Influencia de sustratos producidos por tres fabáceas invasoras sobre el crecimiento inicial de especies olerícolas.
Loading...
Date
2024
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Universidad de Concepción
Abstract
Las especies invasoras representan una amenaza para los ecosistemas, y su propagación puede tener impactos significativos en la biodiversidad y la producción de alimentos. En este estudio, se investigaron los efectos de los sustratos producidos por tres fabáceas invasoras, Acacia dealbata, Ulex europaeus y Teline monspessulana, en el crecimiento y desarrollo inicial de especies olerícolas de interés alimentario. Se recolectaron sustratos debajo del dosel de cada especie invasora y se utilizaron para llenar bandejas en las que se sembraron semillas de lechuga, tomate, rábano y cebolla. Se evaluaron variables morfométricas como longitud de la planta, número de hojas verdaderas, longitud de la raíz principal, número de raíces secundarias y porcentaje de masa seca. Los resultados mostraron que los sustratos producidos por las fabáceas invasoras provocaron efectos negativos y positivos en las especies olerícolas. Se observó una reducción en el potencial germinativo, y un menor crecimiento y desarrollo de las plantas en comparación con el sustrato control en algunos casos. Estos efectos podrían tener implicaciones en la producción de plántulas de hortalizas y en los cultivos establecidos en caso de utilizarse los mencionados sustratos. Los resultados revelaron que probablemente, en los sustratos permanecen aleloquímicos por un periodo de tiempo posterior a ser recolectados debajo del dosel de las plantas donantes.
Invasive species pose a threat to ecosystems, and their spread can have significant impacts on biodiversity and food production. This study investigated the effects of substrates produced by three invasive leguminous plants, namely Acacia dealbata, Ulex europaeus, and Teline monspessulana, on the growth and initial development of vegetable species of food interest. Substrates were collected beneath the canopy of each invasive species and used to fill trays in which seeds of lettuce, tomato, radish, and onion were planted. Morphometric variables, such as plant length, number of true leaves, main root length, number of secondary roots, and percentage of dry mass, were evaluated. The results showed that the substrates produced by the leguminous invasive plants had both negative and positive effects on the vegetable species. A reduction in germination potential, as well as decreased plant growth and development compared to the control substrate, were observed in some cases. These effects could have implications for vegetable seedling production and established crops if these substrates are used. The findings reveal that allelochemicals persist in the substrates for a period after being collected beneath the canopy of the donor plants. It would be advisable to subject the substrates to a sunlight exposure process to enhance microbial dynamics and either consume or transform the persistent allelochemicals in the substrates. This would allow their use without the possibility of significant inhibitory risks in the recipient plants.
Invasive species pose a threat to ecosystems, and their spread can have significant impacts on biodiversity and food production. This study investigated the effects of substrates produced by three invasive leguminous plants, namely Acacia dealbata, Ulex europaeus, and Teline monspessulana, on the growth and initial development of vegetable species of food interest. Substrates were collected beneath the canopy of each invasive species and used to fill trays in which seeds of lettuce, tomato, radish, and onion were planted. Morphometric variables, such as plant length, number of true leaves, main root length, number of secondary roots, and percentage of dry mass, were evaluated. The results showed that the substrates produced by the leguminous invasive plants had both negative and positive effects on the vegetable species. A reduction in germination potential, as well as decreased plant growth and development compared to the control substrate, were observed in some cases. These effects could have implications for vegetable seedling production and established crops if these substrates are used. The findings reveal that allelochemicals persist in the substrates for a period after being collected beneath the canopy of the donor plants. It would be advisable to subject the substrates to a sunlight exposure process to enhance microbial dynamics and either consume or transform the persistent allelochemicals in the substrates. This would allow their use without the possibility of significant inhibitory risks in the recipient plants.
Description
Tesis presentada para optar al título profesional de Ingeniera en Biotecnología Vegetal
Keywords
Aleloquímicos, Hortalizas