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Two-locus theory in recurrent selection for general combining ability in maize

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Two-locus theory for recurrent selection for general combining ability in maize was developed. The theory featured: (a) recombination of the selfed progeny of selected parents; and (b) linkage disequilibrium in the initial gametic array. The theory indicated: (a) that initial linkage disequilibrium exerts a permanent influence upon selection progress; (b) that interposition of one or more generations of random mating before each cycle reduces the permanent effect in ensuing cycles; and (c) that random mating done before initiation of selection is more efficient in removing the influence of linkage disequilibrium on selection progress than random mating done between subsequent cycles.

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Communicated by R. W. Allard

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Johnson, G.R. Two-locus theory in recurrent selection for general combining ability in maize. Theoret. Appl. Genetics 61, 279–283 (1982). https://doi.org/10.1007/BF00273786

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Key words

  • Maize
  • Corn
  • Zea mays L.
  • Recurrent selection
  • General combining ability