木兰属(Magnolia)系统发育探讨

Systematic development of Magnolia

在传统的形态解剖基础上 ,结合木兰科 (Magnoliaceae)种子内种皮合点区呈孔状或管状的新的分类依据 ,探讨了木兰属 (Magnolia)的系统发育 ,并提出了木兰属内可能的演化途径。

A pore or a tube is discovered on the chalazal region in the seeds of Magnoliaceous plants,and it is a peculiar character in this family,so it can be seen as a new identificational character of Magnoliaceous plants. On the basis of the character of chalazal region,with the traditional morphological and anatomical character,the systematic development of Magnolia is studied,and a evolutionary route of Magnolia is suggested.