología Austral 015, no. 02 (2005) : 177-181.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/ecologiaaustral/document/ecologiaaustral_v015_n02_p177 [ ]
---------- MLA ----------
Larenas Parada, G., De Viana, M.L. "Germination and survival of Tithonia tubaeformis (Asteraceae) in soils containing petroleum hydrocarbon contaminants" . Ecología Austral, vol. 015, no. 02, 2005, pp. 177-181.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/ecologiaaustral/document/ecologiaaustral_v015_n02_p177 [ ]
---------- VANCOUVER ----------
Larenas Parada, G., De Viana, M.L. Germination and survival of Tithonia tubaeformis (Asteraceae) in soils containing petroleum hydrocarbon contaminants. 2005;015(02):177-181.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/ecologiaaustral/document/ecologiaaustral_v015_n02_p177 [ ]