中国姜花属十九个分类群的细胞学研究

胡 秀<sup>1</sup>; 吴福川<sup>2</sup>; 刘 念<sup>1*</sup>

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,(2):175-180.[点击复制]
	HU Xiu, WU Fu-Chuan, LIU Nian.Cytological studies on the 19 taxa of Hedychium in China[J].Guihaia,2011,(2):175-180.[点击复制]

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中国姜花属十九个分类群的细胞学研究
胡秀¹, 吴福川², 刘念^1*
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

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。

关键词:

DOI：10.3969/j.issn.1000-3142.2011.03.007

分类号:Q942

基金项目:

Cytological studies on the 19 taxa of Hedychium in China

HU Xiu¹, WU Fu-Chuan², LIU Nian^1*

1.Zhongkai University of Agriculture and Engineering, Guangzhou 520225, China;2.Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla 666303, China 1.Zhongkai University of Agriculture and Engineering, Guangzhou 520225, China; 2.Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla 666303, China

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.

Key words: Hedychium chromosome count genome number polyploid