内蒙古驼蹄瓣属植物与其近缘种霸王遗传多样性的比较研究

采用RAPD标记技术,对7种驼蹄瓣属(Zygophyllum L.)植物及其近缘种霸王(Sarcozygium xanthoxylon Bunge)种群的遗传多样性进行了研究比较。RAPD研究结果如下:16个随机引物共检测到不同分子量的125个RAPD标记,其中99条表现出多态性,占总数的79.20%;7种驼蹄瓣的PPB%多态位点比例介于43.2%—68.0%之间,Nei's(h)基因多样度指数介于0.1693—0.2541之间,Shannon's(I)信息多样性指数介于0.2488—0.3798之间,表现出较高的遗传多样性水平。霸王的PPB为70.4%,h为0.2570,I为0.4011,均高于驼蹄瓣属各个种,表现出更为丰富的遗传多样性。

Comparative Analysis of Genetic Diversity of Zygophyllum L. and its Related Congener Sarcozygium xanthoxylon Bunge in Inner Mongolia

Geneticdiversityof 7 species of ZygophyllumL.andSarcozygium xanthoxylonBunge were analyzed by RAPD markers.RAPD resultsof study were as follows: 16 guide-thing at random measures got 125 RAPD marksof different molecular weight.99(79.2%) of which were polymorphic.Theproportionsof PPBdiversity locationabout the seven kinds of Zygophyllum L.were between 43.2percent and 68percent.The indexes of Nei'sgenevaried degrees were between 0.1693 and 0.2541.The indexes ofShannon's information diversitywere between 0.2488 and 0.3798,which showed highgenetic diversity levels.The PPB、h and Iof SarcozygiumxanthoxylonBungewere 70.4%,0.2570 and 0.4011 respectively,which were all above the kinds of ZygophyllumL..That showed more rich genetic diversity.