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小扁豆核型的比较分析
Comparative Analysis of Lens culinaris Medic. Karyotype
【摘要】 采用去壁低渗火焰干燥法制备小扁豆染色体标本观察其核型 ,结果表明 ,绿小扁豆和红小扁豆的核型公式均为 2n =2x =16 =6m +6sm +2st+2st(SAT) ,两种小扁豆的核型类型都是 3B ,染色体相对长度系数组成均为 2n =2x =16 =4L +6M2 +6M1+4S ,二者主要在第 7号染色体臂比和2号染色体大小方面有明显差异
【Abstract】 Karyotype analysis of two varieties of Lens culinaris Medic has been studied by means of preparing mitotic chromosome specimen and Giemsa staining technique.The results obtained showed that they have the same formula of 2n=2x=16=6m+6sm+2st+2st(SAT). They all have “3B” karyotype. They have the same chromosome relative length coefficient of 2n=2x=16=4L+6M 2+6M 1+4S. The obvious difference on arm ratio of the seventh chromosome and length of the second chromosome has been gained between the two varieties of Lens culinaris Medic.
【Key words】 Lens culinarisMedic; Chromosome; Karyotype; Satellite(SAT);
- 【文献出处】 华北农学报 ,ACTA AGRICULTURAE BOREALL—SINICA , 编辑部邮箱 ,2000年02期
- 【分类号】S643.5;Q243
- 【被引频次】1
- 【下载频次】62