铁箍散(五味子科)的核型研究  

Karyotype of Schisandra propinqua(Schisandraceae)

作　　者：杨志荣[1] 林祁[1] 

机构地区：[1]系统与进化植物学国家重点实验室中国科学院植物研究所,北京100093

出　　处：《植物研究》2007年第6期661-663,666,共4页Bulletin of Botanical Research

基　　金：国家自然科学基金(30270103);中国科学院知识创新工程项目(KSCX2-SW-108)

摘　　要：采用常规制片方法首次对铁箍散(Schisandra propinqua(Wall.)Baill.)做了核型分析,结果表明铁箍散体细胞染色体数目为2n=28,核型公式为2n=2x=20m+8sm,染色体相对长度组成2n=28=2L+14M2+8 M1+4S,染色体长度比为2.14,核型类型为2B型,核型不对称系数0.59,无次缢痕和随体。铁箍散的核型特点表明其在五味子属中处于较进化的地位。Using the common slice-making method, the karyotype of Schisandra propinqua （Wall.） Bailh was analyzed for the first time. The results showed that S. propinqua is 2n =2x =20m ＋8sm, the constitution of relative length is 2n = 28 = 2L ＋ 14M2 ＋ 8 M1 ＋ 4S and ratio of the longest chromosome to the shortest is 2. 14. In addition, its karyotype belongs to 2B type, asymmetry index is 0. 59. Secondary constriction and satellite are not found. The feature of karyotype suggested that S. propinqua should be relatively advanced in Schisandra Michx..

关 键 词：五味子科 铁箍散 核型 

分 类 号：Q942[生物学—植物学]