Somatic Mutation

Somatic mutations are genetic changes that occur in individual plant cells during vegetative growth, rather than being inherited from parent genetics. These spontaneous alterations can affect pigmentation, leaf morphology, growth pattern, or cannabinoid/terpene expression in localized areas or entire branches. Breeders and cultivators have historically identified and propagated somatic mutations through cloning, as the altered trait appears only in the daughter plant's tissue, not its seeds. Notable examples include variegated leaf patterns, compact growth forms, and altered resin production. Understanding somatic mutations is essential for cannabis lineage work, as many stabilized cultivar traits originated from isolated mutations later selected and cloned repeatedly.

Breeders use somatic mutation identification and clonal propagation to develop novel phenotypes without crossing. Stabilizing a desirable somatic mutation requires consistent vegetative reproduction to maintain the altered genetic expression in those specific cell lines.