Definition of hybrid vigour in English:

hybrid vigour


  • [mass noun] The tendency of a cross-bred individual to show qualities superior to those of both parents.

    Also called heterosis
    • ‘We therefore think that the results are more easily explained if immigrant genes are selectively favored, for instance, by hybrid vigor, which has been shown for one of the metapopulations.’
    • ‘This phenomenon is commonly denoted as midparent heterosis of hybrid vigor.’
    • ‘The molecular basis of hybrid vigor has remained unknown despite the importance of this phenomenon in evolution and in practical breeding programs.’
    • ‘The causes of inbreeding depression and the converse phenomenon of heterosis or hybrid vigor remain poorly understood despite their scientific and agricultural importance.’
    • ‘Utilization of hybrid vigor or heterosis has been successful in cross-pollinated crops, of which maize is a primary example.’