Heterosis, a widely existing biological phenomenon, has been successfully exploited on breeding of many animals. However, because of the complexity of heterosis mechanism and the restriction of studying method, great advance had not been achieved on prediction of heterosis, which limits its further utilization. So, the study of heterosis mechanism and forecast still needs to be carried out.
In this experiment, three parental lines Large White、 Landrace、 Meishan and their hybrids Large White × Lan...