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鸭跖草科杜若(Pollia japonica Thunb.)的减数分裂研究

纪炜炜, 孟爱平, 李建强

纪炜炜, 孟爱平, 李建强. 鸭跖草科杜若(Pollia japonica Thunb.)的减数分裂研究[J]. 植物科学学报, 2006, 24(3): 196-200.
引用本文: 纪炜炜, 孟爱平, 李建强. 鸭跖草科杜若(Pollia japonica Thunb.)的减数分裂研究[J]. 植物科学学报, 2006, 24(3): 196-200.
JI Wei-Wei, MENG Ai-Ping, LI Jian-Qiang. Meiosis Studies of Pollia japonica Thunb. (Commelinaceae)[J]. Plant Science Journal, 2006, 24(3): 196-200.
Citation: JI Wei-Wei, MENG Ai-Ping, LI Jian-Qiang. Meiosis Studies of Pollia japonica Thunb. (Commelinaceae)[J]. Plant Science Journal, 2006, 24(3): 196-200.

鸭跖草科杜若(Pollia japonica Thunb.)的减数分裂研究

详细信息
    通讯作者:

    李建强, E-mail:jianqiangl@hotmail.com

  • 中图分类号: Q943;Q949.1+8.71

Meiosis Studies of Pollia japonica Thunb. (Commelinaceae)

  • 摘要: 首次对鸭跖草科杜若(Pollia japonicaThunb.)进行了花粉母细胞减数分裂观察,并重新报道了该种的染色体数目为2n=32。结果显示,减数分裂中期I构型为16Ⅱ,并且观察到次级联会现象。减数分裂后期I和后期Ⅱ存在落后染色体、染色体断片、二次分裂不同步等异常现象,统计各时期畸形率都低于10%。随机统计花粉粒活性,成熟率达到90%以上。这说明杜若的减数分裂过程基本正常,也证明了2n=32的体细胞染色体数目是可信的。
    Abstract: In this paper,the meiotic process of pollen mother cells and the somatic chromosome number 2n=32 of Pollia japonica Thunb.(Commelinaceae) are reported for the first time.The chromosomes in metaphase Ⅰ possess the configuration of 16Ⅱand the secondary association has also been observed.During anaphase Ⅰ and anaphaseⅡ,lagging chromosomes,chromosomal fragments and asynchronism have been observed and the abnormality rates of both phases are less than 10%.The rate of fertile pollen grains is more than 90%,which is consistent with the cell abnormality rate at anaphase Ⅱ.These results indicate that meiotic process of this species is normal,and the somatic chromosome number 2n=32 is credible.
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出版历程
  • 收稿日期:  2005-12-21
  • 修回日期:  2006-03-05
  • 发布日期:  2006-06-25

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