摘要
利用扫描电镜对山东分布的18种莎草属植物的果实形状及果皮微形态进行了观察研究。结果表明,莎草属植物果实为椭圆状、倒卵状或卵状三棱形,顶端具柱状或锥状短喙;果皮微形态可分为:网-疣复合纹饰、网状纹饰、疣状纹饰和无规则突起纹饰4种类型;果皮微形态类型的划分与基于宏观形态特征的传统分类关联较小,但在该属形态相近的种间存在明显差异,可作为种间划分的依据。果皮微形态证据支持将水莎草属(Juncellus)、砖子苗属(Mariscus)和断节莎属(Torulinium)归入莎草属(Cyperus)的分类观点。
The achene shape and pericarp micro-morphology of 18 species of Cyperus in Shandong were observed and studied under scanning electron microscopy （SEM）. Results showed that the Cyperus achenes were ellipsoidal-, ovoid- and obovoid-triangular with a columnar or conoid short-beak at the apex. The pericarp micro-morphology was classified into four types, viz reticulate-verruciform, reticulate, verruciform and irregular raised ornamentation. Although micro-morphology classification did not exhibit a relationship with traditional macro- morphology classification, it found obvious differences among species similar in morphology within Cyperus and also provided evidence of circumscription among species. Pericarp micromorphology supported the opinion of attributinci Juncellus, Mariscus and Torulinium to Cyperus.
出处
《植物科学学报》
CAS
CSCD
北大核心
2014年第3期205-210,共6页
Plant Science Journal
基金
国家自然科学基金项目(31270233)
曲阜师范大学校级科研项目(XJ201122)
关键词
果实形状
果皮微形态
莎草属
山东
Fruit shape
Pericarp micro-morphology
Cyperus
Shandong
