Reproductive Phenotypes

Reproductive phenotypes refer to the observable characteristics of cannabis plants that directly relate to sexual expression, flowering timing, and seed production. These traits include dioecious expression (distinct male/female plants), monoecious expression (both sexes on one plant), hermaphroditism, photoperiod sensitivity, and autoflowering capacity. Breeders classify plants by reproductive phenotype to predict breeding outcomes, manage pollination, and stabilize desired traits across generations. Understanding reproductive phenotypes is foundational to cannabis genetics work, as these traits determine whether a line will reliably produce feminized seeds, require careful isolation, or exhibit environmental sensitivity.

Breeders select for specific reproductive phenotypes to control genetics stability, reduce unwanted pollination, and develop true-breeding lines. Stabilizing photoperiod dependence versus autoflowering capacity, or achieving female-only genetics through selective breeding of monoecious traits, are core breeding objectives that depend on accurate phenotype identification and consistent expression a