鱼腥草与其易淆品百部还魂的叶形态-脉序图谱的鉴别特征  

Identification Characters of Leaf Morphological and Venation Pattern of Houttuynia cordata with Its Confused Herb Gymnotheca chinensis

作　　者：陆海琳[1] 郭敏[1] 廖月葵[1] 黄丁英[1] 黄春妮[1] 吴晓晨[1] 何报作[1] 

机构地区：[1]广西中医药大学药学院,广西南宁530001

出　　处：《中药材》2012年第11期1763-1768,共6页Journal of Chinese Medicinal Materials

基　　金：国家自然科学基金资助项目<叶形态-脉序图谱鉴定中药的方法研究及其支持平台的建立>(30860371)

摘　　要：目的:寻找鱼腥草与其易淆品百部还魂的鉴别特征,建立有效的鉴别方法。方法:LMVP(叶形态-脉序图谱鉴别法),QAERM(定量分析评价鉴别中药品种真伪方法的可靠性的方法)。结果:两者脉序类型均为"不达缘柄生环结-顶聚脉序"。主要区别:鱼腥草叶表面有灰白色气孔小凸起,托叶-叶柄鞘的舌状凸起明显,一级脉7或5条,近中脉的一级脉的靠拢点在湾缺上方或上端,靠拢段平直,鲜叶具明显的鱼腥气;百部还魂叶表面不具灰白色气孔小凸起,托叶-叶柄鞘的舌状凸起不明显,一级脉5条,近中脉的一级脉的靠拢点在湾缺内,靠拢段弯曲,鲜叶无鱼腥气。同时以上述区别点为指标,鉴别结果的正确性(Ac)=100%;重复性为符合率(ARO)=100%,一致性强度(Kappa)=1.00。结论:建立的"叶形态-脉序图谱鉴别法"可准确鉴别鱼腥草及易淆品百部还魂。操作简便、快速、价廉、可靠性强。Objective： To study the identification characters of Houttuynia cordata and its confused herb Ccymnotheca chirtensis and establish an identification method. Methods： LMVP （leaf morphological-venation pattern for identification Chinese herbs）, and QAERM （quantitatively analyze and evaluate reliability for the method of identification Chinese herbs） were applied for the study. Re- sults： Both venations were brochidodromous-acmdromous and arising from the mid-petiole or the upper section of petiole. The main characteristic of the leaf of Houttuynia cordata ： surface with small gray-white stoma protuberances ; Ligulate process of stipule-petiole sheath were clear; Primary veins 7 or 5 ; The innermost pair of primary vein closed up the top of the sinus at blade base or above sinus, and the section of closed vein was straight; Emitted a smell of fish when fresh leaf was kneaded into pieces. The main feature of the leaf of Gymnotheca chinensis： no small gray-white stoma protuberances; Ligulate process of stipule-petiole sheath were not clear; Primary veins 5 ; The innermost pair of primar^y vein closed into the sinus at blade base, and the section of closed vein was slightly curve; No smell of fish. With the mentioned key differences, the both plants could be successfully identified from each other. The accuracy of i- dentification results （AC） was 100%, the repeatability of identification results： agreement rate for observation （ARO） was 100% and Kappa value was 1.00. Conclusion： The established method is simple, rapid, economic and reliable.

关 键 词：鱼腥草 百部还魂 叶形态 脉序图谱 中药鉴定 

分 类 号：R282.5[医药卫生—中药学]