Karyological studies on the Sino-Himalayan genus, Cremanthodium (Asteraceae : Senecioneae)

NWIPB OpenIR

	Karyological studies on the Sino-Himalayan genus, Cremanthodium (Asteraceae : Senecioneae)
	Liu, JQ ; Liu, SW ; Ho, TN ; Lu, AM
	2001-02-01
发表期刊	BOTANICAL JOURNAL OF THE LINNEAN SOCIETY ; Liu JQ, Liu SW, Ho TN, Lu AM.Karyological studies on the Sino-Himalayan genus, Cremanthodium (Asteraceae : Senecioneae).BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,2001,135(2):107-112
摘要	Twenty-two populations of seven species of Cremanthodium from high altitude regions of western China were observed karyologically. C. ellisii, C. microglossum, C. brunneo-pilosum, C. stenoglossum, C. discoideum and C. lineare all had the same chromosome number of 2n=58 whereas C. humile had 2n=60. All chromosome numbers of these species are documented here for the first time. The basic number of x=30 is new for this genus. The karyotypes of all species belong to 2A type according to Stebbins' asymmetry classification of karyotypes. Two basic chromosome numbers, x=30 and x=29 in Cremanthodium, correspond exactly to two branching patterns in this genus, sympodial versus monopodial. The systematic and taxonomic statuses of the sympodial species need further study. The karyomorphological data provide no support to the sectional subdivision in Cremanthodium. (C) 2001 The Linnean Society of London.; Twenty-two populations of seven species of Cremanthodium from high altitude regions of western China were observed karyologically. C. ellisii, C. microglossum, C. brunneo-pilosum, C. stenoglossum, C. discoideum and C. lineare all had the same chromosome number of 2n=58 whereas C. humile had 2n=60. All chromosome numbers of these species are documented here for the first time. The basic number of x=30 is new for this genus. The karyotypes of all species belong to 2A type according to Stebbins' asymmetry classification of karyotypes. Two basic chromosome numbers, x=30 and x=29 in Cremanthodium, correspond exactly to two branching patterns in this genus, sympodial versus monopodial. The systematic and taxonomic statuses of the sympodial species need further study. The karyomorphological data provide no support to the sectional subdivision in Cremanthodium. (C) 2001 The Linnean Society of London.
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/55982
专题	中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Liu, JQ,Liu, SW,Ho, TN,et al. Karyological studies on the Sino-Himalayan genus, Cremanthodium (Asteraceae : Senecioneae)[J]. BOTANICAL JOURNAL OF THE LINNEAN SOCIETY, Liu JQ, Liu SW, Ho TN, Lu AM.Karyological studies on the Sino-Himalayan genus, Cremanthodium (Asteraceae : Senecioneae).BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,2001,135(2):107-112,2001.
APA	Liu, JQ,Liu, SW,Ho, TN,&Lu, AM.(2001).Karyological studies on the Sino-Himalayan genus, Cremanthodium (Asteraceae : Senecioneae).BOTANICAL JOURNAL OF THE LINNEAN SOCIETY.
MLA	Liu, JQ,et al."Karyological studies on the Sino-Himalayan genus, Cremanthodium (Asteraceae : Senecioneae)".BOTANICAL JOURNAL OF THE LINNEAN SOCIETY (2001).