安徽产两种山罗花属植物及其居群叶的微形态比较

利用离析法、扫描电镜和石蜡切片法对安徽产2种3居群山罗花属植物的叶进行了微形态比较研究，结果表明：该属植物叶表皮细胞形状为不规则形，垂周壁呈波状、深波状至重波状；表皮细胞内含叶绿体；角质层具条状纹饰；表皮上有表皮毛和腺毛分布，扫描电镜下表皮毛具瘤状突起的纹饰；栅栏组织只有1层，排列比较疏松，海绵组织有发达的胞间隙；气孔器多为无规则型，极少数仅有一个副卫细胞，仅分布于下表皮，扫描电镜下气孔外拱盖内缘近光滑或浅波状。2种植物在垂周壁式样、表皮毛密度、气孔器长宽比、栅栏组织和海绵组织的厚度比以及中脉的结构特征等具有明显的差异，而山罗花3居群间的差异不明显。

Comparative Mieromorphology of the Leaves of 2 Species and Populations in Melampyrum L.from Anhui

Comparative micromorphology of the leaves of 2 species and 3 populations in Melampyrum from Anhui were studied with epidermal maceration,electron microscope and paraffin section method.The results are as follows:the shapes of leaf epidermal cells which have chloroplast, are irregular and the anticlinal walls are sinuous,sinuate, or double-sinuate, the cuticular membrane of leaf epidermis is striated; Both trichome and glandular are on the epidemis,the trichome has neoplasitic process under SEM. The palisade tissue consists of only one lay cells which line up loosely,and the spongy tissue has developed interstitial space; The stomatal apparatus which only distribute in lower epidermis are mainly of anomocytic type,but few concur to have only one accessory cell. Under SEM observation, the inner margin of outer stomatal ledge is near smooth or sinuolate. The results show that the significant micromorphological differences among two species are the pattern of anticlinal,the density of trichome,the length and width ration of stomatal apparatus, the ratio of palisade tissue to apongy tissue and the characters of middle veins,but there are not many differences among 3 populations of Melampyrum roseum.