Recurrent Parent Selection

Recurrent parent selection (RPS) is a classical plant breeding methodology in which a superior parent plant is repeatedly crossed with segregating progeny, then those offspring are backcrossed to the same parent across multiple generations. In cannabis breeding, this technique is used to introgress desired traits—such as resin production, growth vigor, or pest resistance—into an elite genetic background while minimizing unwanted linkage drag. The process typically involves selecting the best F1 or F2 individuals that express both the target trait and parental characteristics, then crossing them back to the original superior parent. RPS differs from simple backcrossing in its cyclical, multi-generation structure and emphasis on phenotypic selection within each cycle. Breeders working with this methodology can stabilize complex polygenic traits more efficiently than single-generation selec

RPS is particularly valuable in cannabis programs seeking to preserve elite phenotypes while adding disease resistance, cannabinoid expression, or yield characteristics from secondary genetic sources. The iterative nature allows breeders to concentrate favorable alleles from both parents while reducing the genetic footprint of undesired traits from the donor parent.