Polyploid Selection

Polyploid selection refers to intentional breeding practices targeting plants with multiple sets of chromosomes (triploidy, tetraploidy, etc.) rather than the typical diploid cannabis genome. Breeders working in this category observe that polyploid specimens often display altered leaf morphology, potentially denser trichome patterns, and different secondary metabolite accumulation compared to diploid parents. This is a cultivation and genetics strategy rather than a traditional aroma descriptor. Polyploid cannabis remains an active area of horticultural research, with breeders exploring vigor, yield structure, and cannabinoid/terpene expression shifts. Results vary significantly depending on the polyploid level achieved and parental genetics involved.

Breeders employ polyploid induction (via colchicine or tissue culture) to create sterile or altered-fertility hybrids, increase genetic diversity within a single plant, and potentially enhance secondary metabolite expression. Polyploid lines serve as experimental germplasm for studying cannabis chromosome biology and generating novel phenotypes.