摘要
在光学显微镜下观察了菊科莴苣族6属11种植物的叶表皮形态,观察了叶上下表皮细胞形状及垂周壁式样、气孔器类型和分布特征。结果表明:这些植物的叶上下表皮细胞多数为不规则形,少数为多边形;垂周壁式样多数为浅波形或深波形,少数为平直形。一些种类气孔器仅分布在下表皮,但也有不少种类上下表皮都有气孔器分布。气孔器都属于无规则型,且都是随机分布。叶表皮显微构造在一定程度上能反映出类群间的关系,为探讨莴苣族的分类学问题提供了新的证据。
The leaf epidermis of 11 species belonging to 6 genera in Lactuceae （Compositae） was investigated using light microscopy. Morphological characters of leaf epidermis, such as the shape of leaf epi- dermal cells, patterns of anticlinal wall, stomatal type and distribution, are of important taxonomic significance. The results show that the shape of epidermal cell is irregular, and rarely polygonal; the patterns of anticlinal walls are sinuolate or sinuate, and rarely straight; the stomatal apparatus, which are randomly distributed, only exist in the abaxial epidermis for a few species, but for others, they occur in adaxial and abaxial epidermis simultaneously. All the stomatal apparatuses fall into anomocytic type. In a certain extent, leaf epidermal characters reflect the relationship among or between the taxa, thus providing new evidence for taxonomy of Lactuceae.
出处
《植物研究》
CAS
CSCD
北大核心
2008年第4期396-401,共6页
Bulletin of Botanical Research
基金
温州师范学院引进人才启动基金
浙江省高校青年教师资助计划项目资助
关键词
菊科
莴苣族
叶表皮
形态特征
分类学意义
Compositae
Lactuceae
leaf epidermis
morphological characters
taxonomic significance
