Seed Sterility

Seed sterility in cannabis genetics refers to the inability of plants to produce viable seeds, a trait sometimes observed in certain hybrid crosses or polyploid lines. This phenomenon is distinct from terpene production and is more accurately classified as a reproductive characteristic influenced by chromosomal or genetic incompatibility. Breeders occasionally encounter sterility as an unintended consequence of wide crosses or when working with triploid or other non-diploid material. While not a terpene, seed sterility remains documented in cannabis genetics literature as a notable trait affecting breeding programs and cultivation outcomes.

Breeders working with hybrid vigor and wide crosses sometimes encounter seed sterility as a byproduct of genetic incompatibility between parent lines. Understanding sterility mechanisms helps breeders select for or against the trait depending on breeding objectives, particularly in feminized seed development or when maintaining specific clonal lines.