Figure 1.

Spontaneous tumour formation in inbred radish lines: (a). taproots of related lines 19 (left) and 18 (right) contrasting in the tumour formation trait; (b). a family tree of the radish genetic collection showing the origin of the inbred lines; tumour lines 10, 11, 12, 13, 14, 16, 19, 20, 21, 32, 34 are marked in red; the squares indicate the intended progeny of each radish line. Different boxes represent lines of diverse cultivars. The sector that includes lines originating from the Saxa cultivar is highlighted in green.