生殖力障礙; 性腺生成障礙
Dysgenesis \Dys*gen"e*sis\, n. [Pref. dys- + genesis.] (Biol.) A condition of not generating or breeding freely; infertility; a form homogenesis in which the hybrids are sterile among themselves, but are fertile with members of either parent race.
dysgenesis n : infertility between hybrids