Genotype Phenotype Correlation

Genotype-phenotype correlation describes how a cannabis plant's genetic makeup (genotype) expresses observable characteristics (phenotype), including terpene profiles. In cannabis breeding, this relationship is complex—identical genetics may produce different terpene ratios under varying environmental conditions such as light, temperature, and soil composition. Understanding this correlation helps breeders predict which plants will reliably express desired aromatic compounds across growing conditions. Lineage records frequently report significant phenotypic variation within single seed lots, highlighting the importance of pheno-hunting and selection. This principle underpins modern cultivar stabilization and seed preservation strategies.

Breeders working in cannabis genetics use genotype-phenotype correlation to identify stable, reliably-expressing lines through multi-generation selection and environmental testing. Stabilizing terpene expression across phenotypes is a primary goal in F1 and IBL (inbred line) development.