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论文 |
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| 论文题目: |
Chromosome numbers and polyploidy in Leontopodium (Asteraceae: Gnaphalieae) from the Qinghai-Tibet Plateau of S.W. China
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| 论文题目英文: |
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| 作者: |
Meng, Ying; Nie, Ze-Long; Sun, Hang; Yang, Yong-Ping
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| 论文出处: |
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| 年: |
2012
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| 卷: |
65 |
| 期: |
2 |
| 页: |
87-93 |
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| 发表期刊: |
CARYOLOGIA |
| 第一作者所在部门: |
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| 影响因子: |
0.45
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| 摘要: |
Leontopodium R. Br. ex Cass. is the second largest genus within the Asian Gnaphalieae (Asteraceae) and is most diversified on the Qinghai-Tibet Plateau and its adjacent areas of SW China. The chromosome numbers and karyomorphology of five species from this region were investigated for the first time: Leontopodium sinense (2n = 28 = 22m + 6sm), L. muscoides (2n = 24 = 22m + 2sm), L. souliei (2n = 52 = 32m + 20sm), L. pusillum (2n = 72 = 52m + 20sm), and L. nanum (2n = 48 = 24m + 24sm). The results suggest that the basic chromosome number of Leontopodium is x = 14, followed with dysploidy numbers (e.g. x = 12, 13). Polyploidization has also played an important role in the evolution of Leontopodium in this region. |
| 英文摘要: |
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