新疆独尾草属植物的核型分析

详细信息

Karyotype Analysis of Eremurus in Xinjiang

College of Life Sciences, Shihezi University/Xinjiang BINGTUAN Key Laboratory of Oasis Eco-Agriculture, Shihezi, Xinjiang 832003, China

摘要: 对新疆独尾草属(Eremurus)植物的核型进行了研究。核型公式如下:阿尔泰独尾草[E.altaicus(Pall.)Stev.]2n=2x=14=4m+8sm+2st;异翅独尾草[E.anisopterus(Kar. et Kir)Regel]2n=4x=28=4m+4sm+20st;粗柄独尾草[E.inderiensis(M.Bieb)Regel]2n=2x=14=10sm+4st。首次发现古尔班通古特沙漠南缘所产的异翅独尾草2n=4x=28,与前人报道其为二倍体2n=2x=14的结果不一致。
- 独尾草 /
- 核型分析 /
- 核型二型性
Abstract: The karyotypes of Eremurus in Xinjiang were studied.Their karyotype formulas are as follows: E.altaicus(Pall.) Stev.2n=2x=14=4m+8sm+2st;E.anisopterus(Kar.et Kir)Regel 2n=4x=28=4m+4sm+20st;E.inderiensis(M.Bieb)Regel 2n=2x=14=10sm+4st.Our study has shown that E.anisopterus,a species occurring in the southern margin of the Gurbantunggut Desert,was a tetraploid with 2n=4x=28,a new chromosome count for this species which had been previously reported as a diploid with 2n=2x=14.The karyotype evolution of Eremurus in Xinjiang is discussed.
- Eremurus /
- Karyotype analysis /
- Karyotype evolution