Mapping of powdery mildew and leaf rust resistance genes on the wheat-rye translocated chromosome T1BL center dot 1RS using molecular and biochemicalmarkers

Powdery mildew and leaf rust resistance genes on the 1RS arm of the T1BL.1R S translocated chromosome were mapped in relation to the Sec-1 locus and AF LP and restriction fragment length polymorphism markers, respectively, empl oying segregating F-3 populations. Integration of molecular markers indicat ed that Pm17 lies between the Lr26 and Sec-1 loci, with both resistance gen es allocated distally to the Sec-1 locus in the satellite of the IRS arm.