作　　者： ; ;

机构地区： 甘肃草原生态研究所

出　　处： 《草业科学》 2002年第3期35-38,共4页

摘　　要： 植物的迁徙和定居受人类活动的影响 ,确定种群在原发地和定居地的遗传变异及其成因 ,有助于理解生物多样性的格局和育种选择的实践。介绍了应用生物技术确定北美芥菜自欧洲迁来后遗传变异的实质 ,欧洲苏格兰松的地理起源和高极地孑遗区的范围。分子生物方法同大化石和孢粉证据结合可能较单一的方法更能全面的反映种或基因的系统进化过程和历史。 The pattern of plant immigration and introduction was mainly affected by human being activities. Understanding the genetic changes after population immigration or introduction and their traits could be help of breeding target selection. Examples of using particular molecular technique to analyze the genetic changes of Capsella bursa pastoris ,the geographic distribution of Pinus sylvestris in western Europe and molecular phylogeography of Drays intergrifolia were introduced. The molecular evidence together with both pollen and fossil data for determination of genetic change after population immigration could reveal more clear facts than the single technique.

关 键 词： 植被 分子生物技术 物种迁移 遗传变异 应用

领　　域： [生物学] [生物学]