几种易混种子类中药的扫描电镜鉴别

Distinction of Several Pairs of Easily Confusable Herbal Seeds Under Scanning Electron Microscope

用扫描电镜对几种易混中药酸枣仁和枳子、韭菜子和葱子、芥子和芸苔子的表面进行了扫描鉴别。结果表明：酸枣仁表面有许多不规则的凹窝，枳子表面却有许多乳头状突起；韭菜子种皮细胞不规则形或多角形，外壁附有角质突起，葱子种皮细胞多角形，可见胞间联丝；芥子种皮细胞类多角形。垂周壁厚且外突，芸苔子种皮细胞多角形，垂周壁薄，微突出，外壁内凹外被网状角质纹理。

Easily confusable seed of Ziziphus jujuba var. spinosa (Bunge ) Hu and Hovenia acerba Lindl., Allium tuberosum Rottl .ex spreng. and A. fistulosum; Sinapis alba L. and Brassica campestris L. were examined under scanning electron microscope. Results s howed that: 1. )irregular nests were present on the surface of semen Z. jujuba var. spinosa, while papillae appeared on the surface of senen H.acerba Lindl; 2. ) Cells of seed coat of semen A. tuberosum were irregularly shaped or polygonic with protruding cutin on its peridium, while that of Semen A. fistulcsum were polygonic with connecting fibers between cells; 3. ) cells of semen S.alba L. were similarily polygonic, with thick and protruding vertical perine,while that of semen B. campestris L. were also polygonic, but its vertical perine were thiner and less protruding, its peridium shrinked in side and was covered with cutinous nets veins.