Optimal Period of Rooting of Superior Clones of Gmelina arborea Roxb
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| Autores: | , , , |
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| Formato: | artículo original |
| Estado: | Versión publicada |
| Fecha de Publicación: | 2017 |
| Descripción: | Despite cloning with cuttings of Gmelina arborea is relatively simple, a clonal production protocol with scientific criteria is lacking. The protocol is needed to improve production and reduce rooting times, to avoid the emergence of plagues and illnesses, and reduce costs of reforestation in general. Therefore, the optimal period for rooting cuttings of superior clones of Gmelina arborea in rooting tunnels was assessed during this investigation. We worked with four rooting periods of 9, 12, 15 and 18 days, respectively, and they were evaluated by using cuttings with different diameter of the clones 5, 6 and 9. After the rooting process, some variables, such as length, diameter, rooting percentage, final height and total green and dry biomass of plants, were evaluated. The statistical analyses applied tests of means, analysis of variance, and logistic models. On average, 98% of plants rooted, and the treatment obtained 100% of rooting in 15 days. However, no significant differences were found; the diameter was significant in the rooting period. The average height in plants showed significant differences at 15 days: a highest growth, 3.82 in (9.71 cm), was reported, and after this period it decreased by 7%. The 15 day treatment reported a total increase of dry biomass; only this one showed a statistical difference with the 18 day treatment. The period of 12 to 15 days for rooting presented a dry-root weight increase of 55.3%. No significant differences in the percentage between clones for rooting and plant height were generated; however, the total biomass showed differences with the clone 9, being the highest average (0.27 g). The rooting period for 15 days positively influenced the vegetative propagation of clones of melina. |
| País: | Portal de Revistas UNA |
| Institución: | Universidad Nacional de Costa Rica |
| Repositorio: | Portal de Revistas UNA |
| Lenguaje: | Español |
| OAI Identifier: | oai:ojs.www.una.ac.cr:article/9256 |
| Acceso en línea: | https://www.revistas.una.ac.cr/index.php/ambientales/article/view/9256 |
| Palabra clave: | Biomasa verde clon diámetro esqueje Gmelina arborea Green biomass clone diameter cutting |