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题名: A cyto-evolutional study of Campanumoea Blume (Campanulaceae) and a possible pathway for secondary karyotype formation
作者: Zhang, Yun-Feng1; Zhang, Chun-Yong1; Zhang, Ting2; Guan, Hui-Ling3; Yan, Sheng-Qi1
刊名: PLANT SYSTEMATICS AND EVOLUTION
关键词: Campanumoea Blume (Campanulaceae) ; Karyotypic formula ; Chromosomal segment rearrangement ; Autopolyploidization
英文摘要: Campanumoea is a small genus in the family Campanulaceae, with species divided into sections Campanumoea and Cyclocodon. Sixteen accessions from Campanumoea and related genera native to China were used to study their karyotype. The results showed that chromosome characteristics were different between the two sections. For Campanumoea, the karyotypic formula was 2n = 2X = 2m + 12sm + 2st = 16,3A and for Cyclocodon it was 2n = 2X = 6m + 12sm = 18,3B. These data, combined with chromosomal length characteristics, support the restoration of section Cyclocodon as a genus. However, the incorporation of section Campanumoea into Codonopsis requires more evidence. Comparison of chromosomal length and haploid set length revealed that chromosomal segment rearrangements occurred within sections of Campanumoea and between genera, with the difference within sections being greater than that between genera. Therefore, chromosomal segment rearrangements are present in Campanulaceae, implying that chromosomal segment rearrangement plays an important role in the evolution of diversity in Campanulaceae. By comparing the chromosomal characteristic in section Campanumoea and the genus Adenophora, we concluded that the secondary chromosome type such as n = 17, 18 would be derived by autopolyploidization of n = 9, and by chromosome fusion.
出版日期: 2010-03-01
卷号: 285, 期号:3-4, 页码:245-257
语种: 英语
收录类别: SCI
学科分类: Plant Sciences; Evolutionary Biology
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内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/11261
Appears in Collections:中国西南野生生物种质资源库_期刊论文

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作者单位: 1.Yunnan Normal Univ, Sch Biol Sci, Kunming 650092, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Peoples R China
3.Yunnan Normal Univ, Coll Energy Sources & Environm, Kunming 650092, Peoples R China

Recommended Citation:
Zhang, YF; Zhang, CY; Zhang, T; Guan, HL; Yan, SQ.A cyto-evolutional study of Campanumoea Blume (Campanulaceae) and a possible pathway for secondary karyotype formation,PLANT SYSTEMATICS AND EVOLUTION,2010,285(3-4):245-257
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