中文摘要：

生物种类概念以杂交定义种类。在种类之间杂交被繁殖隔离机制阻止。把 and Helicoverpa assulta 基于我们在 Helicoverpa 有佩带徽章权利的人之间的种间的杂交的结果，二种的繁殖隔离机制被分析。prezygoticfactors (不在的性吸引力和生殖器的物理不兼容) 和 postzygoticfactors (在 F_1 混血儿的女缺席和部分绝育) 的联合引起二种的繁殖隔离。另外，在种形成的种间的杂交的角色被讨论。

英文摘要：

The biological species concept defines species in terms of interbreeding. Interbreeding between species is prevented by reproductive isolation mechanisms. Based on our results of interspecific hybridization between Helicoverpa armigera and Helicoverpa assulta, reproductive isolation mechanisms of the two species are analyzed. A combination of prezygotic factors （absent sex attraction and physical incompatibility of the genitalia） and postzygotic factors （female absence and partial sterility in F1 hybrids） causes reproductive isolation of the two species. In addition, the role of interspecific hybridization in speciation is discussed.