横断山及邻近地区风毛菊属三个种的核形态学

doi:10.3724 SP.J.1143.2008.07236

Plant Diversity ›› 2008, Vol. 30 ›› Issue (04): 433-436.DOI: 10.3724 SP.J.1143.2008.07236

横断山及邻近地区风毛菊属三个种的核形态学

岳学坤^{1 , 2} , 蔡金红¹ , 李志敏¹, 孙航²

1 云南师范大学生命科学学院, 云南昆明 650031; 2 中国科学院昆明植物研究所
生物多样性与生物地理学重点实验室, 云南昆明 650204

收稿日期:2007-10-12 出版日期:2008-08-25 发布日期:2008-08-25
通讯作者: 李志敏

Karyomorphology of the Three Species of Saussurea (Asteraceae) from Hengduan Mountians and the Adjacent Areas

YUE Xue-Kun^{1 , 2} , CAI Jin-Hong¹ , LI Zhi-Min¹, SUN Hang²

1 School of Life Science, Yunnan Normal University, Kunming 650031, China ; 2 Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China

Received:2007-10-12 Online:2008-08-25 Published:2008-08-25
Contact: LI Zhi-Min

摘要/Abstract

摘要： 对风毛菊属( Saussurea) 3 种植物进行了核形态学研究。昂头风毛菊( Saussurea sobarocephala) 核型公式为: 2n = 2x= 34 = 6m + 26sm+ 2st ; 弯齿风毛菊( Saussurea przewalskii ) 核型公式为: 2n = 2x = 32 = 12m + 14sm + 6st ; 三角叶风毛菊( Saussurea deltoidea) 核型公式为: 为: 2n = 2x = 34 = 26m + 8sm, 染色体数2n = 34与前人报道一致。3 种植物中, 除三角叶风毛菊的核型不对称性为1B 型外, 另两种的核型不对称性均属于3B 型。它们的间期核均为复杂染色体型, 前期染色体为中间型。

关键词: 染色体数目, 核形态学, 风毛菊属, 横断山区

Abstract: Chromosome numbers and karyotypes of three species from Saussurea (Asteraceae) , S . sobarocephala , S. przewalskii and S. deltoidea were studied. S. sobarocephala 2n = 2x = 34 = 6m + 26sm + 2st with type 3B asymmetry and S. przewalskii 2n = 2x = 32 = 12m+ 14sm + 6st with type 3B asymmetry were reported firstly. S. deltoidea 2n = 2x= 34 = 26m+ 8sm with type 1B was also confirmed. The interphase nuclei and prophase chromosomes of all these species were found to be of the complex chromosome type and interstitial type.

Key words: Chromosome number

中图分类号:

Q 942

岳学坤1 , 2 , 蔡金红1 , 李志敏1 , 孙航2 . 横断山及邻近地区风毛菊属三个种的核形态学[J]. Plant Diversity, 2008, 30(04): 433-436.

YUE Xue-Kun^, , CAI Jin-Hong , LI Zhi-Min, SUN Hang. Karyomorphology of the Three Species of Saussurea (Asteraceae) from Hengduan Mountians and the Adjacent Areas[J]. Plant Diversity, 2008, 30(04): 433-436.

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横断山及邻近地区风毛菊属三个种的核形态学

Karyomorphology of the Three Species of Saussurea (Asteraceae) from Hengduan Mountians and the Adjacent Areas

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