Por favor, use este identificador para citar o enlazar este ítem:
http://dspace.udla.edu.ec/handle/33000/8507| Tipo de material : | bachelorThesis |
| Título : | Evaluación de la fijación de nitrógeno y su influencia en el crecimiento foliar y radicular de rosa spp. mediante la interacción de la bacteria nitrificante azospirillum spp. |
| Autor : | Marin Dett, Freddy Humberto |
| Tutor : | Tapia López, Wilson David |
| Palabras clave : | PROCESOS BIOQUÍMICOS;FIJACIÓN DEL NITRÓGENO;ROSAS;NITRIFICACIÓN |
| Fecha de publicación : | 2017 |
| Editorial : | Quito: Universidad de las Américas, 2017 |
| Citación : | Marin Dett, F. H. (2017). Evaluación de la fijación de nitrógeno y su influencia en el crecimiento foliar y radicular de rosa spp. mediante la interacción de la bacteria nitrificante azospirillum spp (Tesis de pregrado). Universidad de las Américas, Quito. |
| Resumen : | La bacteria nitrificante Azospirillum spp. ha sido muy estudiada debido a varias características que la clasifican como una rizobacteria promotora del crecimiento vegetal (PGPR), entre las cuales la más importante es la de fijación de nitrógeno, mediante la reducción de nitrógeno ambiental a nitrato y amonio... |
| Descripción : | The nitrifying bacterium Azospirillum spp. has been well studied due to several characteristics that classify it as a plant growth promoting rhizobacteria (PGPR), among which the most important is nitrogen fixation, through the reduction of environmental nitrogen to nitrate and ammonium. This study proposes to use the bacterium to improve the initial development of rose patterns, due to the importance of this crop in Ecuador. For this, 4 concentrations of the bacterium were established: 101, 106, 109 and 1012 CFU, and were compared with a control which consisted of chemical fertilization and a control without nitrogen. The study had 5 replicates of each treatment and 3 biological replicates. The inoculation of Azospirillum spp. was carried out with a commercial strain, by weekly application to the crop, taking the chemical fertilization as control and under greenhouse conditions. At the end of the experiment it was observed that the E treatment (1012 UFC), in the variables dry weight of root and aerial part of the pattern; (1.39 g and 8.23 g, respectively), and in the differential of the root size and the aerial part of the pattern, (3.87 cm and 18.42 cm, respectively) were the largest records that were generated, which conform to the exposed trend in several studies. In the variables ammonium and nitrate in the soil, treatment D resulted in the highest concentration (374 and 11.62 ppm, respectively), which is relevant because a higher concentration was obtained in comparison to studies already performed. In the analysis of foliar N, treatment D obtained the highest registry (3.19%), with which we can corroborate the cited in the bibliography; that the bacteria have a nitrogen fixing activity and that also helps a better absorption of nutrients, so that the treatments with the bacteria generated the best results in the variables studied in the present investigation. |
| URI : | http://dspace.udla.edu.ec/handle/33000/8507 |
| Aparece en las colecciones: | Ingeniería en Biotecnología |
Ficheros en este ítem:
| Fichero | Descripción | Tamaño | Formato | |
|---|---|---|---|---|
| UDLA-EC-TIB-2017-50.pdf | 2,36 MB | Adobe PDF | Visualizar/Abrir |
Este ítem está sujeto a una licencia Creative Commons Licencia Creative Commons
