杂交障碍 meaning in English

crossing barrier

The research covered two aspects : one was the interspecific hybridization technology of boston ivy ( parthenocissus tricuspidata ) and virginia creeper ( parthenocissus quinqeufolia ) and the analysis of their hybrid obstacle
论文研究了地锦( parthenocissustricuspidata )和五叶地锦( parthenocissusquinqeufolia )的种间杂交技术，对杂交障碍进行了分析。