长白山3种橐吾的核型研究

草业学报 ›› 2010, Vol. 19 ›› Issue (4): 259-263.

• 研究简报 • 上一篇

长白山3种橐吾的核型研究

董然¹,瞿小杰¹,王丽清²,刘洪章^1*

1.吉林农业大学园艺学院,吉林长春130118;
2.吉林省磐石市园艺特产技术推广站,吉林磐石 132300

收稿日期:2009-08-28 出版日期:2010-08-20 发布日期:2010-08-20
作者简介:董然(1966-),女,吉林敦化人,教授,在读博士。E-mailDongr999@163.com
基金资助:
吉林省科技厅项目(20060222)资助。

Karyotype studies on three Ligularia of Changbai Mountain

DONG Ran¹, QU Xiao-jie¹, WANG Li-qing², LIU Hong-zhang¹

1.College of Horticulture, Jilin Agricultural University, Changchun 130118, China;
2.Panshi Horticultural
Specialty Technical Popularization Station of Jilin Province, Panshi 132300, China

Received:2009-08-28 Online:2010-08-20 Published:2010-08-20

摘要/Abstract

摘要： 采用常规压片法对长白山主产的复序橐吾、全缘橐吾、狭苞橐吾进行了核型研究。结果表明,3种橐吾的染色体数目均为2n=58,核型除全缘橐吾为2A外,其他2种均为2B。核型不对称系数介于59.22%～62.89%,核型公式分别为2n=2x=58=42m+16sm,2n=2x=58=44m+12sm+2st,2n=2x=58=32m+26sm。从染色体相对组成来看,复序橐吾为2n=58=2L+20M₂+30M₁+6S、全缘橐吾为2n=58=28M₂+28M₁+2S、狭苞橐吾为2n=58=2L+28M₂+26M₁+2S,供试的3种橐吾的染色体数和核型均为首次报道。

Abstract: Karyotypes of three Ligularia species (L. jaluensis, L. Mongolia, and L. intermedia) from Changbai Mountain were studied using the conventional pressed disc method. The chromosome numbers of the three species were all 2n=58 and the karyotype of L. mongolia was 2A while those of the other two species were 2B. Their indices of karyotypic asymmetry were between 59.22% and 62.89%. Their karyotype formulas were 2n=2x=58=42m+16sm,2n=2x=58=44m+12sm+2st and 2n=2x=58=32m+26sm, respectively. The composition of relative chromosome length was: L. jaluensis - 2n=58=2L+20M₂+30M₁+6S, L. mongolia - 2n=58=28M₂+28M₁+2S, and L. intermedia - 2n=58=2L+28M₂+26M₁+2S. The chromosome numbers and karyotypes of the three Ligularia species tested are reported for the first time.

中图分类号:

Q949.783.5

董然,瞿小杰,王丽清,刘洪章. 长白山3种橐吾的核型研究[J]. 草业学报, 2010, 19(4): 259-263.

DONG Ran, QU Xiao-jie, WANG Li-qing, LIU Hong-zhang. Karyotype studies on three Ligularia of Changbai Mountain[J]. Acta Prataculturae Sinica, 2010, 19(4): 259-263.

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长白山3种橐吾的核型研究

Karyotype studies on three Ligularia of Changbai Mountain

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