微卫星序列的长度多态性及在大豆研究中的应用

微卫星序列广泛存在于真核生物基因组中，不同的物种中微卫星序列的含量以及占优势的微卫星序列类型各不相同。微卫星序列在复制过程中易于发生长度突变，在进化过程中，微卫星序列的长度变化维持在一定的范围内。由于微卫星标记多态性高、重复性好，操作简单，因此在大豆遗传多样性、大豆遗传图谱构建、大豆QTL以及分子标记辅助育种研究等领域中都有着重要的应用价值。

The Evolution and Application of Microsatellites in Soybean

Microsatellites, simple sequence repeats(SSR), are abundant and distributed throughout the eukaryote genome. The contents of microsatellites are variant and dominant types of microsatellites are different in different organisms. One of the most noticeable characters of microsatellites is that they are easy to mutagenesis in DNA length during DNA replication, however, the length of SSR can be maintained under definately ranges during the evolution event. Due to many advantages such as abundant, highly polimorphic, codomintant, widely distributed in genome, microsatellites become very useful tools for soybean genetic diversity, soybean genetic map, soybean QTL and marker-assisted breeding.