Thcas Locus
The THCAS locus refers to the genetic location controlling expression of tetrahydrocannabinolic acid synthase (THCAS), the enzyme responsible for converting cannabigerolic acid (CBGA) into THCA in cannabis plants. This locus is central to cannabinoid biochemistry and has been the subject of significant breeding interest and genetic mapping research. Plants carrying functional THCAS alleles typically produce THCA-dominant chemotypes, while mutations or silencing at this locus are associated with low-THC phenotypes. Understanding THCAS expression patterns helps breeders predict cannabinoid profiles across breeding populations and select for specific chemotype outcomes.
Thcas Locus strains
No strains tagged into Thcas Locus yet — they'll appear here as breeders submit lineage records under this family.
The THCAS locus refers to the genetic location controlling expression of tetrahydrocannabinolic acid synthase (THCAS), the enzyme responsible for converting cannabigerolic acid (CBGA) into THCA in cannabis plants. This locus is central to cannabinoid biochemistry and has been the subject of significant breeding interest and genetic mapping research. Plants carrying functional THCAS alleles typically produce THCA-dominant chemotypes, while mutations or silencing at this locus are associated with low-THC phenotypes. Understanding THCAS expression patterns helps breeders predict cannabinoid profiles across breeding populations and select for specific chemotype outcomes.
Breeders working in cannabinoid-focused programs use THCAS locus markers to identify and stabilize THC-producing lines versus low-THC or CBD-dominant varieties. Genetic testing at this locus has become a standard tool in modern cannabis breeding for chemotype prediction and selective crossing strategies.
Educational reference · Cultivar metadata only · No medical claims