Cannabidiol Chemotype

The cannabidiol chemotype (CBD-dominant or CBD-type) refers to cannabis plants that accumulate cannabidiol as their primary cannabinoid, typically with THC levels below 0.3% in regulated markets or significantly lower than CBD content in unregulated breeding. These plants result from selective breeding for specific allelic expressions in cannabinoid synthase genes, particularly favoring CBDA synthase activity over THCA synthase. CBD chemotypes emerged through deliberate stabilization by breeders seeking non-intoxicating cannabinoid profiles, with lineage records frequently documenting crosses between high-CBD cultivars and hemp-derived genetics. The chemotype is chemically stable across generations when both parents carry recessive alleles suppressing THC production, making it a reliable breeding target for consistent cannabinoid ratios.

Breeders working with CBD chemotypes focus on maintaining stable 1:1 CBD-to-THC ratios or achieving CBD-dominant profiles (10:1 or higher) through backcrossing and marker-assisted selection. Understanding cannabinoid loci inheritance allows breeders to predictably produce compliant, CBD-forward cultivars without unintended THC expression.