Genotype Phenotype Divergence

Genotype-phenotype divergence describes the phenomenon where genetically identical or closely related cannabis plants express notably different aromatic profiles depending on environmental conditions, cultivation practices, and epigenetic factors. A single strain grown under varying light spectra, soil chemistry, temperature ranges, or harvest timing can produce distinct terpene ratios and aromatic signatures. This variability is particularly relevant for breeders stabilizing new lines, as it highlights why phenotype selection requires multiple growing cycles across different conditions. Understanding this divergence is essential for reproducible breeding work and explains why identical seeds may yield different aromatic outcomes in different facilities.

Breeders use controlled phenotype screening across multiple environments to identify stable genetic expressions and select for consistency. Recognizing genotype-phenotype divergence helps distinguish true genetic traits from environmentally-induced variation, improving line stability and predictability.