Cbdas Locus

The CBDA synthase (CBDAS) locus represents the genetic region responsible for encoding the enzyme that catalyzes conversion of cannabigerolic acid (CBGA) to cannabidiolic acid (CBDA) in cannabis plants. This locus is central to understanding CBD-dominant chemotypes, as plants carrying functional CBDAS alleles preferentially route their cannabinoid precursors toward CBDA production rather than THCA. Breeders and researchers have identified naturally occurring mutations and polymorphisms at this locus that correlate with varying levels of CBDA expression across cultivars. Mapping the CBDAS locus has become foundational to modern cannabis breeding programs seeking to develop stable high-CBD lineages and to understand the genetic basis of cannabinoid biosynthesis.

Breeders working with CBD-rich phenotypes rely on CBDAS locus characterization to predict and stabilize cannabinoid profiles across generations. Understanding CBDAS activity levels and allelic variation allows targeted crosses and backcrossing strategies to establish reliable high-CBDA production in cultivars.