Tipo de luz y escarificación micropilar en la germinación de semillas de maracuyá Passiflora edulis var. flavicarpa
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Authors
Alva Obregón, Denfiger Manuel
Abstract
La presente investigación tuvo como objetivo determinar los efectos que ocurren de la interacción entre tipo de luz con la escarificación mecánica a nivel micropilar en el porcentaje de germinación de las semillas. Se instalaron seis tratamientos (con cuatro repeticiones cada uno) en base a los factores: tipo de luz (LED, fluorescente y oscuridad)y tipo de semilla (con y sin escarificación micropilar) mediante un arreglo factorial conducido bajo un diseño completamente al azar (DCA). Se emplearon semillas de frutosobtenidas de tres lugares distintos las cuales fueron extraídas las semillas para su posteriorsecado Dichos tratamientos fueron conducidos en cámaras de luz teniendo como unidad experimental 100 semillas mediante el método entre papel. Se realizaron entre 3 a 4 evaluaciones en un periodo de dos meses. Como pretratamiento se procedió con el pre- humedecimiento para estimular la germinación y superar la dormancia mecánica. Asimismo, se realizó la prueba de viabilidad para verificar el estado del embrión en las semillas que no lograron germinar. Los resultados obtenidos fueron determinados en baseal número de plántulas normales, es decir tomando como criterio la germinación agronómica. Este variable no presentó una correlación directa con el porcentaje de viabilidad. Es decir, grupo de semillas con alta viabilidad no presentaron necesariamentealtos porcentajes de germinación. Para el análisis estadístico de los datos se usaron el análisis de varianza (ANOVA) y la Prueba de comparación de medias de Duncan mediante los programas estadísticos Excel e InfoStat. Los resultados indican que las semillas escarificadas en luz tipo LED presentaron mayor germinación evidenciándose en un mayor número de plántulas normales por lo que la especie es fotoblástica positiva. Asimismo, la escarificación micropilar incrementó de manera significativa la germinación. Se concluye que existe interacción entre los factores de estudio mencionados.
The objective of this research was to determine the effect that occurs from the interaction between the type of light with mechanical scarification at the micropillar level on the germination percentage of passion fruit seeds with and without micropillar scarification (carried out on a group of seeds). Six treatments were installed (with four repetitions each) based on the factors: type of light (LED, fluorescent and dark) and type of seed (with and without micropillar scarification) through a factorial arrangement conducted under a completely randomized design (DCA). Fruit seeds obtained from three different places were used, which the seeds were extracted for later (INIA, Zapallal and Huamantanga supply center). Said drying Said treatments were conducted in light chambers with 100 seeds as experimental unit using the paper-to-paper method. Between 3 to 4 evaluations were carried out in a period of two months. As pretreatments, pre-wetting of the seeds was used, as well as micropillar scarification to stimulate germination and overcome mechanical dormancy. Likewise, the viability test was carried out to verify the state of the embryo in the seeds that failed to germinate. The results obtained were determined based on the number of normal seedlings, that is, taking agronomic germination as a criterion. This variable did not present a direct correlation with the percentage of viability.That is, a group of seeds with high viability did not necessarily present high germinationpercentages. For the statistical analysis of the data, analysis of variance (ANOVA) and Duncan's Mean Comparison Test were used using the Excel and InfoStat statistical programs. The results indicate that seeds scarified in LED-type light presented greater germination, evident in a greater number of normal seedlings, which is why the species is photoblastic positive. Likewise, micropillar scarification significantly increased germination. It is concluded that there is interaction between the aforementioned study factors. In that sense, the LED type stimulates greater germination, evident in a greater number of normal seedlings.
The objective of this research was to determine the effect that occurs from the interaction between the type of light with mechanical scarification at the micropillar level on the germination percentage of passion fruit seeds with and without micropillar scarification (carried out on a group of seeds). Six treatments were installed (with four repetitions each) based on the factors: type of light (LED, fluorescent and dark) and type of seed (with and without micropillar scarification) through a factorial arrangement conducted under a completely randomized design (DCA). Fruit seeds obtained from three different places were used, which the seeds were extracted for later (INIA, Zapallal and Huamantanga supply center). Said drying Said treatments were conducted in light chambers with 100 seeds as experimental unit using the paper-to-paper method. Between 3 to 4 evaluations were carried out in a period of two months. As pretreatments, pre-wetting of the seeds was used, as well as micropillar scarification to stimulate germination and overcome mechanical dormancy. Likewise, the viability test was carried out to verify the state of the embryo in the seeds that failed to germinate. The results obtained were determined based on the number of normal seedlings, that is, taking agronomic germination as a criterion. This variable did not present a direct correlation with the percentage of viability.That is, a group of seeds with high viability did not necessarily present high germinationpercentages. For the statistical analysis of the data, analysis of variance (ANOVA) and Duncan's Mean Comparison Test were used using the Excel and InfoStat statistical programs. The results indicate that seeds scarified in LED-type light presented greater germination, evident in a greater number of normal seedlings, which is why the species is photoblastic positive. Likewise, micropillar scarification significantly increased germination. It is concluded that there is interaction between the aforementioned study factors. In that sense, the LED type stimulates greater germination, evident in a greater number of normal seedlings.
Description
Universidad Nacional Agraria La Molina. Facultad de Agronomía. Departamento Académico de Fitotecnia
Keywords
Porcentaje de germinación
Citation
Date
2024
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