YrQz, a stripe rust disease resistance gene was identified in a common wheat (Triticumaestivum L.) line Qz180. This resistance was controlled by a single dominant gene, which was confirmed bygenetic analysis of two 1:...YrQz, a stripe rust disease resistance gene was identified in a common wheat (Triticumaestivum L.) line Qz180. This resistance was controlled by a single dominant gene, which was confirmed bygenetic analysis of two 1:2 populations derived from the crosses using Qz180 and two susceptible parents(Mingxian 169 and WL1). Bulked segregant analysis using simple sequence repeat (SSR) and amplifiedfragment length polymorphism (AFLP) markers was conducted in order to map the chromosomal locationof YrQz. The results indicated that YrQzwas located on the long arm of wheat chromosome 2B and residedin a re,on flanked by two SSR loci Xgwm388and Xgwm526. Two AFLP markers P35M48(452) and P36M61(163) were closely linked to KrQz with the genetic distance of 3.4 cM and 4.1 cM, respectively. To ourknowledge, this is the first molecularly mapped stripe rust resistance gene on wheat chromosome 2B.展开更多
文摘YrQz, a stripe rust disease resistance gene was identified in a common wheat (Triticumaestivum L.) line Qz180. This resistance was controlled by a single dominant gene, which was confirmed bygenetic analysis of two 1:2 populations derived from the crosses using Qz180 and two susceptible parents(Mingxian 169 and WL1). Bulked segregant analysis using simple sequence repeat (SSR) and amplifiedfragment length polymorphism (AFLP) markers was conducted in order to map the chromosomal locationof YrQz. The results indicated that YrQzwas located on the long arm of wheat chromosome 2B and residedin a re,on flanked by two SSR loci Xgwm388and Xgwm526. Two AFLP markers P35M48(452) and P36M61(163) were closely linked to KrQz with the genetic distance of 3.4 cM and 4.1 cM, respectively. To ourknowledge, this is the first molecularly mapped stripe rust resistance gene on wheat chromosome 2B.
