中文摘要：

为了研究松材线虫在我国的群体遗传关系及传播路径，获得更为稳定的松材线虫分子标记，使用MISA软件对松材线虫全基因组10432条DNA片段进行搜索，共获得95个gSSR位点。其中，二核苷酸重复出现频率最高，占全部SSR位点的66？3％。依据所有gSSR位点共设计出36对引物，以1份松材线虫DNA pooling（包含我国46个不同地理来源的松材线虫虫株DNA）为模板进行PCR，产物由QIAxcel全自动凝胶电泳分析系统检测，获得17对可能具有多态性的gSSR引物。进一步对这17对引物的PCR产物进行单克隆试验并测序，BioEdit软件拼接比对结果表明，其中9对确实具有多态性。

英文摘要：

To develop more stable molecular marker, SSR marker base on pine wood nematode （ Bursaphelenchus xylo-philus） whole genome sequences was discussed for researching the relationship of population genetic and travel route ac-curately. Ninety-five SSR loci were searched from a total of 10 432 DNA fragments of B. xylophilus by MISA. In the gSSRs, the dinucleotide repeat motifs were the most abundant （66.3%）. Thirty-six pairs of primers were designed, and verified with one peace of B.xylophilus DNA pooling sample （46 DNA samples of isolates from different geographic origin contained） for PCR. The products detected by QIAxcellautomatic gel electrophoresis analysis system showed that 17 pairs of primers had potential polymorphism. Further, nine pairs of the primers showed polymorphism, which tested by mono-clonal sequencing and spliced by BioEdit, and which provided foundation for studying population genetic of B.xylophilus.