作　　者： ; ;

机构地区： 中国科学院华南植物园

出　　处： 《植物分类学报》 2008年第4期628-640,共13页

摘　　要： 利用光镜和扫描电镜对国产花椒属Zanthoxylum s.l.40种(变种)植物的叶表皮形态特征进行了观察。结果发现:无规则型气孔器普遍存在于所有研究种类叶下表皮及个别种类叶上表皮;叶表皮细胞有规则多边形、不规则多边形2种形态;垂周壁式样有平直、浅波状和深波状3种类型。在扫描电镜下,叶表皮气孔器外拱盖内缘为平滑、浅波状或波状;气孔器附近的角质膜平坦或皱褶,表面光滑或具有各种纹饰。叶表皮形态特征研究结果表明崖椒亚属subgen.Fagara与花椒亚属subgen.Zanthoxylum之间存在有许多的共同点,它们共同组成广义花椒属。文中还对叶表皮特征在花椒属部分种类分类中的应用进行了讨论。 Leaf epidermis characters in 40 of ca. 250 species ofZanthoxylum （Rutaceae） were investigated using light microscopy （LM） and scanning electron microscopy （SEM）. The stomata are anomocytic and exist only on the abaxial epidermis except in Z. nitidum, which also has stomata on the adaxial surface. The epidermal cells are usually polygonal or irregular in shape, with anticlinal walls straight, arched, repand, or sinuous. Under the SEM, the inner margin of the outer stomatal rim is nearly smooth, sinuolate or erose, and the cuticular membrane of the leaf epidermis is smooth, striate, or sometimes striate to wrinkled. These data of leaf epidermis of Zanthoxylum demonstrated that there exist many common characters between subgen. Fagara and subgen. Zanthoxylum, sug- gesting a close relationship between the two subgenera. The utility of some characters in identifying some species of Zanthoxylum was also discussed.

关 键 词： 叶表皮 系统学意义 花椒属

领　　域： [生物学] [农业科学] [农业科学]