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珍珠菜属三种植物的核型研究 被引量:4

Karyotypes of three species in Lysimachia from China
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摘要 对国产三种珍珠菜属 (Lysimachia)植物进行了核型研究 ,其中点腺过路黄 (LysimachiahemsleyanaMaxim .)染色体核型 2n =2 2 =2m +4sm +8st+8t,聚花过路黄 (L .congestifloraHesmsl.)核型 2n =2 4=2m +2sm +1 0st+1 0t及山萝过路黄 (L .melampyroidesR .Knuth)染色体数目 2n =2 2 ,核型 2n =2 2 =4m +6sm +4st+8t,为首次报道。本文还分析了黄连花亚属 (subgen.Lysimachia) 2组 8种植物的核型 ,结果表明黄连花组(sect.Lysimachia)核型类型 1A ,过路黄组 (sect.Nummularia)核型类型 3A或 3B。 In this paper,karyological stuidies were carried out in three species of Lysimachia from China. The karyotype 2n=22=2m+4sm+8st+8t of Lysimachia hemsleyana Maxim,the karyotype 2n=24=2m+2sm+10st+10t of L. congestiflora Hesms,and the chromosome numbers 2n=22,and the karyotype 2n=22=4m+6sm+4st+8t of L. melampyroides R. Knuth are reported here for the first time. Karyological features in eight species of two sections in the subgen. Lysimachia were compared. The result shows that the karyotypes of sect. Lysimachia belong to Stebbins’“1A” and those of sect. Nummularia belong to Stebbins’“3A”or“3B”.
出处 《广西植物》 CAS CSCD 北大核心 2004年第1期25-27,共3页 Guihaia
基金 江西省自然科学基金项目 (96 32 5 5 )
关键词 点腺过路黄 聚花过路黄 山萝过路黄 染色体数 核型 珍珠菜属 Lysimachia hemsleyana Maxim. L. congestiflora Hesms L. melampyroides R. Knuth chromosome number karyotype
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