三种百合科植物的染色体组型分析

Karyotype Analysis of three species of Liliaceae L

对生长在陕西秦岭南坡的三种百合科植物：七叶一枝花（ParispolyphyllaSm．）、野百合（LiliumbrowniiF．E．BrownexMiellez）、川百合（LiliumdavidiiDuchartre）进行了染色体组型分析．其结果是：七叶一枝花的核型公式为K（2n）=10=6m＋4m[SAT]，核型分级为1A型．野百合的核型公式为K（2n）=24=10m＋14st，核型分级为3B型．川百合的核型公式为K（2n）=24=8m＋6sm＋10st，核型分级为3B型．同时，在两种百合的染色体核型分析中都发现有一至两条B染色体存在．

The present paper reports the chromosome numbers and karyotypes of three species in Liliaceae L. from south Shaanxi of China. The results are shown as follows: Paris polyphylla Sm. K (2n) = 10 = 6m+ 4m[SAT]; Lilium brownii F. E. Brown ex Miellez: K (2n) = 24 = 10m + 14st; Lilium dawidii Duchartre: K (2n) = 24 = 8m + 6sm + 10st. According to stebbins (1971) karyotype classification, the karyotype of them belong to 1A, 3B and 3B respectively. There are one or two B-chromosome in L. brownii F. E. Brown ex Miellez and L. dawidii Duchartre.