Evaluation of tropical maize (Zea mays) inbred lines as sources of favorable alleles to improve elite single corn hybrids.

Authors

  • Narciso Vergara-Ávila 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.v16i2.11865

Keywords:

Lines, progenitors, hybrids, favorable alleles.

Abstract

Progenitors of three single corn hybrids were

crossed with 23 lines with the purpose of identifying donor

lines for improving grain yield of AN1 x AN2, SSE232-33-30

x SSE255-18-19 and SSE255-18-19 x M.L.S4-1. Lines per se

and their crosses among hybrid parents were evaluated

separately in three environments in Mexico during 1997.

Statistically-significant differences for grain yield among

donor lines for minimally-based estimations of favorable

alleles μG and μ were found. The highest values of

favorable alleles were detected in three tropical lines

CML258, CML264 and CML273 and three subtropical

CML311, CML312 and CML319. The improvement of grain

yield in each elite hybrid appears possible with several donor

lines. The modified procedure of identify donor lines of

favorable alleles μ , showed more efficiency than μG

original.

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How to Cite

Vergara-Ávila, N., Rodríguez-Herrera, S. A., & Córdova-Orellana, H. S. (2005). Evaluation of tropical maize (Zea mays) inbred lines as sources of favorable alleles to improve elite single corn hybrids. Agronomía Mesoamericana, 16(2), 127–136. https://doi.org/10.15517/am.v16i2.11865

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