Polyploidy Selection

Polyploidy selection refers to breeding practices targeting plants with increased chromosome sets (triploid, tetraploid, or higher). In cannabis genetics, breeders historically work with diploid plants (two chromosome sets), but polyploid specimens occasionally arise and display altered morphology, vigor, and terpene profiles. Polyploid cannabis plants often exhibit larger flowers, modified leaf structure, and different secondary metabolite concentrations compared to standard diploid counterparts. This trait is studied in breeding programs exploring genetic diversity and phenotypic variation, though polyploid cannabis remains relatively uncommon in commercial cultivation due to stability and reproduction challenges.

Breeders occasionally select for or document polyploid traits when attempting to expand genetic libraries or investigate novel chemotypes. Polyploid specimens can introduce unique morphological and biochemical characteristics into breeding projects, though maintaining stable polyploid lines requires specialized techniques and careful population management.