中文摘要：

作物育种的一个主要限制因素是各栽培种的遗传基础日趋狭窄，迫切需要从野生种质资源中导人优异等位基因。杂交障碍和连锁累赘降低了常规育种利用这些等位基因的效率。基因组研究的发展使得越来越多的植物基因的克隆成为可能。同源转基因就是将本物种或其近缘野生种克隆的优异等位基因导人到要改良的育种材料中。这不仅可以缩短育种的周期，而且不会有不良性状的连锁累赘。同源转基因和常规育种所要导入的目标基因的来源是相同的，因此育成的品种同样是安全的。如果转基因条例能够将同源转基因品种视同为常规育种品种，同源转基因将会成为人们利用野生资源进行作物改良的一种有效手段。

英文摘要：

A must to introgress ventional breeding major bottleneck of crop breeding is the narrow genetic base of cultivated species. It is a new beneficial alleles from wild germplasm. Due to crossing barrier and linkage drag, conisn＇t effective in use of these beneficial alleles. The rapid development of genomics enables the isolation of a number of plant genes in an easy way. Cisgenesis is a genetic modification approach to quickly transfer beneficial alleles from crossable species into elite cuhivars. This approach will not only speed up breeding breeding process but also avoid linkage drag. As the are the same, cultivars released by these two origins of target genes by cisgenesis and conventional approaches are same in safety. If regulators could treat cisgenic plants the same as conventionally bred plants, cisgenesis will become an effective tool of crop improvement in use of wild germplasm.