Evaluación de cinco tratamientos pregerminativos a tres niveles de luminosidad en la producción de guarango (Caesalpinia spinosa), en el Vivero del Centro Experimental, Académico Salache, 2021

The present investigation was carried out in the Nursery of the Experimental Center, Academic Salache of the Faculty of Agricultural Sciences and Natural Resources of the Technical University of Cotopaxi, where its main objective is to evaluate the behavior of the seed when applying pregerminative treatments and levels of luminosity, to break the natural latency. To achieve the objectives, guarango seeds were used applied with five pregerminative treatments including the control and 3 levels of luminosity with stable substrate. In a design: Complete Random Blocks (DBCA) in factorial arrangement of 5 x 3 x 2 repetitions, and an ADEVA Analysis of Variance. A 5% Tukey test was carried out to compare averages of Factor A pregerminative treatments: chemical, mechanical, physical and traditional method, Factor B level of luminosity: polisombra 100%, 50% and 0%. And the interaction A x B. Where the variables were measured: Germination percentage (PG) (20, 30 and 50 days); Plant height (AP) (20 and 50 days); Number of leaves (NH) (30 and 60 days). Once the statistical analysis had been carried out, it was possible to determine that the best pregerminative treatment (FA) was the seeds subjected to the mechanical method (scarification with sandpaper), with a germination percentage of 50%, 46.67% and 71.67% where it showed significance and high significance; in the variable plant height at 50 days the (scarification with sandpaper) obtained 4.13 cm and for the variable number of leaves at 30 and 60 days the mechanical method (scarification with sandpaper) stands out with 9 and 14 leaves respectively . Regarding the level of luminosity (FB), the polisombra at 50% was the most viable with a germination percentage at 30 and 50 days with 37% and 55% being statistically significant. The A x B interaction highlights T5 (A2B2) the best treatment in this research, which presented 60% and 95% germination at 30 and 50 days, reflecting significance and high significance, compared to the control that presented 15% and 35% germination. In other words, the evaluated factors did have a statistical difference, to accelerate the germination process from 1 to 2 months with a germination of 98%, so the null hypothesis is rejected and the alternative hypothesis is accepted.

• Main Author: Robayo Carrillo, Alex Geovanny (author)
• Format: bachelorThesis
• Language: spa
• Published: 2021
• Subjects: TRATAMIENTOS PREGERMINATIVOS; NIVELES DE LUMINOSIDAD; PRODUCCIÓN DE GUARANGO; MEDIO AMBIENTE
• Online Access: http://repositorio.utc.edu.ec/handle/27000/7828