Recurrent Parent Selection

Recurrent parent selection (RPS) is a structured breeding method where breeders repeatedly backcross offspring to one or both parental plants across multiple generations. This approach differs from F1 hybridization or open pollination; instead, it systematically re-introduces genetic material from the original parent(s) to stabilize desired traits. RPS is commonly used in cannabis breeding to concentrate specific cannabinoid profiles, terpene combinations, or plant structure characteristics while maintaining genetic diversity from the recurrent parent. The method typically involves selecting the best-performing offspring at each generation, crossing them back to the recurrent parent, and then selecting again—a cycle repeated across 4–8+ generations. Breeders working in this category often document which parent serves as recurrent (the "sink" for selection) and which contributes new varia

RPS allows breeders to accumulate minor favorable alleles from a donor parent while preserving the genetic background of a valued recurrent parent. This method is particularly relevant when establishing stable cultivars or repairing undesirable traits without losing desirable parental characteristics.