| 中国姜花属十九个分类群的细胞学研究 |
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| 引用本文： | 胡 秀,吴福川,刘 念.中国姜花属十九个分类群的细胞学研究[J].广西植物,2011,31(2):175-180. |
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| 作者姓名： | 胡 秀 吴福川 刘 念 |
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| 作者单位： | 1. 仲恺农业工程学院,广州,520225
2. 中国科学院西双版纳植物园,云南勐腊,666303 |
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| 摘 要： | 采用压片法对中国姜花属十八个分类群进行了体细胞染色体计数,对白姜花减数分裂终变期I的染色体数目和形态进行了观察。结果显示:包括白姜花在内的十九个分类群中有六个二倍体,一个三倍体,十二个四倍体,其中十二个分类群的体染色体数目为首次报道,显示中国姜花属植物具有较高比例的多倍体类型;姜花属的染色体基数为n=17,染色体组可能是多倍体起源的。
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| 关 键 词： | 姜花属 染色体计数 染色体基数 多倍体 |
Cytological studies on the 19 taxa
of Hedychium in China |
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| HU Xiu,WU Fu-Chuan,LIU Nian.Cytological studies on the 19 taxa
of Hedychium in China[J].Guihaia,2011,31(2):175-180. |
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| Authors: | HU Xiu WU Fu-Chuan LIU Nian |
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| Institution: | 1.Zhongkai University of Agriculture and Engineering, Guangzhou 520225, China; 2.Xishuangbanna
Tropical Botanical Garden, Chinese Academy of Sciences, Mengla 666303, China |
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| Abstract: | The somatic chromosome numbers of 18 taxa in Hedychium and the numbers and morphology of diakinesis I of H.coronarium were observed by crash method.The results show that:among the 19 taxa studied,there are six diploid(2n=2x=34),one triploid(2n=3x=51),and twelve tetraploid(2n=4x=68),thus indicating the high percentage of polyploidy of Hedychium in China.The chromosome numbers of twelve taxa were reported for the first time;the genome number of Hedychium is 17 and it is probably of polyploidy origin. |
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| Keywords: | Hedychium chromosome count genome number polyploid |
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