The susceptibility of modern carrot cultivars to violet root rot caused by Helicobasidium purpureum

SummaryThree sites, known to be naturally infested with Helicobasidium purpureum, were used to test 54 carrot cultivars for resistance to violet root rot. Overall, there were no consistent significant differences in susceptibility. The inclusion in experimental plots of a marker cultivar to act as a standard for the comparison of cultivar susceptibility proved unsuccessful.