SI has various meanings in the Biology category. Discover the full forms, definitions, and usage contexts of SI in Biology.
Self incompatibility is a general name for several genetic mechanisms in angiosperms, which prevent self-fertilization and thus encourage outcrossing and allogamy. It should not be confused with genetically controlled physical or temporal mechanisms that prevent self-pollination, such as heterostyly and sequential hermaphroditism.
BiologyLast updated: