Mycobiology.  2009 Jun;37(2):158-159.

Occurrence of Fruit Rot of Melon Caused by Sclerotium rolfsii in Korea

• Kwon JH
• Chi TT
• Park CS

Abstract

In 2007 to 2008, a fruit rot of Melon (Cucumis melo L.) caused by Sclerotium rolfsii occurred sporadically in a farmer's vinyl house in Jinju City. The symptoms started with watersoaking lesion and progressed into the rotting of the surface of fruit. White mycelial mats appeared on the lesion at the surface of the fruit and a number of sclerotia formed on the fruit near the soil line. The sclerotia were globoid in shape, 1~3 mm in size, and white to brown in color. The hyphal width was measured 3 to 8 microm. The optimum temperature for mycelial growth and sclerotia formation was 30 on PDA. Typical clamp connections were observed in hyphae of grown for 4 days on PDA. On the basis of symptoms, mycological characteristics and pathogenicity to the host plant, this fungus was identified as Sclerotium rolfsii Saccardo. This is the first report of the fruit rot of Melon caused by S. rolfsii in Korea.

Keyword

Cucumis melo; Fruit rot; Melon; Sclerotium rolfsii

MeSH Terms

Allyl Compounds
Cucumis melo
Cucurbitaceae
Fruit
Fungi
Humans
Hyphae
Korea
Plants
Soil
Sulfides
Allyl Compounds
Soil
Sulfides