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用RAPD标记研究对虾属六个种间的亲缘关系
引用本文:宋林生,樊拥军.用RAPD标记研究对虾属六个种间的亲缘关系[J].动物学报,1998,44(3):353-359.
作者姓名:宋林生  樊拥军
作者单位:[1]中国科学院海洋研究所 [2]南开大学生物学系
摘    要:用RAPD技术对对虾属中六种对虾基因组DNA的多态性进行研究。在事先优化的反应条件下用20个随机引物扩增,共得到364条清晰稳定的多态性片段,片段长度在230 ̄2800bp之间。统计这些片段,根据扩增片段的共享度计算出相对遗传距离指数,然后用UPGMA和NJ等聚类方法对其进行分析,构建系统树,确定了它们相互间的亲缘关系。从聚类分析的结果可以看到,外部形态比较相似的种类在基因组DNA上表现出较大的相

关 键 词:RAPD  对虾属  亲缘关系  种间关系

STUDIES ON GENETIC VARIATION AND PHYLOGENETIC RELATIONSHIPS AMONG SIX SPECIES OF PENAEUS GENUS BY RAPD MARKERS
SONG Lin,Sheng,XIANG Jian,Hai,LI Chen,Xi,ZHOU Lin,Hua,LIU Rui,Yu.STUDIES ON GENETIC VARIATION AND PHYLOGENETIC RELATIONSHIPS AMONG SIX SPECIES OF PENAEUS GENUS BY RAPD MARKERS[J].Acta Zoologica Sinica,1998,44(3):353-359.
Authors:SONG Lin  Sheng  XIANG Jian  Hai  LI Chen  Xi  ZHOU Lin  Hua  LIU Rui  Yu
Abstract:Random amplified polymorphic DNA (RAPD) technique was applied to assess the genetic variations among six species in the genus Penaeus. Amplifications with 20 primers under predetermined optimal reaction conditions gave 364 reproducible fragments ranging from 230 to 2 800bp. The amplified products were scored as present (1) or absent (0) for each DNA sample and an index of genetic similarity (F) was calculated. The value of (1 F) was used to evaluate genetic distances between species and a phylogenetic tree was constructed. From these results, we find that the species with similar morphological characters share a higher similarity on genomic DNA.Otherwise, the similarity is lower.
Keywords:RAPD    Penaeus    Phylogenetic relationship
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