Criterios de selección para el rendimiento en pepino (Cucumis sativus) cultivado en invernadero en época seca
Fecha
2021
Tipo
artículo original
Autores
Monge Pérez, José Eladio
Chacón Padilla, Karla
Loría Coto, Michelle
Título de la revista
ISSN de la revista
Título del volumen
Editor
Resumen
Introducción: El pepino es una hortaliza
importante en Costa Rica, y los criterios de selección de
rendimiento se estudian mejor mediante el análisis de
coeficiente de sendero, que divide los coeficientes de
correlación en componentes de efectos directos e
indirectos. Objetivo: Obtener un análisis de sendero para
el rendimiento del pepino en invernadero. Métodos: El
cultivo se manejó con fertirrigación, en sustrato de fibra
de coco, entre enero y mayo 2015. Se evaluaron siete
variables. Resultados: Se obtuvo una correlación positiva
y altamente significativa entre el rendimiento y el número
de frutos por planta (r=0,39**). El principal efecto directo
positivo sobre el rendimiento fue ejercido por número de
frutos por planta (coeficiente de sendero-CS=1,75),
seguido por peso del fruto (CS=1,44), diámetro del fruto
(CS=0,17) y longitud del fruto (CS=0,06), mientras que los
máximos efectos indirectos positivos sobre el rendimiento
fueron ejercidos por longitud del fruto (CS=1,31),
diámetro del fruto (CS=0,95) y porcentaje de sólidos
solubles totales (CS=0,89) a través de peso del fruto. Por
otra parte, la única variable que ejerció un efecto directo
negativo sobre el rendimiento fue porcentaje de sólidos
solubles totales (CS=-0,01). Conclusiones: En estas
condiciones, número de frutos por planta y peso del fruto
fueron las variables principales que contribuyeron con el
rendimiento.
Introduction: Cucumber is among Costa Rica’s main vegetable crop, and selection criteria for yield are best studied by path coefficient analysis, which divides correlation coefficients into direct and indirect effect components. Objective: To obtain a path analysis for greenhouse cucumber yield. Methods: The crop was planted on coconut fiber as substrate, and managed with fertigation, from January to May 2015. Seven variables were evaluated. Results: Yield showed a positive and highly significant correlation with number of fruits per plant (r=0,39**). The main positive direct effects on yield were exhibited by number of fruits per plant (path coefficient-PC=1,75), fruit weight (PC=1,44), fruit diameter (PC=0,17) and fruit length (PC=0,06), while maximum positive indirect effects on yield were exhibited by fruit length (PC=1,31), fruit diameter (PC=0,95) and percentage of total soluble solids (PC=0,89) through fruit weight. On the other hand, the only negative direct effect on yield was exhibited by percentage of total soluble solids (PC=-0,01). Conclusions: Under these conditions, number of fruits per plant and fruit weight were the main yield contributing variables.
Introduction: Cucumber is among Costa Rica’s main vegetable crop, and selection criteria for yield are best studied by path coefficient analysis, which divides correlation coefficients into direct and indirect effect components. Objective: To obtain a path analysis for greenhouse cucumber yield. Methods: The crop was planted on coconut fiber as substrate, and managed with fertigation, from January to May 2015. Seven variables were evaluated. Results: Yield showed a positive and highly significant correlation with number of fruits per plant (r=0,39**). The main positive direct effects on yield were exhibited by number of fruits per plant (path coefficient-PC=1,75), fruit weight (PC=1,44), fruit diameter (PC=0,17) and fruit length (PC=0,06), while maximum positive indirect effects on yield were exhibited by fruit length (PC=1,31), fruit diameter (PC=0,95) and percentage of total soluble solids (PC=0,89) through fruit weight. On the other hand, the only negative direct effect on yield was exhibited by percentage of total soluble solids (PC=-0,01). Conclusions: Under these conditions, number of fruits per plant and fruit weight were the main yield contributing variables.
Descripción
Palabras clave
Correlación de Pearson, Análisis de sendero, Rendimiento, Número de frutos por planta, Peso del fruto, Partenocárpico