Diallel crosses

The purpose of diallel cross-pollination is to ensure that every parent is equally represented, genetically, in a screening population. A diallel cross means that every parent within a group is cross-pollinated with every other parent in that group. A full diallel cross means that every parent is represented twice in each cross, once as the male parent and once as the female. A half-diallel cross means that each parent is represented only once in each cross, being represented as either the male or the female parent, but not both. Normally, in recurrent mass selection, a half-diallel is used and self-pollinations are omitted.

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