小麦抗叶锈基因的定位及分子标记研究进展

 利用抗病品种是减少小麦叶锈病造成产量损失的最经济有效的方法 ,了解和鉴定常用亲本和推广小麦品种的抗性基因是充分利用小麦对叶锈菌的遗传抗性的前提和首要任务。到目前为止 ,小麦中已发现有近 90个抗叶锈基因 ,其中 5 6个抗叶锈基因被正式命名 ,5 1个被定位 ,2 4个抗病基因被标记。由于叶锈菌的毒性变异造成抗病基因抗性不断“丧失” ,所以持续不断地研究、发现和标记抗叶锈基因是今后育种工作的一项长期而重要的内容

Advances in Localization and Molecular Markers of Wheat Leaf Rust Resistance Genes

Genetic resistance is the most economical method of reducing yield losses caused by wheat leaf rust. The identification and knowledge of the leaf rust resistance genes in commonly used parental germplasm and released cultivars become very important for utilizing the genetic resistance to wheat leaf rust fully. Up to date, about 90 leaf rust resistance genes have been found and 51 of which have been located and mapped to special chromosomes, and 56 have been given to official designation according to the standards set forth in the Catalogue of Gene Symbols for wheat. Twenty-four wheat leaf rust resistance genes have been developed for molecular markers. It is very important to continuously isolate, characterize, and map leaf rust resistance genes due to the resistance losses of the genes caused by the pathogen.