Efecto del ácido indolbutírico en la capacidad rizogénica de estacas de Eucryphia glutinosa
Efecto del ácido indolbutírico en la capacidad rizogénica de estacas de Eucryphia glutinosa
Authors
Latsague Vidal, Mirtha
Sáez Delgado, Patricia
Yáñez Delgado, Jéssica
Sáez Delgado, Patricia
Yáñez Delgado, Jéssica
Authors
Date
2011-08-08
Datos de publicación:
10.4067/S0717-92002009000200006
Keywords
Agronomía - Eucryphia glutinosa - Rizogénesis
Collections
Abstract
Eucryphia glutinosa es una especie endémica de Chile que actualmente se encuentra con problemas de conservación, siendo catalogada como especie rara. Su área de distribución y su contingente poblacional han disminuido considerablemente, por lo que aplicar protocolos de propagación resulta necesario para aumentar el número de individuos. Actualmente existe escasa información respecto a la reproducción vegetativa de esta especie. En consideración a esto, el objetivo del trabajo fue evaluar su capacidad reproductiva mediante rizogénesis de estacas. Se colectaron estacas en abril de 2007 en la Reserva Nacional Malleco, Región de La Araucanía. Las estacas fueron tratadas con ácido indolbutírico (AIB) durante 15 minutos en distintas concentraciones (0, 250, 500, 1.000 y 1.500 mg L–1). Después de mantener las estacas durante siete meses en cama caliente de arraigamiento, se evaluaron los porcentajes de sobrevivencia, de formación de callo y de enraizamiento. Además, se determinó el potencial de crecimiento radical (PCR). Se observó que los mejores resultados se produjeron en la concentración de 500 mg L–1 de AIB, con un 56,5% de enraizamiento.
Eucryphia glutinosa is an endemic species from Chile that at the present is with conservation problems, being catalogued as a rare species. Its distribution area and its population are decreasing considerably due to deforestation. The objective of the present work was to evaluate its reproductive capacity by means of cuttings rhizogenesis. Cuttings were collected during April 2007 in the National Malleco Reserve, Araucania Region. The harvested cuttings were treated with indole butyric acid (IBA) at different concentrations (0, 250, 500, 1,000 and 1,500 mg L–1) as rooting stimulator. After seven months in a hot bed a 30% of total rooting was obtained. The best results in respect of the process of rhizogenesis were shown by 500 mg L–1 IBA, with an average of 3 cm in root length and 12 roots by cutting, with a 56.5% of rooting.
Eucryphia glutinosa is an endemic species from Chile that at the present is with conservation problems, being catalogued as a rare species. Its distribution area and its population are decreasing considerably due to deforestation. The objective of the present work was to evaluate its reproductive capacity by means of cuttings rhizogenesis. Cuttings were collected during April 2007 in the National Malleco Reserve, Araucania Region. The harvested cuttings were treated with indole butyric acid (IBA) at different concentrations (0, 250, 500, 1,000 and 1,500 mg L–1) as rooting stimulator. After seven months in a hot bed a 30% of total rooting was obtained. The best results in respect of the process of rhizogenesis were shown by 500 mg L–1 IBA, with an average of 3 cm in root length and 12 roots by cutting, with a 56.5% of rooting.