摘要
利用解剖学方法对委陵菜属四种植物的茎叶解剖特征进行了比较和分析,结果表明:四种植物茎的结构具有相似性,只是多茎委陵菜茎具有复表皮现象;从叶的结构看,二裂叶委陵菜属于等面叶,叶肉组织全部分化为栅栏组织,而其余三种叶均为背腹叶:综合四种植物茎叶解剖特征,四种委陵菜都具有旱生植物特征,但其抗旱性的发达程度不尽相同,其中以二裂叶委陵菜的抗旱特征最显著,其次为西山委陵菜,多茎委陵菜,鹅绒委陵菜较弱。
Compared and analyzed the anatomical structures for stem and leave of 4 plants in Potentilla. The results shows: stem structure of 4 species plants is similar, only Potentilla Multicaulis Bunge is compound epidermis; the leaf structure indicates, Potentilla bifarca L belongs to isobilateral leave, itsmesophyll differentiates completely palisade tissue, the others are bifacial.Synthesized the anatomical characteristic of stem and leave of these plants, they have the characteristic of xerophil, but the anti-drought structure degree is different, in which the anti-drought characteristic of Potentilla bifurca L is the most marked ,next is Potentilla sishanensis Bunge and Potentilla multicaulis Bunge, Potentilla anserina L is feeble oppositely.
出处
《青海师范大学学报（自然科学版）》
2003年第3期48-50,54,共4页
Journal of Qinghai Normal University(Natural Science Edition)
关键词
委陵菜属植物
茎
叶
解剖结构
比较
Potentilla
stem
leave
anatomical structures
study comparatively
