Plant Volatile Organic Compounds

Plant volatile organic compounds (VOCs) are small-molecular organic molecules released by cannabis plants into the air, including terpenes, esters, and aldehydes. These compounds form the basis of cannabis aroma and flavor profiles, produced in trichomes and leaf tissues as secondary metabolites. VOC composition varies significantly across strains due to genetic differences, environmental conditions, and developmental stage. Breeders and researchers analyze VOC fingerprints through gas chromatography and mass spectrometry to map strain characteristics and genetic relationships. Understanding VOCs is central to cannabis genetics work, as these profiles remain relatively stable markers across growing conditions.

Breeders select parent plants partly through VOC analysis, using aroma profiles as indicators of genetic lineage and stability. VOC data helps distinguish phenotypes and identify heritable traits within families, supporting more precise selective breeding and strain stabilization.