Chromosomal Doubling
Chromosomal doubling, also called polyploidy, occurs when a cannabis plant's chromosome count multiplies beyond the standard diploid (2n) state. Most commercial cannabis is diploid, containing two sets of chromosomes; doubled plants are tetraploid (4n) or higher. This trait arises naturally through mutation or can be induced artificially using colchicine or other mitotic inhibitors during seedling development. Doubled plants often exhibit larger flowers, thicker stems, and increased biomass, though growth rates and fertility may be affected. Lineage records from breeding programs frequently document polyploid work, particularly in pursuit of vigor and yield optimization.
Chromosomal Doubling strains
No strains tagged into Chromosomal Doubling yet — they'll appear here as breeders submit lineage records under this classification.
Chromosomal doubling, also called polyploidy, occurs when a cannabis plant's chromosome count multiplies beyond the standard diploid (2n) state. Most commercial cannabis is diploid, containing two sets of chromosomes; doubled plants are tetraploid (4n) or higher. This trait arises naturally through mutation or can be induced artificially using colchicine or other mitotic inhibitors during seedling development. Doubled plants often exhibit larger flowers, thicker stems, and increased biomass, though growth rates and fertility may be affected. Lineage records from breeding programs frequently document polyploid work, particularly in pursuit of vigor and yield optimization.
Breeders intentionally create polyploid lines to explore architectural changes, terpene expression shifts, and hybrid vigor. Tetraploid crosses with diploid parents can produce triploid offspring with novel characteristics, though fertility challenges often limit commercial viability.
Educational reference · Cultivar metadata only · No medical claims