CAJ | 학술논문

为了解狗尾草属(Setaria Beauv.)植物的叶片形态特征，采用石蜡切片法和徒手切片法观察5种狗尾草属植物的叶片形态结构。结果表明，5种狗尾草属植物叶表皮的解剖特征较一致，叶表皮细胞长度、气孔器大小、叶厚、角质层厚度等性状在种间存在显著差异，其中长细胞形状、垂周壁深浅、气孔器副卫细胞的形状和刺毛数量可以用来区分种类。叶片性状的相关分析表明，叶片气孔密度与气孔长度以及气孔宽度呈显著负相关，泡状细胞厚度与角质层厚度以及上表皮厚度呈显著正相关。根据禾本科叶表皮特征的演化趋势，狗尾草(S. viridis)最原始，金色狗尾草(S. glauca)和大狗尾草(S. faberii)较进化，皱叶狗尾草(S. plicata)和莩草(S. chondrachne)最高级。这些为狗尾草属植物分类学和系统演化关系提供资料。
위료해구미초속(Setaria Beauv.)식물적협편형태특정，채용석사절편법화도수절편법관찰5충구미초속식물적협편형태결구。결과표명，5충구미초속식물협표피적해부특정교일치，협표피세포장도、기공기대소、협후、각질층후도등성상재충간존재현저차이，기중장세포형상、수주벽심천、기공기부위세포적형상화자모수량가이용래구분충류。협편성상적상관분석표명，협편기공밀도여기공장도이급기공관도정현저부상관，포상세포후도여각질층후도이급상표피후도정현저정상관。근거화본과협표피특정적연화추세，구미초(S. viridis)최원시，금색구미초(S. glauca)화대구미초(S. faberii)교진화，추협구미초(S. plicata)화부초(S. chondrachne)최고급。저사위구미초속식물분류학화계통연화관계제공자료。
In order to understand the leaf morphological characteristics of leaves inSetaria, the anatomical structure of leaves in ifveSetariaspecies were studied by using parafifn section and freehand section methods. The results showed that the anatomical characteristics of leaf epidermis in five species were similar. The length of long cell and short cell, stomatal size and thickness of leaf and cuticular layer had signiifcant differences among ifve species. And the shape of long cell, pattern of anticlinal wall, shape of stomatal subsidiary cells, and number of prickle hairs could be used to identify species. The correlation analysis showed that there were signiifcant negative correlations between stomatal density and stomatal length, stomatal width. Besides, the thickness of bulliform cells had signiifcant positive correlations with thickness of cuticular layer and adaxial epidermis for 5 species. According to leaf epidermal traits in Gramineae, the evolution trend was in the order ofS. viridis →S. glauca andS. faberii→S. plicataandS. chondrachne. These could provide basic data for the study of systematics and evolution inSetaria.