虎眼万年青染色体的核型分析及B染色体研究  

Karyotype Analysis and B-Chromosomes Study of Ornithogalum caudatum

作　　者：李国泰 李春辉 Li Guotai Li Chunhui(College of Science, Tonghua Normal University, Tonghua, Jilin 134002)

机构地区：[1]通化师范学院生命科学学院,吉林通化134002

出　　处：《中国林副特产》2017年第5期30-32,共3页Forest By-product and Speciality in China

摘　　要：经过相关的B染色体和核型分析的研究在虎眼万年青的染色体方面,获得如下结果:虎眼万年青的染色体数为2n=18。虎眼万年青染色体数量稳定的常染色体共有18条而B染色体则有22-28条数目不等,并没有发现常染色体间的形态具有明显差异,部分表现成中着丝粒染色体另一部分表现成近中着丝粒染色体。总体染色体之间的相对长度差异最高在1.36,经过核型分析具体的核型公式为2n=18=4m+14sm+(22~28)Bs,属于较为对称的2A型核型公式。讨论了虎眼万年青的B染色体的大量存在与它的生理适应性的关系。Ornithogalumof chromosomes were studied and B chromosome karyotype analysis,the results are as follows：Ornithogalumchromosome number is 2n = 18.Within Ornithogalum genome contains 18 autosomes and a stable amount of 22 to 28,ranging from the number of B chromosomes,morphological differences between autosomal body is not obvious,as the centromere chromosome or near the centromere grain chromosomes.The longest and shortest chromosome relative length ratio of 1.36,karyotype formula is 2n=18=4m＋14sm＋（22-28）Bs,karyotype type is relatively symmetrical type 2A.This article also discusses the existence of a large number of B chromosomes Ornithogalumrelationship with its physiological adaptation.

关 键 词：虎眼万年青 核型分析 B染色体 

分 类 号：S682.36[农业科学—观赏园艺] Q243[农业科学—园艺学]