A Cytological Study of Six Populations of Disporum cantoniense (Liliaceae)

Abstract

Abstract:

Disporum cantoniense (Lour.) Merr. is widely distributed in the area

from the Himalayas to Indonesia, via south China, Indo-China and Taiwan, es-

pecially in the various parts of Yunnan Province. In this paper, the karyotype vari-

ation of six populations of the apecies from southeastern, middle and

northwestern part of Yunnan are studied. The result shows that the chromosome

number of all the populations are 2n= 14.

The species was reported to have 2n= 16, 30 (Hasegawa 1932, Mehra and

Pathamia 1960, Kurosawa 1966, 1971, Tang et al. 1984) and 2n= 14 (Kurosawa

1971, Mehra and Sachdeva 1976a). 2n= 14, 2n= 16 and 2n=32 were observed in

the material from Taiwan (Chuang, et al. 1962, Chao, 1963, Hsu, 1971, 1972,

Chang, 1974). Based on the cytological study of D. megalanthum Wang et Tang

and seven other species in this genus reported by other authors, Hong and

Zhu (1990) consider that the basic number of this genus is x= 8, because species

with 2n= 16 was more than those with 2n= 14, despite some number variation of

chromosomes in this genus. Based on the results of the present paper, we consider

that x= 7 might be one of the basic numbers of this genus.

In the karyotypes studied here, the relative chromosome lengths and the ratio

of the longest/the shortest chromosomes of the six populations are rather approxi-

mate. Moreover, all the karyotypes belong to Stebbins’3B type. However,

karyotype variation was detected in these populations. The homologues of the

2nd, 3rd and 6th pair of chromosomes are different from each other, the numbers

and popsition of satellites are found very different, among the populations except

for the Lijiang population, the 1st, 2nd, 3rd or 4th pair of all the populations ex-

hibited heterozygosity. Although all the karyotypes belong to Stebbins ‘3B type,

the homologues were more regular in the Lijiang population than in the other

populations, and the most irregular in the Wenshan population, because it had

four pairs of heterozygous chromosomes.

Key words: Disporum cantoniense (Lour.) Merr., Population, karyotype variation

Gu Zhi-jian, Wang Li, Gong Xun, Xiao Tiao-jiang. A Cytological Study of Six Populations of Disporum cantoniense (Liliaceae)[J]. .

[1]	XU Liting, CHEN Weixiao, XU Chen, ZHANG Lulu, YAO Shimou. Study on age-friendly communities against the background of aging society: a case study of 4 communities in Nanjing City [J]. , 2020, 37(3): 424-431.
[2]	YANG Zhen, LEI Jun. Spatial-temporal distribution characteristics and simulation of population in the main urban area of Urumqi City from 1982 to 2010 [J]. , 2018, 35(4): 506-514.
[3]	XIONG Lin, ZHANG Pingyu, TAN Juntao, LIU Wenxin. Spatial-temporal coupling characteristics between population structure and economic development in Northeast China [J]. , 2017, 34(3): 342-350.
[4]	ZHAO Hanqing, XU Zuwei, ZHAO Haibo. Predictions of compositional mixing degree in two-component aggregation [J]. , 2017, 34(2): 204-209.
[5]	CHEN Tiantian, PENG Li, LIU Shaoquan, WANG Xuxi, XU Dingde. Relationships of relief degree of topography with population and economy in Hengduan mountain area based on GIS [J]. , 2016, 33(4): 505-512.
[6]	FU Qian, YANG Degang, ZHANG Xinhuan, XIA Fuqiang, WANG Fei. Time and space differentiation of relative carrying capacity of resources in Ili based on improved model [J]. , 2016, 33(2): 170-177.
[7]	HUO Jinwei, YANG Degang, WANG Fei, YANG Fan, ZHANG Wenbiao. Analysis of the relationship between population structure and CO₂ emissions in Xinjiang based on Granger causality and the ridge regression [J]. , 2015, 32(3): 333-341.
[8]	QIN Xian-hong YU Xiao-gan DUAN Xue-jun LI Hui TIAN Fang. The Spatial Structure and Evolution of the of the Education Quality of Population in China [J]. , 2008, 25(4): 471-478.
[9]	DU Guo-Ming, ZHANG Shu-Wen, ZHANG You-Quan. Analyzing scale effects of population density with Shenyang city as a case [J]. , 2007, 24(2): 186-192.
[10]	YANG Si-Quan, LIU Hua. Research in the Method of Population Estimation in Urban District Based on EO data [J]. , 2006, 23(4): 543-547.
[11]	SHENG Ru, XUAN WeiJian, SHENG ChengFa. Relationships Between Population, Longevity and Era: Based on a Chinese Family Tree [J]. , 2003, 20(3): 361-367.
[12]	ZHAO Tie-Qiao. Cladistic systematics and phylogenetic species [J]. , 2001, 39(5): 481-488.
[13]	GE Song, HONG De-Yuan. Biosystematic Studies on Adenophora potaninii Korsh. Complex (Campanulaceae) Ⅳ. Allozyme Variation and Differentiation [J]. , 1998, 36(6): 481-489.
[14]	YU Hong, HUANG Rui-Fu. Study on Karyotypical Variation and Differentiation in Populations of Pinus yunnanensis Franch. [J]. , 1998, 36(3): 222-231.
[15]	ZHAO Yi-Zhi, LI Su-Ying, CAO Rui, LIU Yun-Bo. The Analysis of Morphological Characters and a Taxonomic Revision on Panzerina anata (L.) Sojak Complex (Labiatae) [J]. , 1998, 36(3): 193-205.

A Cytological Study of Six Populations of Disporum cantoniense (Liliaceae)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments