Green Leaf Volatiles

Green leaf volatiles (GLVs) are a class of organic compounds produced by cannabis plants in response to environmental stress, particularly mechanical damage, herbivory, or pathogenic pressure. These volatile organic compounds—including hexanal, hexenal, and hexenol—are commonly detected in early-stage plant defense cascades and constitute a significant portion of the fresh, grassy, or herbaceous aromatics in cannabis biomass. GLVs are frequently studied in cannabis breeding contexts because their presence correlates with plant vigor and stress responsiveness. While GLVs themselves are not unique to cannabis, their abundance and ratio vary considerably across genetic backgrounds, making them relevant markers for understanding cultivar phenotypes and environmental interactions. Breeders working in preservation and landrace genetics often track GLV profiles as an indicator of natural resili

Breeders monitor GLV expression during stress-response trials to identify cultivars with robust defensive chemistry and rapid recovery capacity. GLV profiling via headspace analysis or GC-MS has become a tool in lineage verification and phenotype differentiation, particularly when evaluating stability across generations or environmental conditions.