西藏野生谷子的核型分析  

KARYOTYPE ANALYSIS OF TIBETANUM WILD SETARIAITALICA BRAUV

作　　者：杨秀英[1,2] 杨其伟[1,2] 王雅儒[1,2] 宋燕春[1,2] 

机构地区：[1]天津师范大学生物系 [2]中国农科院作物品种资源研究所

出　　处：《天津师大学报（自然科学版）》1996年第4期50-57,共8页

基　　金："七五"攻关项目

摘　　要：核型分析表明，西藏野生谷子（１８７、１８９、１９０），栽培谷子北郊１２号以及北京野生狗尾草的染色体组成均为２ｎ＝１８＝１４ｍ＋２ｓｍ＋２ｓｔ（ＳＡＴ）．用去壁低渗火焰干燥法显示Ｃ－带，，即着丝点带和随体带．按照Ｓｔｅｂｂｉｎｓ的核型分类，１８７为２Ａ，其它四个材料为２Ｂ型．它们之间在染色体臂比。The results of karyotype analysis showed that tibetanum wild setaria italica (187,189,190),setaria (L)Beauv Beiliao 12 and Beijing setaria viridis(L)Beauv were almost the same according to the constitution of chromosomes:2n=18=14+2sm+2st(SAT). In this paper ,the wall degradation hyotonic method of preparing mitotic chromosome sample was used and the results showed that there were some marked bandings in centromere and satellite.According to the karyotypic classification method by Stebbins,187 beloned to 2B type.The other four belonged to 2A type.

关 键 词：西藏 野生谷子 核型 分类 染色体 谷子 

分 类 号：Q949.714.2[生物学—植物学]