Light Spectrum Phenotype Expression

Light spectrum phenotype expression refers to how cannabis plants' observable traits—including terpene production, pigmentation, and growth morphology—vary in response to different wavelengths of light during cultivation. Research in controlled-environment agriculture has documented that UV, blue, red, and far-red light frequencies can influence secondary metabolite synthesis, including volatile organic compounds. Breeders and cultivators working with LED technology have noted correlations between spectral composition and terpene profiles, though the mechanisms remain an active area of horticultural study. This trait is environmentally mediated rather than purely genetic, meaning identical genotypes may express different terpene concentrations under varying light conditions. Understanding light-driven phenotypic plasticity is relevant for standardizing cultivation protocols and interpret

Breeders document light-spectrum responses when evaluating strain stability and terpene expression consistency. Knowledge of spectral phenotype plasticity helps cultivators replicate desired aromatic profiles and informs controlled-environment breeding programs.