Aptitud combinatoria general y específica de líneas de maíz (Zea mays) tropical y subtropical.

Narciso Vergara-Ávila; Sergio Alfredo Rodríguez-Herrera; Hugo Salvador Córdova-Orellana

doi:10.15517/am.v16i2.11866

General and specific combining ability of tropical and subtropical maize (Zea mays) lines.

Authors

Narciso Vergara-Ávila Centro Internacional de Mejoramiento de Maíz y Trigo (CIMMYT)
Sergio Alfredo Rodríguez-Herrera Universidad Autónoma Agraria Antonio Narro, Instituto Mexicano del Maíz
Hugo Salvador Córdova-Orellana Centro Internacional de Mejoramiento de Maíz y Trigo (CIMMYT)

DOI:

https://doi.org/10.15517/am.v16i2.11866

Keywords:

Lines, testers, GCA, SCA, hybrids.

Abstract

Twenty maize

lines were crossed with six inbreds used as testers, with the

objective of examining their general and specific combining

ability and determine their usefulness in a hybridization

program. The crosses were evaluated in three environments

at Mexico during 1997. General combining ability (GCA)

and specific combining ability (SCA) effects were calculated

using a Line x Tester analysis. CML264 (1586 kg/ha) and

CML319 (1285 kg/ha) were the highest GCA lines in the

tropical and subtropical group, respectively. The highest

SCA effects were for the crosses CML322 x M.L.S4-1 (1651

kg/ha) and CML258 x SSE255-18-19 (1512 kg/ha). These

results indicate that it is possible to develop a hybrid program

using the best lines released by the International Maize and

Wheat Improvement Center (CIMMYT), and the best testers

from UAAAN.

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How to Cite

Vergara-Ávila, N., Rodríguez-Herrera, S. A., & Córdova-Orellana, H. S. (2005). General and specific combining ability of tropical and subtropical maize (Zea mays) lines. Agronomía Mesoamericana, 16(2), 137–143. https://doi.org/10.15517/am.v16i2.11866

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Issue

2005: Agronomía Mesoamericana: Vol. 16, Issue 2 (July-December)

Section

Articles

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