Genetic analysis of resistance to clubroot (Plasmodiophora brassicae) in Brassica oleracea. I. Analysis of symptom grades

The inheritance of resistance to clubroot, caused by Plasmodiophora brassicae, in Brassica oleracea was studied in the F1, F2and backcross progenies of four crosses between resistant and susceptible doubled haploid lines. The disease severity was scored visually on a 0–3 scale of symptom grades. These were analyzed qualitatively and quantitatively. The… (More)