Abstract: The present disclosure is in the field of plant breeding and disease resistance. The disclosure provides methods for breeding canola plants having clubroot resistance using marker-assisted selection. The disclosure further provides germplasm resistant to various Plasmodiophora brassicae pathotypes including pathogtype 5x. The disclosure also provides markers associated with clubroot resistance loci for introgressing these loci into elite germplasm in a breeding program, thus producing novel clubroot resistant germplasm, e.g., spring canola varieties resistant to pathogtype 5x.

Abstract: The present disclosure is in the field of plant breeding and disease resistance. The disclosure provides methods for breeding canola plants having clubroot resistance using marker-assisted selection. The disclosure further provides germplasm resistant to various Plasmodiophora brassicae pathotypes including pathogtype 5x. The disclosure also provides markers associated with clubroot resistance loci for introgressing these loci into elite germplasm in a breeding program, thus producing novel clubroot resistant germplasm, e.g., spring canola varieties resistant to pathogtype 5x.