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期 刊 ：植物遗传资源学报 2015年 16卷 1期

关键词：山丹；遗传多样性；居群；核型；

Keywords:Lilium pumilum DC, genetic diversity, poputation, karyotype,

摘 要 ：采用常规压片法对25个居群的山丹（Lilium pumilum DC）进行了核型分析研究。结果表明: 25个山丹居群间的核型存在一定的多样性。各居群山丹均为二倍体种，染色体基数为x=12，根尖细胞中的染色体数目为2n=2x=24。山丹染色体类型有st，sm，t，m，T。最长与最短染色体的比值在1.73~5.90之间，多数在2~4之间；不对称系数介于75.6%~89.6%之间；核型有3A、4A、3B、4B、3C、4C六种类型，其中以3B类型最多，占60%。

Abstract:The karyological analysis on 25 populations of L. pumilum was studied by conventional pressed slice method. The results showed that: The karyological type on 25 populations of L. pumilum was various.every populations of Lilium pumilum DC were diploid, x=12. In root tip cells, Chromosome numbers was mostly 2n=2x=24. Chromosome types of L. pumilum DC included st，sm，t, m and T. The ratio of the longest chromosome/the shortest chromosome was from 1.73 to 5.90, mostly in the range from 2 to 4; asymmetry coefficient was between 75.6%to 89.6%; Six types were: 3A, 4A, 3B, 4B, 3C, 4C, and 3B was the most type, which was 60%.

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