15种榛子种质的染色体核型分析  

Analysis of Karyotype on Fifteen Hazelnut Germplasms

作　　者：郭媛媛[1] 邢世岩[1] 马颖敏[1] 唐海霞[1] 韩克杰[1] 

机构地区：[1]山东农业大学林学院,山东泰安271018

出　　处：《园艺学报》2009年第1期27-32,共6页Acta Horticulturae Sinica

基　　金：山东省教委基金项目(J05K03);山东农业大学博士基金项目(ND200208)

摘　　要：采用普通压片法,以榛子叶芽为试材对其15个种质资源的核型进行了研究,结果表明榛子各种质染色体均为二倍体;核型可分为3种类型:2n=2x=22=22m、2n=2x=22=20m+2sm和2n=2x=22=16m+6sm;没有发现随体;所有种质染色体绝对长度平均值为1.50μm,属小染色体;除欧榛和7#为1A型,B-23为2B型外,其余种质皆为1B型。种质间核型具有很大的相似性。The karyotype of fifteen hazelnut germplasms was studied by method of squash with the young leaves. The results showed that all the chromosomes were diploid; The karyotypes were divided into three types, i.e. 2n=2x=22=22m type, 2n=2x=22=20m＋2sm type and 2n=2x=22=16m＋6sm type. There was no satellites found in the morphological observation of chromosomes ; The average of chromosome absolute length on fifteen hazelnut germplasms was 1.50μm, so it was small in size ; The karyotype of the fifteen hazelnut germplasms all belonged to 1B type except that of Corylus avellana L. and 7# which were 1A type and B-23 which was 2B type, respectively. There was great similarity of karyotype among the germplasms.

关 键 词：榛子 种质 染色体 二倍体 核型 

分 类 号：S664.4[农业科学—果树学]