Mycobiology.  2003 Jun;31(2):113-118.

Occurrence of Sclerotinia Rot in Solanaceous Crops Caused by Sclerotinia spp.

• Kim WG
• Cho WD

Abstract

Solanaceous crops grown in greenhouses and fields in Korea were surveyed from 1994 to 2000. Sclerotinia rot most severely occurred up to 60% in potato. Incidence of the disease was as high as 20% at its maximum in tomato and 5% in eggplant, but as low as less than 1% in red pepper. Symptoms of Sclerotinia rot commonly developed on stems of the solanaceous crops but rarely on fruits of eggplant and tomato. A total of 169 isolates of Sclerotinia species was obtained from the diseased solanaceous crops. Out of the isolates, 165 isolates were identified as S. sclerotiorum, and the others as S. minor based on their morphological and cultural characteristics. S. sclerotiorum was isolated from all the solanaceous crops, while S. minor was only isolated from tomato. Eight isolates of S. sclerotiorum and two isolates of S. minor were tested for their pathogenicity to the solanaceous crops by artificial inoculation. All the isolates of the two Sclerotinia spp. induced rot symptoms on stems of the solanaceous crops tested, which were similar to those observed in the fields. The pathogenicity tests revealed that there was no significant difference in the susceptibility of the solanaceous crops to the isolates of S. sclerotiorum. However, in case of S. minor, the potato cultivar Sumi was relatively less susceptible to the pathogen.

Keyword

Pathogenicity; Sclerotinia rot; Sclerotinia sclerotiorum; S. minor; Solanaceous crops

MeSH Terms

Ascomycota*
Capsicum
Cultural Characteristics
Fruit
Incidence
Korea
Lycopersicon esculentum
Solanum melongena
Solanum tuberosum
Virulence