林木分子标记研究进展

Advances in Tree Molecular Markers

分子标记技术大大促进了林木有关研究的发展。林木分子标记研究主要包括林木遗传连锁图谱构建、比较基因组研究、数量性状位点定位、标记辅助选择、系统演化及群体遗传变异和多样性等内容。迄今，已有近２０个树种构建了基因组遗传连锁图谱，少数树种还进行了比较基因组研究。定位了１０余个与分子标记连锁的数量性状位点，分子标记辅助选择育种已在少数树种中开展。分子标记是研究林木群体遗传结构和多样性水平的有用工具，也可用以阐明物种的系统进化和亲缘关系。

The application of molecular markers to related studies of forest trees has great merits to those fields that include construction of genetic linkage map,comparative genome mapping,QTL detecting, marker assisted selection (MAS),phyolgeny as well as population variation and bio diversity. Up to now,there were about 20 tree species which have been genetically mapped with molecular marker method,in which comparative studies of genomes have been carried out on several species. More than ten QTLs have been detected and MAS is ongoing on a few species. Molecular marker technology is also an important tool for estimating population genetic structure and diversity level,and identifying phylogenetic process and relatedness for a certain taxon of forest tree.