毛茛属五种植物的核型  

Karyotypes of Five Species in Ranunculus

作　　者：史军伟[1] 徐玲玲[1] 方亮[1] 李同建[1] 赵中伟[1] 廖亮[1] 

机构地区：[1]九江学院生命科学学院,江西九江332000

出　　处：《武汉植物学研究》2009年第3期336-339,共4页Journal of Wuhan Botanical Research

基　　金：国家自然科学基金资助项目(30860027)

摘　　要：对中国云南毛茛属(Ranunculus)5种植物核型进行研究,结果表明,毛茛组茴茴蒜(Ranunculus chinensis Bunge)和禺毛茛(R.cantoniensis DC.)核型公式为2n=2x=16=6m+4sm+6st和2n=4x=32=14m+6sm+12st;该组茴茴蒜、禺毛茛和扬子毛茛(R.sieboldiiMiq.)的不同居群核型存在自西向东不对称系数渐增大现象。在美丽毛茛组中,深齿毛茛(R.pulchellus var.stracheyanus Hand.-Mazz.)的中甸居群核型(2n=4x=32=12m+12sm+8st)与青海居群核型(2n=4x=32=24m+8sm)明显不同;毛果高原毛茛(R.tangusticusvar.dasycarpus(Maxim.)L.Liou)染色体数目(2n=40),核型公式(2n=5x=40=30m+10sm)和纳帕海毛茛(R.napahaiensis W.T.Wang & L.Liao)染色体数目(2n=40),核型公式(2n=5x=40=20m+16sm+4st)为首次报道。The karyotypes of five species of genus Ranunculus in Yunnan province of China were analysed. In Sect. Ranunculus, the karyotype formulas of Ranunculus chinensis Bunge and R. cantoniensis DC. were 2n =2x = 16 =6m ＋4sin ＋6st and 2n =4x =32 = 14m ＋6sin ＋ 12st. The asymmetrical karyotype co- efficient of R. chinensis, R. cantoniensis and R. sieboldii Miq., gradually increased in different population from west to east in China. In Sect. Auricomus, the karyotypes （2n = 4x = 32 = 12m ＋ 12sin ＋ 8st） of R. pulchellus var. stracheyanus Hand. -Mazz. in Zhongdian population was obviously different from that in Qinghai population （2n =4x = 32 = 24m ＋ 8sm）. The chromosome numbers and karyotypes （2n = 40,2n = 5x = 40 = 30m ＋ 10sin）of R. tangusticus var. dasycarpus （Maxim.）L. Liou and that （2n = 40,2n = 5x = 40 =20m ＋ 16sin ＋4st） of R. napahaiensis W. T. Wang ＆ L. Liao are reported for the first time.

关 键 词：毛茛属 染色体数目 核型 

分 类 号：Q943[生物学—植物学]