黑龙江悬钩子属植物叶表皮形态结构的研究

利用扫描电子显微镜对黑龙江悬钩子属植物的叶表皮形态结构进行比较研究。结果显示:(1)悬钩子属植物叶的上表皮细胞呈多边形,垂周壁平直,或无规则形,垂周壁浅波纹;下表皮细胞无规则形,垂周壁浅波纹或深波纹。(2)表皮毛类型有单细胞直立不分支、卷曲不分支,头状腺毛和盾状腺毛四种类型。(3)气孔器均分布于下表皮,且气孔器类型为无规则形;气孔外拱盖单层、内缘平滑或不规则波状。研究表明,黑龙江悬钩子属植物的叶表皮微形态学特征表现出一定差异性,对种间的划分和鉴定具有一定的分类学意义。

Morphology Structure of Leaf Epidermis of Genus Rubus in Heilongjiang

A study on morphology structure of leaf epidermis of the genus Rubus in Heilongjiang were conducted with scanning electron microscope (SEM).The results are as following:(1)The upper epidermal cells of Rubus are polygonal,with anticlinal wall strait,or the cells of upper epidermis are irregular-shaped,with anticlinal sinuolate;the cells of lower epidermis are irregular-shaped,with anticlinal wall sinuolate or sinuate.(2)Four types of trichomes are recognized in this study,as unicelluar unbranched and straight hair,unicelluar unbranched and curled hair,capitate and peltate glandular hairs,respectively.(3)Stomatal apparatus are located in lower epidermis;all of them are anomocytic,uni-layered outer stomatal rim,smooth or irregular-undulate inner margin of outer stomatal ledge.The differences in the leaf micromorphology of these species threw lights on the systematics of Rubus L.