pure breeding line

pure breeding line

or

true breeding line

a strain of individuals that are all homozygous for the genes being considered, so that their progeny show no variation in those genes. see BREEDING TRUE.
References in periodicals archive ?
Pedigree selection was practiced within the [F.sub.2], [F.sub.3], and [F.sub.4] segregating populations, and performance testing began in the [F.sub.4:6] generation with the advanced pure breeding line GA 962533.
The inbred is a pure breeding line resulting from up to nine generations of inbreeding and selection where undesirable aspects of the line are removed.
Researchers have traditionally had two methods to produce a pure breeding line. One requires self-fertilization of the progeny of two different parent lines over several generations, a time-consuming process that does not guarantee a pure breeding line.
Performance testing was begun in the [F.sub.4:6] generation with the advanced pure breeding line GA 982508.