Genetic components of agronomic traits in maize landraces and their hybrid progeny

Knowledge of the genetic components of agronomic traits is an important factor to characterize landraces of maize to make them useful in plant breeding programs. The objective of this work was to know the genetic action and combining ability of several agronomic traits of five maize races and their...

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Bibliographic Details
Published in:Phyton (Buenos Aires) 2017-01, Vol.86, p.246
Main Authors: Antuna Grijalva O, Sa Rodríguez Herrera, A Espinoza Banda, P Cano Ríos, Valencia, G Llaven, Jl Coyac Rodríguez, A González Torres, Dg Reta Sánchez, M Mendoza Elos, Enríquez, E Andrio
Format: Article
Language:eng ; fre ; ger ; ita ; por ; spa
Subjects:
Agronomy
Combining ability
Corn
Crop yield
Dry matter
Flowering
Genetic crosses
Genotypes
Plant breeding
Plant growth
Progeny
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Summary:Knowledge of the genetic components of agronomic traits is an important factor to characterize landraces of maize to make them useful in plant breeding programs. The objective of this work was to know the genetic action and combining ability of several agronomic traits of five maize races and their crosses. Maize landraces analyzed were Jala, Tuxpeño, Celaya, Pepitilla and Dulce. Plant height, days to male and female flowering date after planting, and dry matter and grain yields were recorded. Those variables showed highly significant differences among genotypes. With the exception of dry matter yield, the other variables showed significant general combining ability effects (GCA). Statistically, plant height and female flowering date did not show specific combining ability (SCA) differences. Pepitilla x Dulce and Jala x Tuxpeño crosses, and Jala and Celaya parents, were the best dry matter and grain yields. Plant height, male and female flowering dates, and grain yield were controlled by additive genes. On the other hand, dry matter yield showed non-additive gene action.
ISSN:0031-9457
1851-5657