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	荒漠十字花科植物粗果庭芥的核型分析
其他题名	Karyotype Analysis of the Desert Cruciferous Plant Alyssum asycarpum Steph. ex Willd
	李玲; 赵恩峰; 曾幼玲
来源期刊	新疆农业科学
ISSN	1001-4330
出版年	2012
卷号	49 期号:12 页码:2276-2279
中文摘要	【目的】分析新疆荒漠十字花科植物粗果庭芥(Alyssum dasycarpum Steph. ex Willd.)的核型特征。【方法】以粗果庭芥根尖细胞为实验材料,采用常规压片法对细胞染色体数目、大小核型及倍性进行分析。【结果】该物种的染色体数目为2n =16,基数=8,二倍体;全部为中着丝粒染色体(m),染色体长度比为2.283,臂比>2的染色体比为0,核型公式为2n=2x= 16= 16m,染色体组型属Stebbins核型分类中的1B类型,不对称系数为57.07%,低于60%,对称性高;核型分析过程中,未观察到随体存在。【结论】推测粗果庭芥在系统演化上可能属于较原始的种类。
英文摘要	【Objective】To analyze the karyotype characteristics of cruciferous plant Alyssum dasycarpum Steph. ex Willd. from the desert area in Xinjiang.【Method】The somatic cells of root- tips from this species as experimental materials were used to observe the chromosome number, karyotype and ploidy characteristic by root - tip squashing method.【Result】The chromosome number is 2n=16; The basic chromosome number is confirmed to be x=8; And this species is diploid; All of them are metacentric (m) chromosomes; The ratio of the longest chromosome to the shortest chromosome (Lc/Sc) is 2.283; The percentage of chromosomes with arm ratio (P.C.A) >2 is 0; the karyotype formula of this species is 2n=2x=16=16m, which belongs to "lB" type of Stebbins karyotype classification; And the index of the karyotype asymmetry(As. K%) is 57.07% and is lower than 60%, so the karyotype symmetry of this species is higher; The satellite on the chromosome of this species is never found in the process of the karyotype analysis.【Conclusion】These results revealed karyotype of Alyssum dasycarpum is symmetrical to a higher degree, indicating that Alyssum dasy-carpum belongs to a relatively primitive type and relatively old or the original plant in evolutionary processes.
中文关键词	粗果庭芥 ; 染色体 ; 核型分析
英文关键词	Alyssum dasycarpum Steph. ex Willd Chromosome 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:4750513
来源机构	新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228787
作者单位	新疆大学生命科学与技术学院, 新疆生物资源基因工程重点实验室, 乌鲁木齐, 新疆 830046, 中国
推荐引用方式 GB/T 7714	李玲,赵恩峰,曾幼玲. 荒漠十字花科植物粗果庭芥的核型分析[J]. 新疆大学,2012,49(12):2276-2279.
APA	李玲,赵恩峰,&曾幼玲.(2012).荒漠十字花科植物粗果庭芥的核型分析.新疆农业科学,49(12),2276-2279.
MLA	李玲,et al."荒漠十字花科植物粗果庭芥的核型分析".新疆农业科学 49.12(2012):2276-2279.