| 濒危植物三棱栎四个居群的核型 |
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| 引用本文： | 韩春艳,孙卫邦.濒危植物三棱栎四个居群的核型[J].云南植物研究,2005,27(1):95-100. |
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| 作者姓名： | 韩春艳 孙卫邦 |
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| 作者单位： | 1. 中国科学院昆明植物研究所,云南,昆明,650204;中国科学院研究生院,北京,100039
2. 中国科学院昆明植物研究所,云南,昆明,650204;南京林业大学,江苏,南京,210037 |
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| 基金项目： | 中国科学院知识创新工程重要方向项目 (KSCX2 -SW - 10 4 ) |
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| 摘 要： | 报道了濒危植物三棱栎 4个居群的染色体数目和核型 ,4个居群的核型公式均为 2n =14 =10m 2sm 2st 2bs,核型类型均为 2A。间期核为复杂染色中心型 (complexchromocentertype) ,细胞有丝分裂前期染色体为中间型 (interstitialtype)。 4个居群在前期染色体中 ,可观察到2个B染色体 ,但在中期染色体中较少发现。根据核型分析结果 ,4个居群间核型变异不明显
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| 关 键 词： | 三棱栎 染色体数目 核型 B染色体 |
| 文章编号： | 0253-2700(2005)01-0095-06 |
Karyotype of the 4 Populations of Trigonobalanus doichangensis (Fagaceae),A Rare and Endangered Plant in China |
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| HAN Chun-Yan,SUN Wei-Bang.Karyotype of the 4 Populations of Trigonobalanus doichangensis (Fagaceae),A Rare and Endangered Plant in China[J].Acta Botanica Yunnanica,2005,27(1):95-100. |
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| Authors: | HAN Chun-Yan SUN Wei-Bang |
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| Institution: | HAN Chun-Yan~ |
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| Abstract: | The chromosome numbers and karyotypes of Trigonobalanus doichangensis in the 4 populations from Yunnan of China were firstly reported in this paper.The karyotype formulas of the 4 populations are all 2n=14=10m 2sm 2st 2bs,belonging to Stebbins's 2A type.The species is characterized by the resting nucleus of complex chromocenter type and the interstitial type of chromosomes in the mitotic prophase.Two B chromosomes were observed in the 4 populations at prophase chromosome.This study revealed that the karyotype variation in the 4 populations of T.doichangensis is not apparent. |
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| Keywords: | Trigonobalanus doichangensis Chromosome numbers Karyotype B chromosome |
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