国产猪牙花属植物的比较核型研究  

Comparative Karyotype Analyses of Erythronium Species in China

作　　者：殷根深[1] 翟书华[1] 刘开庆[2] 陈子牛[1] YIN Genshen;ZHAI Shuhua;LIU Kaiqing;CHEN Ziniu(Key Laboratory of Special Biological Resource Development and Utilization of Universities in Yunnan Province, Kunming University, Kunming, Yunnan 650214;Science Department, Kunming University, Kunming, Yunnan 650214)

机构地区：[1]昆明学院云南省高校特色生物资源开发与利用重点实验室,云南昆明650214 [2]昆明学院科研处,云南昆明650214

出　　处：《北方园艺》2018年第11期89-93,共5页Northern Horticulture

基　　金：云南省应用基础研究计划青年资助项目(2016FD107);云南省高校特色生物资源开发与利用重点实验室开放资助项目(GXKM201501)

摘　　要：以国产猪牙花属植物2个种(新疆猪牙花、猪牙花)以及外来栽培种(Erythronium dens-canis L.)为研究对象,采用比较核型分析方法,分析了猪牙花属4个样本(新疆猪牙花及Erythronium dens-canis L.各1个,猪牙花2个)的核型数据,以期探讨新疆猪牙花的染色体异基数性的起源机制。结果表明:与其它2个种不同之处在于,新疆猪牙花第1、2号染色体为中部着丝点染色体;在4个样本中,新疆猪牙花染色体间不对称性最大,染色体内不对称性最小,这些结果均支持丝粒并合可能是新疆猪牙花染色体异基数性起源的主要机制。Two domestic species of Erythronium L.（E.sibiricum,E.japonicum）and one exotic species（E.dens-canis L.）were used as research object.Using the method of karyotypic comparation,the karyotypes of four samples were investigated to trace the origin of dysploid of E.sibiricum.The results showed Ⅰ and Ⅱ chromosomes of E.sibiricum were metacentric chromosomes,and E.sibiricumhad the largest interchromosomal asymmetry but the least intrachromosomal asymmetry.All these results indicated that centric fusion was probably the main mechanism underlying the origin of dysploid in E.sibiricum.

关 键 词：新疆猪牙花 染色体异基数性 着丝粒并合 比较核型分析 

分 类 号：S68[农业科学—观赏园艺]