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Resultados del primer ciclo de mejoramiento con accesiones de maíz, provenientes del CIMMYT de México

Authors: Hernández Carrillo, Genry; Pérez Cantillo, Ibrahim; Yero Pino, Idania L.;

Resultados del primer ciclo de mejoramiento con accesiones de maíz, provenientes del CIMMYT de México

Abstract

Contexto: Disponer de un material que exprese mayores niveles de rendimiento, calidad y tolerancia a condiciones de estrés, necesita desarrollar mejores variedades e híbridos de maíz, para lo que la caracterización y evaluación preliminar puede ofrecer resultados útiles, resultando necesario conocer el grupo de individuos que podrían ser los progenitores de la generación mejorada. Objetivo: Evaluar el comportamiento de 21 accesiones de Maíz procedentes del CIMMYT de México, en las condiciones edafoclimáticas del municipio de Vertientes. Métodos: Se utilizó un diseño de bloques al azar con tres réplicas, se evaluaron las características agronómicas de 24 accesiones de maíz. Se registraron los siguientes caracteres: altura de planta y la mazorca, floraciones masculina y femenina, ciclo biológico, longitud de la mazorca, número de hilera por mazorca, masa de 1000 granos (g), rendimiento de grano (t.ha-1). Resultados: Los caracteres vegetativos altura de la planta y de la mazorca, mostraron ser variables directamente proporcionales, caracterizándose por un porte pequeño; las entradas expresaron un ciclo precoz y la floración masculina con respecto a la femenina tuvieron una diferencia en días de (±1,22 días). Conclusiones: Las entradas que presentaron mejores características agronómicas fueron la 14, 19, 18, 15 y 10 y un rendimiento promedio de 4,39 t.ha-1 respectivamente. Se obtuvo semilla para el próximo ciclo de mejoramiento de 19 entradas. Se puso en práctica la selección masal en la primera generación de la F1, permitiendo la continuidad del próximo ciclo de selección.

Keywords

accesiones de maíz, Agriculture (General), características morfo agronómicas, mejoramiento, S1-972

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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!
0
Average
Average
Average
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gold