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Adaptabilidad y estabilidad de 20 variedades de maíz, Panamá

Authors: Gordón Mendoza, Román; Franco Barrera, Jorge Enrique; Camargo Buitrago, Ismael;

Adaptabilidad y estabilidad de 20 variedades de maíz, Panamá

Abstract

El objetivo de este trabajo fue determinar la adaptabilidad y estabilidad de variedades de maíz en Panamá. Durante el periodo de setiembre del 2007 a enero del 2008, se evaluaron ensayos uniformes de rendimiento en seis localidades con ambientes contrastantes en Panamá. El material genético de este ensayo consistió de nueve sintéticos QPM y once de grano normal, provenientes del CIMYT. Se utilizó un diseño experimental de bloques completos al azar con tres repeticiones, las parcelas experimentales consistieron de dos surcos de 5,0 m de largo, separadas a 0,75 m. El análisis de varianza combinado mostró diferencias estadísticas significativas entre ambos grupos (normal vs QPM) y dentro de cada grupo para el rendimiento y las otras variables de importancia económica y genética. Por otro lado, se encontró que la interacción genotipo por ambiente fue significativa para el rendimiento de grano indicando una respuesta diferencial de los genotipos. El análisis combinado de las medias de rendimiento mostró que entre los sintéticos normales se destacaron el SA-N6-07, SA-N8-07 y SA-N7- 07 con promedios superiores a las 4,0 t/ha, mientras que en los QPM sobresalieron el SA-Q14-07 y SA-Q12-07 con rendimientos de 3,98 y 3,63 t/ha. Todos estos sintéticos superaron tanto al testigo de grano normal (Guararé-8128) como al testigo QPM (SA-Q5-06) que tuvieron rendimientos de 2,93 y 3,36 t/ha, respectivamente. El modelo Biplot GGE-SREG, identificó los sintéticos SA-N6-07, SA-Q14- 07, SA-N4-07 y SA-N10-07 como los de mejor estabilidad; adicional los dos primeros fueron los mejores en rendimiento para cada tipo de grano.

Country
Costa Rica
Related Organizations
Keywords

QPM, Biplot GGE-SREG, S, grano normal, Agriculture, yellow grain, normal grain, grano amarillo

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
1
Average
Average
Average
Green
gold