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作 者 ：赵爱华 赵勤实 彭丽艳 张积霞 林中文 孙汉董

期 刊 ：云南植物研究 2004年 26卷 01期 页码：1-3

关键词：鬼针草；菊科；查耳酮；黄酮；

Keywords:Populus,

摘 要 ：从鬼针草Bidens pilosa L.地上部分的丙酮提取物中, 分离鉴定了18个化合物，其中包括一个新的查耳酮甙类化合物(α,3,2,4‘-tetrahydroxy-2‘-O-β-D-glucopyranosylchalcone,2)。其它化合物分别鉴定为butein (1),okanin 4-methyl ether-3′-O-β-glucoside (3),sulfuretin (4),6,7,3‘,4‘-tetrahydroxyaurone(5),海生菊苷(maritimein,6),(Z)-6-O-(6″-acetyl-β-D-glucopyranosyl)6,7,3‘,4‘-tetrahydroxy-aurone(7),(Z)-6-O-(4‘‘,6‘‘-diacetyl-β-D-glucopyranosyl)-6,7,3‘,4′-tetrahydroxy-aurone(8),(Z)-6-O-(3‘‘,4‘‘,6‘‘-triacetyl-β-D-glucopyranosyl)-6,7,3‘,4‘-tetrahydroxy-aurone-(9),木犀草素(luteolin,10)，槲皮素(quercetin,11),异槲皮苷(isoquercitrin,12),芦丁(rutin,13),黄芪苷(astragalin,14),quercetin-3,4‘-dimethyl ether-7-O-rutinoside(15),反式丁烯二酸(16),2-β-D-glucopyranosyloxy-1-hydroxy-trideca-3,5,7,9,11pentayne (17)和3-β-D-glucopyranosyloxy-1-hydroxy-6(E)-tetradecene-8,10,12-triyne (18).

Abstract:The paper identified and compared the karyotypes of 10 species(varieties) of Populus sectTacamhaca.The results were as follows:Ppseudosimonii Kitag.2n=38=27m+6sm(1SAT)+4st(2SAT)+1t(1SAT);Ptrichocarpa Torr.2n=38=2M+18m(1SAT)+8sm+10st(1SAT);Pcathayana Rehd.var.Beijing 2n=38=1M+24m+6sm+7st(2SAT);Pבpopularis’ 2n=38=3M+27m+2sm(1SAT)+4st(2SAT)+2t(1SAT);Pcathayana Rehd.var.Wutai 2n=38=5M+22m+4sm+5st+2t(2SAT);Pcathayana Rehd.var.Gansulinxiaman 2n=38=2M+28m+1sm+7st(1SAT);Pcathayana Rehd.var.Qinghai 2n=38=1M+27m+3sm+6st(3SAT)+1t(1SAT);Pcathayana×Zhongqing 10 2n=38=1M+26m+4sm+5st(2SAT)+2t(2SAT);Pcathayana×Zhongqing 48 2n=38=16m+10sm(1SAT)+10st(2SAT)+2t(1SAT).The results showed definite karyotype differences among the species of Tacamhaca.The karyotypes of most species(varieties) are made of m and sm and a few with st and t chromosomes.The karyotypes of Tacamhaca were all of 2B type of Stebbins.This study provided important basic data for taxon of Populus.

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