Genetic Male Sterility
Genetic male sterility (GMS) refers to heritable conditions where male cannabis plants are developmentally unable to produce viable pollen, despite otherwise normal morphology. This trait is controlled by nuclear genes rather than cytoplasmic factors, and can be either homozygous lethal or conditional depending on genetic background. Breeders have documented GMS systems in cannabis breeding programs as a research tool for controlling pollination and studying sex determination mechanisms. The trait appears sporadically in some lineages and is occasionally selected for in controlled breeding environments to prevent unwanted male gamete contribution.
Genetic Male Sterility strains
No strains tagged into Genetic Male Sterility yet — they'll appear here as breeders submit lineage records under this family.
Genetic male sterility (GMS) refers to heritable conditions where male cannabis plants are developmentally unable to produce viable pollen, despite otherwise normal morphology. This trait is controlled by nuclear genes rather than cytoplasmic factors, and can be either homozygous lethal or conditional depending on genetic background. Breeders have documented GMS systems in cannabis breeding programs as a research tool for controlling pollination and studying sex determination mechanisms. The trait appears sporadically in some lineages and is occasionally selected for in controlled breeding environments to prevent unwanted male gamete contribution.
Breeders working with GMS lines use this trait experimentally to simplify crossing designs and eliminate pollen contamination risk in seed production. GMS can reduce labor in feminized seed programs, though most commercial feminization relies on sex reversal rather than genetic male sterility.
Educational reference · Cultivar metadata only · No medical claims