Terpene Polygeny

Terpene polygeny describes the phenomenon where a cannabis plant's volatile aromatic profile results from the cumulative expression of multiple genes, each contributing small additive effects. Rather than a single gene controlling a particular terpene's presence or abundance, polygenic inheritance means many loci across the genome influence overall terpene composition. This genetic architecture explains why terpene profiles vary continuously across populations and why breeding for specific aromatic outcomes often requires careful selection across multiple generations. Lineage records frequently report that strains sharing similar terpene signatures may achieve them through different genetic pathways, reflecting the complexity of polygenic traits. Understanding terpene polygeny helps breeders recognize that aroma stability depends on fixing favorable alleles at numerous loci simultaneousl

Breeders working with terpene polygeny must apply multi-generational selection rather than single-trait crossing, as no single parent guarantees offspring aromatic profiles. Stabilizing lines for consistent terpene expression requires identifying and combining complementary genetic backgrounds that collectively produce desired volatile compounds.