Establishment of propagation methods for growing promisingaromatic plant species of the lippia (verbenaceae) andtagetes (asteraceae) genera in colombia Report as inadecuate




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The objective of this study was to evaluate methods of asexual propagation with stem cuttings in the aromatic plant species Lippia origanoides accessions CA-90 and CA-93, Lippia alba accession CA-300 and Tagetes zypaquirensis accession CA-247 and determine the germination behavior of Tagetes caracasana accession CA-10, in order to contribute to the establishment of these promising aromatics as potential new crops in Colombia. The factors evaluated were the substrate fine coconut fiber FCF; fine coconut fiber: coal slag 1:1 FCFCS; fine coconut fiber: coal slag: river sand 1:1:1 FCFC- SRS and IBA hormone concentration 0, 2,000 and 4,000 mg L-1. Germination tests of seeds of the accession CA-10 were carried out in Petri dishes with 50 seeds per dish, with three replicates in controlled conditions and constant temperature 25oC, humidity 90% and total darkness. In general, the accessions CA-90, CA-93, CA-300 and CA-247 showed better rooting percentage, root length, number of roots and root dry weight in the fine coconut fiber substrate and a higher number of roots with an exogenous application of 2,000 mg L-1 IBA. L. alba and T. zypaquirensis responded better than L. origanoides to the treatments. The latter species showed a relatively poor performance and may require more complex and improved propagation methods to obtain more satisfactor y results. T. caracasana seeds had a relatively short germination time less than three weeks and relatively high germination under controlled laboratory and greenhouse conditions 70 and 60%, respectively; these percentages are high relative to wild species of the same genus, meaning this method of seed propagation is appropriate for this wild species.

Tipo de documento: Artículo - Article

Información adicional: © Facultad de Agronomía, Universidad Nacional de Colombia Se autoriza la reproducción y citación del material que aparece en la revista, siempre y cuando se indique de manera explícita: nombre de la revista, nombre del autores, año, volumen, número y páginas del artículo fuente. Las ideas y afirmaciones consignadas por los autores están bajo su responsabilidad y no interpretan necesariamente las opiniones y políticas de la Universidad Nacional de Colombia. La mención de productos o firmas comerciales en la revista no implica una recomendación o apoyo por parte de la Universidad ni de la Facultad; el uso de tales productos debe ceñirse a las recomendaciones de las etiquetas.

Palabras clave: indolebutyric acid IBA, auxins, seed germination, vegetative propagation, cuttings.





Source: http://www.bdigital.unal.edu.co


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Establishment of propagation methods for growing promising aromatic plant species of the Lippia (Verbenaceae) and Tagetes (Asteraceae) genera in Colombia Establecimiento de métodos de propagación para el cultivo de especies vegetales aromáticas promisorias en Colombia de los géneros Lippia (Verbenaceae) y Tagetes (Asteraceae) Axel Mauricio Herrera-Moreno1, Carlos Edwin Carranza1, and María Isabel Chacón-Sánchez1 ABSTRACT RESUMEN The objective of this study was to evaluate methods of asexual propagation with stem cuttings in the aromatic plant species Lippia origanoides (accessions CA-90 and CA-93), Lippia alba (accession CA-300) and Tagetes zypaquirensis (accession CA-247) and determine the germination behavior of Tagetes caracasana (accession CA-10), in order to contribute to the establishment of these promising aromatics as potential new crops in Colombia.
The factors evaluated were the substrate (fine coconut fiber (FCF); fine coconut fiber: coal slag 1:1 (FCFCS); fine coconut fiber: coal slag: river sand 1:1:1 (FCFCSRS) and IBA hormone concentration (0, 2,000 and 4,000 mg L-1).
Germination tests of seeds of the accession CA-10 were carried out in Petri dishes with 50 seeds per dish, with three replicates in controlled conditions and constant temperature (25oC), humidity (90%) and total darkness.
In general, the accessions CA-90, CA-93, CA-300 and CA-247 showed better rooting percentage, root length, number of roots and root dry weight in the fine coconut fiber substrate and a higher number of roots with an exogenous application of 2,000 mg L-1 IBA.
L. alba and T.
zypaquirensis responded better than L.
origanoides to the treatments.
The latter species showed a relatively poor performance and may require more complex and improved propagation methods to obtain more satisfactory results. T.
caracasana seeds had a relatively short germination time (less than three weeks) and relatively high germination under controlled laboratory and greenhouse conditions (...






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