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应用AFLP技术对栉孔扇贝的中国长岛群体和韩国东部、西部群体进行了遗传多样性分析。实验表明 ,中国长岛群体的群体内遗传相似度最高 ,为 0 .675 4 ,韩国东部群体次之 ,为 0 .6714,韩国西部群体最低 ,为 0 .630 9;中国长岛群体与韩国东部、西部群体间的遗传距离分别为 0 .170 3和 0 .1786,韩国两群体间的遗传距离只有 0 .0 5 7。这一结果说明 ,长岛群体与韩国群体遗传差异较大 ,韩国两个群体遗传相似度较高 ,应视为同一个群体。本研究共获得 6个韩国两群体的共享特征标记 ,4个长岛群体的特异性标记 ,1个韩国西部群体所特有的标记 ,这些标记可以用于鉴定和区分这三个群体。为提高我国栉孔扇贝群体遗传多样性 ,以引进韩国西部群体为好。
AFLP technique was used to analyze the genetic diversity of Chlamys farreri populations in China and the eastern and western communities in South Korea. The experiment shows that the genetic similarity among the groups of Long Island in China is the highest, which is 0.676 4, followed by the eastern part of Korea at 0.6714 and the lowest at the western part of Korea at 0.630 9. The Long Island and China’s eastern and western parts of China The genetic distance between populations was 0 .1703 and 0 .1786, respectively. The genetic distance between the two populations in Korea was only 0.047. This result shows that there is a large genetic difference between the Long Island group and the South Korean group, and the two groups in South Korea have a high degree of genetic similarity and should be regarded as the same group. In this study, we obtained 6 shared signatures of two groups in South Korea, 4 specific markers of Long Island community and 1 unique markers of South Korean community. These markers can be used to identify and distinguish these three groups. In order to improve the genetic diversity of scallop population in China, it is better to introduce the western part of South Korea.