Cbda Synthase Dominance

CBDA synthase dominance refers to cannabis plants expressing elevated levels of cannabidiolic acid (CBDA) synthase enzyme activity, the precursor pathway to cannabidiol (CBD). This genetic trait results in plants that naturally accumulate CBDA as their primary cannabinoid before decarboxylation. Lineage records frequently report CBDA synthase dominance in breeding programs selecting for CBD-rich phenotypes, though the underlying genetic markers remain an active area of cannabis science research. Plants expressing this trait typically show lower THCa synthase activity, creating a biochemical competition at the CBDA/THCa synthase locus. Understanding CBDA synthase dominance is essential for breeders developing CBD-focused cultivars and for studying cannabinoid biosynthesis pathways.

Breeders working in high-CBD development prioritize CBDA synthase dominance as a foundational genetic trait, often using it as a selection marker in early breeding generations. The trait's stability across generations makes it valuable for establishing consistent CBD-rich cultivar lines.