Respuestas morfométricas de Quillaja saponaria a gradientes de concentraciones de extractos acuosos de Teline monspessulana.
Loading...
Date
2024
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Universidad de Concepción
Abstract
Este estudio examinó las interacciones alelopáticas entre la invasora Teline monspessulana, una fabácea invasora, y la especie nativa Quillaja saponaria de la zona Central de Chile, con el propósito de determinar las concentraciones mínimas de extractos de T. monspessulana que provocan alteraciones en el crecimiento inicial de Q. saponaria. Para esto, se llevaron a cabo experimentos en condiciones de laboratorio que simularon el ambiente natural donde se puede producir la interacción biótica interespecífica entre la fabácea invasora y la nativa. Se evaluaron variables morfométricas de la parte aérea y de la raíz de plántulas de Q. saponarias expuestas a un gradiente de concentraciones relativas de extractos acuosos de T. monspessulana (0%, 20%, 60%, 100%), y se utilizaron dos controles: sustrato nativo regado con agua, sustrato invadido regado con agua. El estudio reveló que a partir de la concentración del 20% el extracto acuoso de la fabácea invasora provocó inhibiciones significativas de la parte aérea de la planta y del sistema radicular. Esto finalmente se reflejó en menor producción de biomasa, por lo que se asume que también debió perjudicarse la efectividad del mecanismo fotosintético.
This study examined allelopathic interactions between the invader Teline monspessulana, an invasive legume, and the native species Quillaja saponaria from the Central zone of Chile, with the purpose of determining the minimum concentrations of T. monspessulana extracts that cause alterations in the initial growth of Q. saponaria. To achieve this, laboratory experiments were conducted simulating the natural environment where the biotic interspecific interaction between the invasive legume and the native species occurs. Morphometric variables of the aerial part and root of Q. saponaria seedlings exposed to a gradient of relative concentrations of aqueous extracts of T. monspessulana (0%, 20%, 60%, 100%) were evaluated, and two controls were used: native substrate watered with water, invaded substrate watered with water. The study revealed that starting from a concentration of 20%, the aqueous extract of the invasive legume causes significant inhibitions of both the aerial part of the plant and the root system. This ultimately results in lower biomass production, indicating that the effectiveness of the photosynthetic mechanism may also have been impaired.
This study examined allelopathic interactions between the invader Teline monspessulana, an invasive legume, and the native species Quillaja saponaria from the Central zone of Chile, with the purpose of determining the minimum concentrations of T. monspessulana extracts that cause alterations in the initial growth of Q. saponaria. To achieve this, laboratory experiments were conducted simulating the natural environment where the biotic interspecific interaction between the invasive legume and the native species occurs. Morphometric variables of the aerial part and root of Q. saponaria seedlings exposed to a gradient of relative concentrations of aqueous extracts of T. monspessulana (0%, 20%, 60%, 100%) were evaluated, and two controls were used: native substrate watered with water, invaded substrate watered with water. The study revealed that starting from a concentration of 20%, the aqueous extract of the invasive legume causes significant inhibitions of both the aerial part of the plant and the root system. This ultimately results in lower biomass production, indicating that the effectiveness of the photosynthetic mechanism may also have been impaired.
Description
Tesis presentada para optar al título profesional de Ingeniera en Biotecnología Vegetal
Keywords
Botánica, Adaptación (Biología), Quillay