凉山半细毛羊、山谷型藏绵羊Ag-NoRs带的比较研究  

CONPARING BANDED KARYOTYPES OF LIANGSHAN SEMIFINE-WOOL SHEEP AND TIBETAN SHEEP

作　　者：李小勤[1] 吴登俊[2] 陈圣偶[2] 

机构地区：[1]广西大学动物科技学院 [2]四川农业大学动物科技学院,四川雅安625014

出　　处：《四川大学学报（自然科学版）》2000年第S1期144-147,共4页Journal of Sichuan University(Natural Science Edition)

摘　　要：以凉山半细毛羊、山谷型藏绵羊为研究对象 ,以微量全血培养法制备染色体标本 ,再采用Ag 染色法获得染色体Ag NoRs带 ,结果发现 :凉山半细毛羊和山谷型藏绵羊的Ag NoRs位点除位于已见报道的 1p ,2 q ,3q ,No .4 ,No .2 5号染色体臂末端外 ,还分布在No .1,No .2号中着丝粒染色体臂上和另外一条端着丝粒常染色体臂上 .凉山半细毛羊、山谷型藏绵羊均有 2个银染位点与断裂位点一致 .银染位点联合在凉山半细毛羊及山谷型藏绵羊均有发现 .Four Liangshan semifine wool sheep and four Tibetan sheep were used to compare the karyotypes Ag banding techniques, which were employed on slides obtained from the peripheral blood cell culture. The result showed that the NoRs existed not only on the end of the 1p, 2q, 3q, No.4 and No.25 chromosomes but also on the arms of the No.1, No.2 and one telometric autosome (It wasn’t reported). Two NoRs loci of the two breeds were same as ...

关 键 词：绵羊 染色体 核型 AG-NORS带 

分 类 号：Q813.4[生物学—生物工程]