Occurrence of Sclerotinia Rot in Four Leguminous Crops Caused by Sclerotiniasclerotiorum

다국어 초록 (Multilingual Abstract)

Four leguminous crops grown in greenhouses and fields
in Korea were surveyed from 2000 through 2002.
Sclerotinia rot most severely occurred up to 60% in
Phaseolus vulgaris grown in greenhouses but occurred
as low as 0-0.5% in that grown in fields. Incidence of the
disease in Pisum sativum grown in greenhouses ranged
1-5%, and that in Vicia fava and Vigna sinensis grown in
fields was 0.8% and 2%, respectively. Symptoms of
Sclerotinia rot commonly developed on stems and
pods of the crops. A total of 59 isolates of Sclerotinia
species were obtained from diseased stems and pods of
the crops. All of the isolates were identified as
Sclerotinia sclerotiorum based on their morphological
characteristics. Eight isolates of the fungus were tested
for their pathogenicity to four host crops by artificial
inoculation. All of the isolates induced rot symptoms on
stems of the host crops tested, which were similar to
those observed in the fields. The pathogenicity tests
revealed that there was no significant difference in the
susceptibility to the isolates among the leguminous
crops tested. This is the first formal report that S.
sclerotiorum causes the Sclerotinia rot of the four
leguminous crops in Korea.

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