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1.
Rev. peru. biol. (Impr.) ; 26(2): 271-274, abr.-jun. 2019. ilus
Article in Spanish | LILACS-Express | LILACS | ID: biblio-1094379

ABSTRACT

Reportamos por primera vez la presencia de Epidendrum suinii Hágsater & Dodson (Orchidaceae, Epidendroideae) para Perú basada en colectas de la región San Martín (parte septentrional oriental del territorio peruano). Incluimos una clave que permite diferenciar las especies de Epidendrum del grupo Cuchibambae que habitan en Perú.


We report for the first time the presence of Epidendrum suinii Hágsater & Dodson (Orchidaceae, Epidendroideae)for Peru based on collections from the region of San Martin (northern eastern part of the Peruvian territory). We include a key to recognize the species of Epidendrum of Cuchibambae group that grow in Perú.

2.
Rev. colomb. biotecnol ; 11(1): 17-32, jul. 2009. ilus, tab, graf
Article in Spanish | LILACS | ID: lil-590628

ABSTRACT

El desarrollo vegetativo de los protocormos de Epidendrum elongatum Jacq., una orquídea endémica y en vías de extinción, se logró eficazmente mediante el cultivo in vitro en el medio Murashige y Skoog (1962), donde se evaluó el efecto de la interacción entre los siguientes tres factores: carbón activado (0,0; 0,5; 1,0% (w/v)); ácido indol acético (0,0; 0,5; 1,0 mg.L-1); bencil amino purina (0,0; 0,5; 1,0 mg.L-1). El medio de cultivo empleado fue enriquecido con sacarosa al 3%, y el Myo inositol al 0,1 g.L-1. En este estudio se evaluó que el efecto sobre la tasa de crecimiento de la interacción del carbón activado en concentraciones de 0,5 y 1,0% con 0,5 mg.L-1 de AIA es positivo para el desarrollo de los protocormos de E. elongatum bajo condiciones in vitro, mientras que la interacción del BAP, tanto en concentraciones de 0,5 mg.L-1 y 1,0 mg.L-1, muestra resultados no tan favorables en cuanto al grado de desarrollo de los protocormos estudiados. Este estudio describe un protocolo que permite alcanzar más de 270.000 plántulas en excelente desarrollo vegetativo dentro de 30 semanas, a partir de una cápsula de esta importante orquídea. Este protocolo es un modelo de conservación para especies que se encuentran en vías de extinción, y además permite la propagación a gran escala de Epidendrum elongatum.


The vegetative development of protocorm-like bodies (PLB) from Epidendrum elongatum Jacq. (an endemic and endangered orchid) was effectively achieved through in vitro culture in Murashige and Skoog medium (1962); the effect of the interaction between the following three factors was studied: activated charcoal (0.0, 0.5, 1.0% (w/v)), indol acetic acid (0.0, 0.5, 1.0 mg.L-1), benzylaminopurine (0.0, 0.5, 1.0 mg.L-1). The culture medium being gerused was enriched with 3% sucrose and 0.1 g.L-1 myo-inositol. This study revealed that the effect of 0.5% and 1.0% activated charcoal concentrations interacting with 0.5 mg.L-1 AIA on PBL growth rate was positive for E. elongatum PBL development in vitro conditions, whereas the interaction of BAP (at both 0.5 mg.L-1 and 1.0 mg.L-1 concentration) did not produce such favourable results regarding the degree of development of the PLB being studied. This study describes a protocol leading to more than 270,000 seedlings enjoying excellent vegetative growth being obtained within 30 weeks from a single capsule from this important orchid. This protocol represents a model for conserving endangered species and promotes large-scale Epidendrum elongatum propagation.


Subject(s)
Charcoal/analysis , Charcoal , Charcoal/pharmacology , Charcoal/toxicity
3.
Genet. mol. biol ; 32(2): 337-339, 2009. tab
Article in English | LILACS | ID: lil-513962

ABSTRACT

In this study we tested the cross-amplification of 33 microsatellite loci previously developed for two closely related Neotropical orchid genera (Epidendrum and Laelia). A set of ten loci were polymorphic across five examined species (20 individuals each) with 2 to 15 alleles per locus. The mean expected and observed heterozygosity (average across species) ranged from 0.34 to 0.82 and from 0.27 to 0.85, respectively. In addition we tested all loci in 35 species representative of the genus Epidendrum. Of these, 26 loci showed successful amplification. Cross-application of these loci represent a potential source of co-dominant markers for evolutionary, ecological and conservation studies in this important orchid genus.

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