Open Access

ARTICLE

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

by Antuna Grijalva O¹, SA Rodríguez Herrera¹, A Espinoza Banda¹, P Cano Ríos¹, G Llaven Valencia², JL Coyac Rodríguez¹, A González Torres¹, DG Reta Sánchez³, M Mendoza Elos⁴, E Andrio Enríquez⁴

1 Profesor investigador de la Universidad Autónoma Agraria Antonio Narro Unidad Laguna. Periférico Raúl López Sánchez Km. 2. C.P. 27054, Torreón, Coahuila, México. Tel. y Fax 01(871) 729 76 75.
2 Investigador del Campo Experimental Valle del Fuerte del Instituto Nacional de Investigaciones Forestales Agrícolas y Pecuarias. Centro de Investigación Regional Norte Cen-tro. Campo Experimental La Laguna. Blvd. Prof. José santos Valdés 1200 Pte. Matamoros, Coahuila, México. C.P. 27440. Tel. 01(871) 762 02 02 al 05. Fax 01 (871) 762 07 15.
3 Investigador del Campo Experimental La Laguna del Instituto Nacional de Investigaciones Forestales Agrícolas y Pecuarias. Centro de Investigación Regional del Noroeste. Campo Experimental, Valle del Fuerte, Juan José Ríos, Guasave, Sinaloa, México. Carretera Internacional México-Nogales Km 1609 C.P. 81110. Tel. 01 (55) 38 71 87 00
4 Profesor investigador del Instituto Tecnológico de Roque. Km 8 Carretera Celaya-Juventino Rosas C.P. 38110 Roque Celaya, Guanajuato. Tel. 01(461) 611 5903.

Address correspondence to: Oralia Antuna Grijalva, e-mail:

Phyton-International Journal of Experimental Botany 2017, 86(all), 246-251. https://doi.org/10.32604/phyton.2017.86.246

Abstract

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.

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Keywords

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