Cytological study on Kelloggia (Rubiaceae), an intercontinental disjunct genus between eastern Asia and western North America

doi:10.1007/s10265-006-0276-0

	Cytological study on Kelloggia (Rubiaceae), an intercontinental disjunct genus between eastern Asia and western North America
	Tu, Tie-Yao ; Sun, Hang; Bartholomew, Bruce ; Nie, Ze-Long
通讯作者	hsun@mail.kib.ac.cn
	2006-07-01
发表期刊	JOURNAL OF PLANT RESEARCH
ISSN	0918-9440
卷号	119 期号:4 页码:397-400
摘要	A cytological study was carried out for the first time on four populations of the only two species of Kelloggia (Rubiaceae), which occur disjunctly in eastern Asia (K. chinensis Franch.) and western North America (K. galioides Torr.). The consistent mitotic prophase chromosome condensation pattern and interphase nuclei type were determined for both species. The chromosome base number of the genus is suggested to be x = 11. The karyotype of 2n = 22 = 2x = 16m + 6sm was examined for both species. The karyotypical asymmetry of 1A and 2A was found in K. chinensis and K. galioides, respectively. According to the predominant evolutionary direction of karyotype asymmetry in angiosperms, K. galioides (2A) seems slightly more evolved than K. chinensis (1A). Our finding is consistent with the hypothesis of the Old World origin of Kelloggia based on molecular study.
关键词	Cytology Kelloggia Disjunction Eastern Asia Western North America
学科领域	Plant Sciences
DOI	10.1007/s10265-006-0276-0
收录类别	SCI
语种	英语
WOS记录号	WOS:000239544000014
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/2725
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
作者单位	1.Chinese Acad Sci, Kunming Inst Bot, Lab Biodivers & Biogeog, Kunming 650204, Yunnan, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing, Peoples R China 3.Calif Acad Sci, Dept Bot, San Francisco, CA 94118 USA
推荐引用方式 GB/T 7714	Tu, Tie-Yao,Sun, Hang,Bartholomew, Bruce,et al. Cytological study on Kelloggia (Rubiaceae), an intercontinental disjunct genus between eastern Asia and western North America[J]. JOURNAL OF PLANT RESEARCH,2006,119(4):397-400.
APA	Tu, Tie-Yao,Sun, Hang,Bartholomew, Bruce,&Nie, Ze-Long.(2006).Cytological study on Kelloggia (Rubiaceae), an intercontinental disjunct genus between eastern Asia and western North America.JOURNAL OF PLANT RESEARCH,119(4),397-400.
MLA	Tu, Tie-Yao,et al."Cytological study on Kelloggia (Rubiaceae), an intercontinental disjunct genus between eastern Asia and western North America".JOURNAL OF PLANT RESEARCH 119.4(2006):397-400.

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