Figure 1

Frequency distribution of accessions of Brassica napus plotted against clubroot severity (disease severity index, DSI) for pathotypes (a) 5X, (b) 2B, (c) 3A, and (d) 3D.

Frequency distribution of accessions of Brassica napus plotted against clubroot severity (disease severity index, DSI) for pathotypes (a) 5X, (b) 2B, (c) 3A, and (d) 3D.