Chromatography Based Phenotyping

Chromatography-based phenotyping refers to laboratory analytical techniques—such as gas chromatography (GC) and liquid chromatography (LC)—used to identify and quantify volatile and non-volatile compounds in cannabis plant material. These methods separate complex mixtures into individual chemical components, revealing terpene profiles, cannabinoid ratios, and other molecular markers that define a strain's chemical fingerprint. Unlike sensory evaluation, chromatography provides objective, reproducible data about aroma-active compounds and their concentrations. This approach has become foundational in cannabis breeding programs and seed selection, allowing breeders to track heritable traits across generations and identify desired chemotypes with precision.

Breeders use chromatography-based phenotyping to select parents for crosses targeting specific terpene profiles or cannabinoid combinations, ensuring consistency in offspring. This data-driven approach accelerates the stabilization of new varieties and helps establish breeding lines with documented chemical signatures.