Resistance in white cabbage to necrosis caused by turnip and cauliflower mosaic viruses and pepper-spot

Abstract

SUMMARY Cabbage accessions were screened for resistance to turnip mosaic (TuMV) and cauliflower mosaic (CaMV) viruses in glasshouse and field tests. None was immune to infection by either virus, but some were highly resistant to one or both viruses. TuMV induced severe necrotic lesions on the outer leaves of susceptible plants at harvest, and this was associated with severe internal necrosis in heads stored for 8 months at 0–1 °C. This correlation was not observed in CaMV infected plants. Pepper-spot necrosis was low in stored heads of some accessions but high in others.