Genotype By Environment Interaction

Genotype by environment interaction (G×E) describes how a cannabis plant's genetic potential for terpene expression varies depending on cultivation conditions. The same cultivar grown under different light spectra, temperatures, humidity, or soil compositions may produce notably different terpene profiles. Breeders and cultivators recognize that terpene ratios are not fixed traits but dynamic expressions influenced by both inherited genetics and environmental triggers. Understanding G×E effects is critical for reproducibility in breeding programs and for selecting stable lineages. This interaction complicates phenotype prediction and highlights why controlled environmental documentation matters in cannabis genetics research.

Breeders studying G×E effects can identify which genetic lines produce stable terpene profiles across diverse growing conditions versus those highly sensitive to environmental shifts. This knowledge helps select parent plants for crosses aimed at consistency, and informs decisions about which cultivars suit specific production environments.