Concentración y método de aplicación de selenio en plántulas de pimiento



Palabras clave:

selenito de sodio, raíz, foliar, cultivo sin suelo


El selenio (Se) es considerado un elemento benéfico para las plantas; sin embargo, concentraciones elevadas pueden causar trastornos fisiológicos y morfológicos. El objetivo del estudio, fue identificar la concentración y método de aplicación de Se que permita la obtención de plántulas de calidad en cultivo de pimiento, por ello, se establecieron dos experimentos bajo condiciones de invernadero cultivados en solución nutritiva. En el experimento 1, para aplicación radical, se cultivaron plántulas en solución nutritiva enriquecida con Se en forma de Na3SeO4 en concentraciones de: 0.0, 1.0, 2.5, 5.0 y 10.0 μM. En el experimento 2, para aplicación foliar, las plántulas se asperjaron con Se en forma de Na3SeO4 en concentraciones de 0, 5, 10, 25 y 50 μM. En cada experimento se utilizó un diseño experimental completamente al azar con cinco repeticiones por tratamiento. El suministro de 1 y 5 μM de Se mediante aplicación radical y foliar respectivamente, estimularon el crecimiento de las plántulas de pimiento, asimismo, la presencia de Se en ambos métodos de aplicación, aumentó la concentración de pigmentos fotosintéticos en hojas. El Se mejoró la calidad de las plántulas, al inducir respuestas favorables en el crecimiento y concentración de pigmentos fotosintéticos.


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