Answers are grounded in this paper and cite their sources.
Resistance to black rot of cabbage ( Brassica oleracea L. Group capitata ), caused by Xanthomonas campestris pv. campestris in PI 436606, was conditioned by one recessive gene. The data suggested the occurrence of one or two modifying genes for tolerance to black rot in an unrelated line.
No takes yet. Share an insight, caveat, or question.
Dickson et al. (1987) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: