semisterile
Semisterile is an adjective used in biology to describe partial sterility: an organism, line, or population that produces fewer viable gametes or offspring than a fully fertile reference. The term is informal and not tied to a universal numerical threshold; what counts as semisterile varies by species and context. It is important to distinguish semisterile from complete sterility (no viable gametes) and from subfertility (reduced fertility without a clear cut-off in gamete viability).
Causes and occurrence vary by organism. In plants, semisterility often arises from chromosomal imbalances, heterozygous incompatibilities
Measurement and interpretation also depend on context. Researchers describe semisterility by reporting relative pollen viability, seed
Semisterility thus represents a gradation between full fertility and complete sterility, signaling partial impairment of reproductive