Cultivation Genotype Interaction

Cultivation Genotype Interaction (CGI) refers to the complex relationship between a cannabis plant's genetic blueprint and its growing environment, which directly influences terpene expression and profile development. This phenomenon demonstrates that identical genetic lines can produce measurably different terpene ratios depending on factors such as light spectrum, temperature fluctuation, soil microbiology, nutrient timing, and humidity levels during flowering. Understanding CGI is central to cannabis breeding and cultivation science, as it explains why the same strain may yield varying aromatic characteristics across different grow operations or seasons. Breeders and cultivators increasingly recognize that terpene stability—or lack thereof—often stems from how a particular genotype responds to environmental triggers rather than fixed genetic expression alone.

Breeders working in this category focus on selecting for genetic stability and consistency across diverse cultivation methods, particularly when targeting specific terpene profiles for commercial or research purposes. Strains with lower CGI variance are often preferred in regulated markets because they deliver more predictable aromatic and chemical outcomes regardless of growing conditions.