鹅观草属模式种(Roegneria caucasica)的C带分析  

Analysis on chromosome C-banding Roegneria caucasica

作　　者：杨瑞武 周永红[2] 郑有良[2] 

机构地区：[1]四川农业大学基础部,四川雅安625014 [2]四川农业大学小麦研究所,四川都江堰611830

出　　处：《四川农业大学学报》2002年第2期78-80,122,共4页Journal of Sichuan Agricultural University

基　　金：四川省教育厅研究项目;四川省科技厅研究项目资助

摘　　要：利用改良的GiemsaC带技术 ,分析了鹅观草属模式种R .caucasica的染色体C带带型。R .caucasica的GiemsaC带核型是 :2n =4x =2 8=14m +14sm。不同染色体之间的C带带型在带的数量、大小、强弱及位置等方面存在明显差异 ,因此认为C带可作为R .caucasica染色体的细胞学标记。同时 ,对R .caucasica的St、Y染色体组C带带型与其它物种的St、Y染色体组C带带型的差异进行了讨论。The Giemsa C-banding analyses of Roegneria caucasica was carried out by using an improved C-banding procedure. The karyotype formulae is as follow: 2n=4x=28=14m+14sm. The C-banding patterns in number, size, dyeability and distribution among all chromosomes were distinctively different. So the C-banding pattern is a cytological marker of Roegneria caucasica. The C-banding diferences of St genome or Y genome in Roegneria caucasica between other species were discussed.

关 键 词：染色体 鹅观草属 模式种 C带分析 

分 类 号：Q949.714.2[生物学—植物学] Q943