摘要
在光学显微镜下,对蔷薇亚科8属17种植物的叶表皮微形态特征进行了观察和研究,结果表明:所研究的蔷薇亚科植物可划分为3种气孔器类型,即无规则型、放射状细胞型和无规则四细胞型;叶表皮的气孔器一般分布在下表皮,而在菊叶委陵菜(potentilla tanacetifolia)中发现其上表皮也存在气孔器;气孔器类型和气孔指数的特点表明,叶表皮微形态特征在一定程度上能够反映该亚科一些属种之间的演化关系.综合叶表皮、气孔器类型和气孔器指数等特征,认为具无规则气孔器的鸡麻(Rhodotypos)、重瓣棣棠(Kerria japonica)和山楂叶悬钩子(Rubus crataegifolius)等属于较为原始的类群,而具放射状细胞型气孔器的地榆属于较为进化的类群.
Ultrastructural characteristics of leaf epidermis of 17 species from 8 genera in Rosoideae Focke are characterized under an optical microscope. Three different stomatal apparatus are found： Anomocytic, Actinocytic and Anomotetracytic stomatal apparatus. Stomatal apparatus is consistently found in the lower epidermis except Potentilla tanacetifolia. Stomatal apparatus classification and stomatal index could be used to relate evolutionary relationship among different genera and species in Rosoideae. Based on leaf epidermis, stomatal apparatus type and index, Rhodotypos, Kerria japonica, Rubus crataegifolius with Anomocytic type stomatal apparatus are primary groups, whereas Sanguisorba officinalis with Actinocytic type are more evolutionarilt advanced groups.
出处
《北京师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第5期515-519,共5页
Journal of Beijing Normal University(Natural Science)
基金
国家大学生创新性实验计划资助项目
北京师范大学本科生科研基金资助项目
关键词
蔷薇亚科
气孔器类型
叶表皮微形态
分类
系统学意义
Rosoideae Focke
stomatal apparatus type
leaf epidermal micro-morphology
taxonomy
systematic significance
