Light Spectrum And Secondary Metabolites

Light spectrum significantly influences secondary metabolite production in cannabis, including terpene synthesis and cannabinoid expression. UV-B exposure and specific wavelengths trigger stress-response pathways that upregulate volatile organic compound (VOC) biosynthesis. Cannabis plants commonly show increased terpene diversity and concentration under controlled spectral conditions, particularly in the UV and blue spectrum ranges. This relationship reflects the plant's natural adaptation to environmental pressures during flowering. Understanding light-spectrum relationships helps breeders and cultivators identify genetic lines with consistent secondary metabolite profiles across growing conditions.

Breeders working with controlled-environment selection increasingly factor spectral response into phenotype evaluation. Lines demonstrating stable terpene production across varied light conditions are valued for consistency and environmental resilience in breeding programs.