Volatile Organic Compounds

Volatile Organic Compounds (VOCs) are small-molecule chemical constituents that readily evaporate or vaporize at room temperature, forming the aromatic profile of cannabis. In cannabis genetics, VOCs—including monoterpenes, sesquiterpenes, and other aromatic hydrocarbons—are produced in trichome glands and are responsible for the strain's characteristic smell and flavor notes. Lineage records frequently report VOC expression as a heritable trait, with certain parent plants consistently contributing distinct aromatic signatures to offspring. Breeders document VOC profiles through sensory evaluation and, increasingly, through chromatographic analysis to identify and stabilize aromatic phenotypes. Understanding VOC chemistry helps explain why sibling plants from the same cross may display different aromatic intensities or profiles depending on growing conditions and genetic expression.

Cannabis breeders select for and stabilize VOC profiles by identifying parent plants with distinctive aromatic qualities and crossing them to concentrate desired terpene ratios in offspring. Documented VOC expression serves as a marker trait for phenotype selection, allowing breeders to maintain consistency across seed batches and cultivar lines.