Polyploid Cannabinoid Expression

Polyploid cannabinoid expression refers to altered terpene and cannabinoid profiles observed in polyploid cannabis plants—those with more than two sets of chromosomes. Tetraploid (4n) and triploid (3n) plants frequently exhibit different aromatic compound ratios compared to diploid (2n) counterparts, though the mechanism remains incompletely understood. These genetic duplications can influence biosynthetic enzyme activity and precursor availability, potentially shifting monoterpene and sesquiterpene ratios. Breeders working in polyploidy research have documented increased myrcene, limonene, or pinene dominance in some lines, while others show muted or altered aromatic profiles. Polyploid effects on aroma are complex and strain-dependent, making this area an active focus for cannabis genetics research.

Breeders employ polyploidy induction (colchicine treatment) as a breeding tool to explore novel aroma phenotypes and potentially enhance terpene expression levels. Polyploid-derived plants are also evaluated for seed vigor, interploidy crosses, and stability of aromatic traits across generations.