Chromosome numbers, karyotypes, and polyploidy evolution of Anaphalis species (Asteraceae: Gnaphalieae) from the Hengduan Mountains, SW China
Meng, Ying1,2,3,4; Yang, Yong-Ping3,4; Sun, Hang3; Deng, Tao3; Nie, Ze-Long1,2,3; Nie,ZL (reprint author),Jishou Univ,Key Lab Plant Resources Conservat & Utilizat,Jishou,Hunan,Peoples R China.; niezl@mail.kib.ac.cn
2014-09-01
发表期刊CARYOLOGIA
ISSN0008-7114
卷号67期号:3页码:238-249
摘要

The chromosome numbers and karyomorphology of 32 accessions are examined, representing 12 species of Anaphalis DC. (Asteraceae) from the Hengduan Mountains of south-western China, which is most likely the biologically richest temperate region in the world. A total of 11 species are newly reported, and the highest chromosome number, 2n = 84, was observed in the Helichrysum-Anaphalis-Pseudognaphalium group for the first time. Within Anaphalis, the basic number x = 14 was confirmed. Only two species (A. flavescens and A. pachylaena) are diploid with 2n = 28. Tetraploidy is observed in seven species. Diploid-polyploid complexes are found in A. aureopunctata, A. bicolor, and A. nepalensis, especially for A. nepalensis with a series of polyploidy levels from di-, tetra-, to hexaploid. In addition to the tetraploid origin of the genus, a second polyploidisation is suggested as the predominant event in the chromosome evolution of Anaphalis from the Hengduan Mountains. The karyotypes of all observed samples are 2A or 2B, except for one population of A. bicolor as 1B according to Stebbins' asymmetry classification of karyotypes. The asymmetry index (AI) values change from 1.49 to 3.65. However, there is no evidence of association between chromosome evolution (i.e. polyploidy frequency and karyotype variation) and the altitudes in Anaphalis.

关键词Anaphalis Asteraceae Chromosome Number Gnaphalieae Hengduan Mountains Polyploidy
资助信息JSPS [21404009, 25303010]; JSPS [21404009, 25303010]
收录类别SCI
语种英语
引用统计
文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/18449
专题中国科学院东亚植物多样性与生物地理学重点实验室
通讯作者Nie,ZL (reprint author),Jishou Univ,Key Lab Plant Resources Conservat & Utilizat,Jishou,Hunan,Peoples R China.; niezl@mail.kib.ac.cn
作者单位1.Jishou Univ, Key Lab Plant Resources Conservat & Utilizat, Jishou, Hunan, Peoples R China
2.Jishou Univ, Coll Biol & Environm Sci, Jishou, Hunan, Peoples R China
3.Chinese Acad Sci, Key Lab Plant Div & Biogeog East Asia, Kunming, Yunnan, Peoples R China
4.Chinese Acad Sci, Kunming Inst Bot, Germplasm Bank Wild Species Southwest China, Plant Germplasm & Genom Ctr, Kunming, Yunnan, Peoples R China
推荐引用方式
GB/T 7714
Meng, Ying,Yang, Yong-Ping,Sun, Hang,et al. Chromosome numbers, karyotypes, and polyploidy evolution of Anaphalis species (Asteraceae: Gnaphalieae) from the Hengduan Mountains, SW China[J]. CARYOLOGIA,2014,67(3):238-249.
APA Meng, Ying.,Yang, Yong-Ping.,Sun, Hang.,Deng, Tao.,Nie, Ze-Long.,...&niezl@mail.kib.ac.cn.(2014).Chromosome numbers, karyotypes, and polyploidy evolution of Anaphalis species (Asteraceae: Gnaphalieae) from the Hengduan Mountains, SW China.CARYOLOGIA,67(3),238-249.
MLA Meng, Ying,et al."Chromosome numbers, karyotypes, and polyploidy evolution of Anaphalis species (Asteraceae: Gnaphalieae) from the Hengduan Mountains, SW China".CARYOLOGIA 67.3(2014):238-249.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
0144235X.2014.pdf(1216KB)期刊论文出版稿开放获取CC BY-NC-SA请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Meng, Ying]的文章
[Yang, Yong-Ping]的文章
[Sun, Hang]的文章
百度学术
百度学术中相似的文章
[Meng, Ying]的文章
[Yang, Yong-Ping]的文章
[Sun, Hang]的文章
必应学术
必应学术中相似的文章
[Meng, Ying]的文章
[Yang, Yong-Ping]的文章
[Sun, Hang]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。