稻属叶绿体DNA限制性片段长度多态性

被引:3
作者
朱世华
王明全
汪向明
机构
[1] 宁波大学师范学院生物系!浙江宁波
[2] 不详
[3] 武汉大学生命科学学院遗传学系!湖北武汉
关键词
稻属; 李氏禾属; 叶绿体DNA; 限制性片段长度多态性; 遗传距离;
D O I
10.16819/j.1001-7216.1999.03.003
中图分类号
S511.101 [];
学科分类号
摘要
对稻属(oryza)的14个种和李氏禾属(Leersia)的2个种共138份材料进行了叶绿体DNA限制性片段长度多态性的分析。用内切酶EcoRI酶切、4个叶绿体DNA探针杂交,共发现1o种叶绿体DNA变异类型。在稻属各个种内没有观察到叶绿体DNA的变异,叶绿体DNA变异类型基本上以稻属的染色体组型水平划分,因此认为精属的叶绿体DNA在进化过程中变异程度很低。推测CCDD组的o.alta、o.grandiglumis和o.latifolia及CC组的o.officinals和o.eichingeri各有共同的原始祖先。遗传距离分析显示CC、CCDD、BBCC组之间亲缘关系很近,这3个组与EE组亲缘关系也较近。李氏禾属的2个种L.perrieri和L.tisseranti与稻属的遗传距离很远。
引用
收藏
页码:139 / 142
页数:4
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