蓝萼香茶菜和益母草的染色体核型研究  

The Karyotype Study on Isodon japonica var.glaucocalyxand Leonurus japonicus

作　　者：金忠民[1] 沙伟[1] 

机构地区：[1]齐齐哈尔大学生命科学与工程学院,黑龙江齐齐哈尔161006

出　　处：《广西科学》2004年第1期78-80,共3页Guangxi Sciences

基　　金：齐齐哈尔市科技局计划项目

摘　　要：对产自中国黑龙江扎兰屯地区的蓝萼香茶菜 [Isodon japonica (Burm.f.) Hara var.glaucocalyx(Maxim.) Hara]和齐齐哈尔地区的益母草 (L eonurusjaponicus Houtt.)进行染色体观察和核型分析。蓝萼香茶菜染色体数目为 2 n=2 4 ,益母草染色体数目为 2 n=2 0。间期核 ,蓝萼香茶菜和益母草均为复杂染色体中心型。染色体核型公式分别为 K (2 n) =2 x=2 4 =2 M+18m +4sm和 K (2 n) =2 x=2 0 =6 m+14 sm,核型均为“2 A”型。染色体相对长度组成分别为 2 n=2 4 =2 L+8M2 +14 M1 和 2 n=2 0 =10 M2 +10 M1 。This paper deals with karyotype studies on Isodon japonica var.glaucocalyx and Leonurus japonicus from Zhalantun and Qiqihar city.The results showed that the diploid chromosome number of was 2n=24 and the Leonurus japonicus was 2n=20,agreeing with the previous report.The densely diffuse type in Isodon japonica var.glaucocalyx and Leonurus japonicus were showed in the interphase.Their karyotypes were formulated as K(2n)=2x=24=2M+18m+4sm in Isodon japonica var.glaucocalyx and K(2n)=2x=20=6m+14sm and belong to '2A' of stebbins karyotype symmetry.The chromosome composition of relative length were 2n=24=2L+8M 2+14M 1 and 2n=20=10M 2+10M 1.

关 键 词：蓝萼香茶菜 益母草 染色体数目 核型 

分 类 号：Q944.54[生物学—植物学]