CAJ | 학술논문

用光学显微镜和扫描电镜,较全面地观察了铁线莲属(Clematis)植物和邻近类群的叶表皮特征,并对其系统学意义进行了讨论.在光学显微镜下,观察了铁线莲属12组63种5变种及其同族邻近类群3属9种;在扫描电镜下,观察了铁线莲属7组27种2变种及其邻近类群2属6种植物的成熟叶表皮细胞及气孔器的特征.在光学显微镜下可见:叶表皮细胞形状(表面观)为多边形、不规则形,垂周壁式样为较平直、浅波状和波状,气孔器普遍存在于下表皮,少数种的上表皮也有分布,其类型均为无规则型.在扫描电镜下可见:叶片通常具有条纹或有颗粒状或鳞片状附属物,气孔器外拱盖内缘通常为浅波状或近平滑.在黄花铁线莲组(sect. Meclatis (Spach) Tamura)和灌木铁线莲组(sect. Fruticella Tamura)中,叶表皮具有双面气孔器的特征对于组下亚组的划分有一定意义.并且叶表皮特征对于一些种的分类学处理也有一定的价值,同时也为属下组间的系统进化关系提供了一些线索.
용광학현미경화소묘전경,교전면지관찰료철선련속(Clematis)식물화린근류군적협표피특정,병대기계통학의의진행료토론.재광학현미경하,관찰료철선련속12조63충5변충급기동족린근류군3속9충;재소묘전경하,관찰료철선련속7조27충2변충급기린근류군2속6충식물적성숙협표피세포급기공기적특정.재광학현미경하가견:협표피세포형상(표면관)위다변형、불규칙형,수주벽식양위교평직、천파상화파상,기공기보편존재우하표피,소수충적상표피야유분포,기류형균위무규칙형.재소묘전경하가견:협편통상구유조문혹유과립상혹린편상부속물,기공기외공개내연통상위천파상혹근평활.재황화철선련조(sect. Meclatis (Spach) Tamura)화관목철선련조(sect. Fruticella Tamura)중,협표피구유쌍면기공기적특정대우조하아조적화분유일정의의.병차협표피특정대우일사충적분류학처리야유일정적개치,동시야위속하조간적계통진화관계제공료일사선색.
For finding valuable systematic characters, leaf epidermis of 77 taxa, representing 12 sections of the genus Clematis and three related genera in the Ranunculaceae, were examined mainly by means of light microscopy (LM), and partially by scanning electron microscopy (SEM). It was shown that the leaf epidermal cells were usually irregular or polygonal in shape. The patterns of anticlinal walls were straight, arched or undulate. The stomatal apparatus is anomocytic and exists in abaxial epidermis of all species, and in the adaxial epidermis of some species. Under SEM observation, the leaf epidermis was often striated, seldom nearly smooth, and often with flakes attached. Evidence from leaf epidermis serves as a criterion for distinguishing the subsections in sect. Meclatis (Spach) Tamura and in sect. Fruticella Tamura. The results also support that there are several separate evolutionary processes in the genus Clematis.