ale sterile Male fertile 回]p 配子 F Diploid products ●和○代表两种细胞 和代表两种线粒体 ·a代装两种质体 图11-1正反交差异形成原因的示意图 Male sterle Figure 20.12 Maternal inheritance of male sterility in maize(After M. M. Rhoades.)5