Evaluación de la severidad de la roya (Phakopsora pachyrhizi) y su influencia en la productividad en siete nuevas líneas promisorias de soya, en la zona de Vinces-Ecuador.
Fecha
2018-06-01
Autores
Título de la revista
ISSN de la revista
Título del volumen
Editor
Universidad de Guayaquil; Facultad de Ciencias para el Desarrollo.
Resumen
Se estudiaron siete líneas de soya desarrollados en la Universidad de Guayaquil y dos variedades comerciales, para determinar la resistencia o tolerancia a la roya asiática (Phakopsora pachyrhizi), y su relación con las variables productivas y componentes. El trabajo de investigación se desarrolló entre los meses de junio a octubre de 2017 durante la época seca. Se utilizó un diseño experimental de Bloques Completos al Azar con cuatro repeticiones, las variables cuantitativas fueron sometidas al análisis de la varianza y sus medias a comparaciones de Tukey. El análisis de regresión lineal encontró una relación significativa entre la roya y el número de vainas por planta (p=0,019); el análisis de correlación de Pearson determinó significancia en la variedad ITAV 07 entre las vainas por planta y las semillas por vaina (0,79), así como con el peso de 1000 granos (0,70), también se observó correlación entre las semillas por vaina y el peso de 1000 granos (0,77).
Seven soybean lines developed at the University of Guayaquil and two commercial varieties were studied, to determine the resistance or tolerance to Asian rust (Phakopsora pachyrhizi), and its relationship with the productive variables and components. The research work was developed between the months of June to October 2017 during the dry season. An experimental design of Randomized Complete Blocks with four repetitions was used, the quantitative variables were subjected to the variance analysis and their means to Tukey comparisons. Linear regression analysis found a significant relationship between rust and the number of pods per plant (p = 0,019); the Pearson correlation analysis determined significance in the variety ITAV 07 between the pods per plant and the seeds per pod (0,79), as well as the weight of 1000 grains (0,70), also correlation between the seeds was observed per pod and the weight of 1000 grains (0,77).
Seven soybean lines developed at the University of Guayaquil and two commercial varieties were studied, to determine the resistance or tolerance to Asian rust (Phakopsora pachyrhizi), and its relationship with the productive variables and components. The research work was developed between the months of June to October 2017 during the dry season. An experimental design of Randomized Complete Blocks with four repetitions was used, the quantitative variables were subjected to the variance analysis and their means to Tukey comparisons. Linear regression analysis found a significant relationship between rust and the number of pods per plant (p = 0,019); the Pearson correlation analysis determined significance in the variety ITAV 07 between the pods per plant and the seeds per pod (0,79), as well as the weight of 1000 grains (0,70), also correlation between the seeds was observed per pod and the weight of 1000 grains (0,77).
Descripción
Palabras clave
Phakopsora pachyrhizi, genotipos, productividad, soya, Phakopsora pachyrhizi, genotypes, productivity, soybean.
Citación
Apa