山东蔊菜属叶片解剖学研究

Studies on leaf Anatomy of Rorippa in Shandong

本文通过石蜡切片对蔊菜属的叶片进行了解剖观察,结果表明蔊菜属叶片中柱鞘纤维的分布可分为两种类型,成束或分散存在。在由湿生→旱生的演化过程中,中柱鞘纤维表现为由分散存在→成束分布的规律。叶片横切面的各指标可以为种的识别提供分类依据。

In this paper,the leaf of Rorippa.is studied by means of paraffin section, the leaf bundle sheath fibre can be diveded into two types,bundle or scattered.From damp enviroment to dry circumstances,bundle sheath fibre displays the rule from scat tered existence to bundle existence.The norm of leaf section may provided taxonomic ba- sis for distinguishing species.