干旱区生态环境知识资源中心(Arid): 锦鸡儿属植物一些种类的染色体数目及核型研究

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	锦鸡儿属植物一些种类的染色体数目及核型研究
其他题名	The Chromosomes and Karyotypes of Some Species in Caragana from China
	常朝阳 1; 黎斌 2; 石福臣 1
ISSN	1673-5102
出版年	2009
卷号	29 期号:1 页码:18-24
中文摘要	报道了国产10种锦鸡儿的染色体数目,并对其中9种的核型进行了研究.这9个种的核型公式分别为:荒漠锦鸡儿(Caragana roborovskyi),2n=16=10m(2SAT)+6sm;川西锦鸡儿(C.erinacea),2n=16=10m+6sm;密叶锦鸡儿(C.densa),2n=16=10m(2SAT)+6sm;刺叶锦鸡儿(C.acanthophylla),2n=16=12m+4sm;柄荚锦鸡儿(C. stipitata),2n=16=10m+6sm;甘蒙锦鸡儿(C.opulens),2n=16=12m(2SAT)+4sm;白皮锦鸡儿(C.leuco-phloea),2n=32=22m(4SAT)+10sm;北疆锦鸡儿(C.camilli-schneideri),2n=32=20m(4SAT)+12sm;中亚锦鸡儿(C. tragacanthoides),2n=32=20m(2SAT)+10sm+2st+2B.白毛锦鸡儿(C.licentiana)2个居群的染色体数目均为2n=32,为四倍体.研究结果表明,锦鸡儿属的核型一般比较对称,核型上的特化往往与其形态上的特化相关联,但也有例外.从倍性水平上来看,二倍体类群多是一些羽状叶的种,在分布上倾向于亚洲东部其祖先分布区,而四倍体的种类多是一些假掌状叶的类群,分布于西部干旱生境中,在形态上也表现的较为特化.这也符合锦鸡儿属的演化趋势.
英文摘要	The chromosome number of 10 species and karyotypes of 9 species of them in the genus Caragana from China were analyzed in this paper, and the results are as follows; C. roborovskyi, 2n = 16 = 10m(2SAT) + 6sm; C. erinacea, 2n = 16 = 10m +6sm; C. densa, 2n = 16 = 10m(2SAT) +6sm; C. acanthophylla, 2n = 16= 12m+4sm; C. stipitata, 2n = 16 = 10m+6sm; C. opulens, 2n = 16 = 12m(2SAT) +4sm; C.leucophloea, 2n =32 =22m(4SAT) +10sm; C. camilli-schneideri, 2n =32 =20 m(4SAT) +12sm, C. tragacanthoides, 2n= 32 =20m(2SAT) +10sm +2st +2B. For two populations of C. licentiana, only chromosome numbers are re-ported here, both with 2n =4x =32, being tetraploid. From the results we inclined to suppose that the karyotype of chromosomes in Caragana is not so much differentiated, and if differentiated it always follows by some mor-phological characters. The diploid and tetraploid are the main ploidy level of this genus, with 2n = 16 (diploid) or 2n =32(tetraploid). Triploid was found only in C.sinica, and hexaploid was seen only in C. ussuriensis. Those species with diploid chromosomes mostly are pinnate-leaved, and are mainly distributed in Estern Asia where probably is the genus’ ancestral areal, but those species with tetraploid chromosomes are majorly with dig-itate leaflets, and incline to adapt to desert areas in Northwestern China.
中文关键词	锦鸡儿属 ; 染色体数目 ; 核型
英文关键词	Caragana chromosome number karyotype
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:3759761
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/224468
作者单位	1.东北林业大学, 森林植物生态学教育部重点实验室, 哈尔滨, 黑龙江 150040, 中国; 2.西北农林科技大学生命科学学院, 杨凌, 陕西 712100, 中国
推荐引用方式 GB/T 7714	常朝阳,黎斌,石福臣. 锦鸡儿属植物一些种类的染色体数目及核型研究[J]. 西北农林科技大学,2009,29(1):18-24.
APA	常朝阳,黎斌,&石福臣.(2009).锦鸡儿属植物一些种类的染色体数目及核型研究.,29(1),18-24.
MLA	常朝阳,et al."锦鸡儿属植物一些种类的染色体数目及核型研究".29.1(2009):18-24.