An Expanded Host Range for the Muskmelon Pathogen Monosporascus cannonballus
1993; American Phytopathological Society; Volume: 77; Issue: 7 Linguagem: Inglês
10.1094/pd-77-0667
ISSN1943-7692
Autores Tópico(s)Plant Pathogens and Fungal Diseases
ResumoThe pathogenicity of Monosporascus cannonballus to nine cucurbit and eight noncucurbit species was evaluated in the greenhouse by direct seeding into infested soil. Six of the cucurbit species were also tested under simulated field conditions in artificially infested microplots. In the greenhouse, M. cannonballus was isolated from 70-100% of the cucumber, muskmelon, and watermelon plants and from 33-70% of the bean, corn, sorghum, and sugar beet plants 8-9 wk after planting. Perithecia of the fungus were observed on the roots of all cucurbits tested but only rarely on roots of noncucurbits. Discrete brownish lesions, general light discoloration, and necrosis were characteristic symptoms of cucurbit root infection
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