鹅观草(Roegneria kamoji)的染色体C带分析

Analysis on Chromosome C-banding of Roegneria kamoji

利用改良的 Giemsa C带技术 ,分析鹅观草 (Roegneria kamoji)的染色体 C带带型。结果鹅观草根尖细胞染色体数目为 42 ,其染色体的相对长度为 2 .99%～ 6 .89% ,臂比 1.0 0～ 1.6 7,Giem sa C带核型是 :2 n=6 x=42=40 m+2 M。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。认为

The Giemsa C banding analysis of Roegneria kamoji is carried out by using an improved C banding procedure The karyotype formula is 2n=6x=42=40 m+2 M The relative length of chromosome is 2 99% to 6 89%,the arm ratio is 1 00 to 1 67 The C banding patterns in number,size,dyeability and distribution among chromosomes are distinctively different The C banding pattern is regarded as a cytological marker of all chromosomes of R kamoji 