[目的]为了能够全面了解国家Ⅱ级濒危植物珊瑚菜的果实形态解剖特征,探讨其在当归亚族乃至整个伞形科的起源与演化地位.[方法]利用普通电镜观察和石蜡切片法,对珊瑚菜的成熟果实外观及果实横切面解剖结构进行了观察.[结果]珊瑚菜分生果压扁类型为背腹轻度压扁,横切面呈近五角星状；分生果5个果棱比较发达,呈角状突起；果壁较其他伞形科植物发达,中果皮细胞层数较多,排列较紧密；果实维管束数目较多且比较发达.[结论]与其他伞形科植物相比,珊瑚菜特殊之处在于果棱具木栓质翅.这是由珊瑚菜果实横切面中维管束较发达造成的.通过与当归亚族中其他属的比较,推测珊瑚菜属在当归亚族中处于相对比较原始的位置.%[ Objective ] The research aimed to study the morphology and anatomical structures of Glehnia. littoralis and discuss the origin and evolutionary status in Angelica subgroup. [ Method ] The morphology and anatomical structures of Glehnia. littoralis cremocarp, a species endangered of Apiaceae in China, were observed with electron microscope and paraffin section. [Result] The fruit of Glehnia. littoralis was slightly flattened dorsally and transaction of fruit was nearly pentagon. 5 fruit rib was well-developed and appeared horn-shaped. Fruit wall was thicker than others and layers of mesocarp was more. The vascular bundle was well-developed and the number was more. [ Conclusion] Comparing to the other Apiaceae plants, the ftuit rib with corky wing was unique. This was attributed to well-developed vascular bundle. Glehnia. littoralis was more primitive than that of other genus in Angelica subgroup.
展开▼
