芸薹属重要作物的比较基因组研究进展

从比较基因组学的概念和内容、芸薹属重要作物的比较遗传作图、比较QTL定位等方面阐述了各物种间基因组的共线性关系、染色体内和染色体间的同源性、重要性状基因在QTL区域的映射,对芸薹属作物分子育种改良等方面的研究进行了展望.

Advances in Comparative Genomic Research of Important Species in Brassica Crops

As the genome squences of Brassica rapa and Arabidopsis thaliana were released,the comparative research between species has been a focus in plant genomic research.A significant focus of comparative mapping in the Brassicaceae has been within the agronomical important species of the Brassica genera and between the Brassica crops and their well-characterized relative Arabidopsis thaliana.that explain the observed levels of gene duplication within the genomes.Amounts of researches in plant genome organization have benefited greatly from the application of comparative genetic mapping,which allows both the elucidation of chromosomal rearrangements resulting from speciation and the ability to transfer information and resources between species.The correspondence between the A.thaliana and Brassica genomic regions is being exploited to QTL tagging,fine mapping,identifing and cloning genes for economically valuable traits.