| 摘要: |
| 对横断山区两种菊科植物圆齿狗娃花和细叶亚菊进行了染色体数目报道和核型研究,其中圆齿狗娃花为首次报道,2n=18=2x=18m(2SAT); 而细叶亚菊的为新的染色体数目,2n=72=8x=56m+16sm,与之前报道的36不同。研究结果发现菊科植物这两个属在横断山及其它地区同时存在二倍体与多倍体。 |
| 关键词: 横断山区 圆齿狗娃花 细叶亚菊 核型 |
| DOI： |
| 分类号:Q943 |
| Fund project: |
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| Karyological studies on two species of Compositae from the Hengduan Mountains, SW China |
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CHEN Jian-Guo1, XU Bo2, LI Zhi-Min2*, SUN Hang1
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1.Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences,
Kunming 650204, China;2.College of Life Science, Yunnan Normal University, Kunming 650092, China
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| Abstract: |
| Chromosome numbers and karyotypes of two Compositae species from the Hengduan Mountains were studied. Heteropappus crenatifolius was reported as 2n=18=2x=18m(2SAT)for the first time. A new chromosome number of Ajania tenuifolia was found to be 2n=72=8x=56m+16sm,different from previous report of 36. Based on these results as well as previous reports,it's found that both diploid and polyploid occurred in the two genera from the Hengduan Mountains and other regions. |
| Key words: Hengduan Mountains Heteropappus crenatifolius Ajania tenuifolia karyotype |
