Gc Ms Chemotyping

Gas chromatography-mass spectrometry (GC-MS) chemotyping is a laboratory analytical method used to identify and quantify cannabinoids and terpenes in cannabis plant material. Unlike field phenotyping or visual inspection, GC-MS provides precise chemical profiling by separating compounds and measuring their molecular weight and abundance. Breeders and seed banks rely on GC-MS data to document strain lineages, verify genetic stability across generations, and establish baseline chemical profiles for breeding stock. This technique has become foundational in modern cannabis genetics documentation, allowing breeders to track whether crosses produce predictable cannabinoid and terpene ratios. GC-MS chemotyping is distinct from bioassay or subjective sensory evaluation—it produces reproducible, objective chemical fingerprints.

Breeders use GC-MS chemotyping to select parent plants with consistent cannabinoid and terpene profiles, ensuring offspring maintain desired chemical traits across generations. Documented GC-MS profiles create a searchable reference for lineage verification and help breeders identify which genetic backgrounds produce stable, predictable chemotypes.