东北柴胡属细胞分类学研究Ⅰ．6种柴胡的核型分析

CYTOTAXONOMICAL STUDIES ON BUPLEURUM L. IN NORTHEAST CHINA Ⅰ. KARYOLOGY ANALYSIS OF SIX TAXA AND THEIR SIGNIFICANCE OF TAXONOMY

本文报道了国产６种柴胡的核型，发现在肇东五里木存在一种与日本产三岛柴胡Ｂ．ｆａｌｃａｔｕｍ具有相同核型特征的柴胡，暂称其五里木居群。柞柴胡Ｂ．ｋｏｍａｒｏｖｉａｎｕｍＬｉｎｃｚ．２ｎ＝８＝２ｍ＋６ｓｍ（２ＳＡＴ）．红柴胡Ｂｓｃｏｒｚｏｎｅｒｉｆｏｌｉｕ，Ｗｉｌｌｄ．２ｎ＝１２＝１０ｍ（２ＳＡＴ）＋２ｓｍ．北柴胡ＢｃｈｉｎｅｎｓｅＤＣ．２ｎ＝２４＝１４ｍ＋１０ｓｍ（２ＳＡＴ）．锥叶柴胡Ｂ．ｂｉｃａｕｌｅＨｅｌｍ２ｎ＝３２＝２０ｍ＋１２ｓｍ．大叶柴胡Ｂ．ｌｏｎｇｉｒａｄｉａｔｕｍＴｕｒｃｚ．２ｎ＝１２＝１０ｍ（２ＳＡＴ）＋２ｓｍ五里木居群２ｎ＝２６＝１６ｍ＋１０ｓｍ（２ＳＡＴ）文章最后根据核型特征分析了东北地区各种柴胡间的演化关系．

This paper reported karyotypes of six taxa of Bupleurum L. and discovered that new taxon in Wulimu, Zhao dong county had the same karyotype as B. falcatum in Japan,which was called temporarily to Wulimu population. Karyotype formulas of those taxa are showed as follows: B. komarovianum Lincz. 2n= 8 = 2m+6sm(2SAT). B. scorzonerifolium Willd. 2n= 12= 20m+12. B. chinense DC. 2n =24= 14m+10sm(2SAT). B. bicaule Helm 2n = 32== 10m(2SAT)+2sm. B. longiradiatum Turcz. 2n =12 = 10m(2SAT)+2sm. Wulimu population 2n = 26= 16m+10sm (2SAT). It was discussed that evolutionary relationchips among those taxa of Bupleurum L. in Northeast China based on karyotypic characters.