The stem rust resistance genes (SrR and Sr31) located
on the short arms of chromosome 1R of ‘Imperial’ and
‘Petkus’ rye, respectively, are effective against all current
Australian stem rust pathotypes. Recently developed
wheat-rye recombinant lines containing interstitial regions
of 1RS without the Sec-1 locus (Lukaszewski
2000; Shepherd 2001, personal communication) may
allow breeders to transfer stem rust resistance from rye
into adapted germplasm without possible quality defects.