Pathogenicity of the Fungus Verticillium lecanii to Aphids and Powdery Mildew

Autor:	R. R. Belanger, Y. Carriere, Hassan Askary, Jacques Brodeur
Rok vydání:	1998
Předmět:	Aphid biology Macrosiphum euphorbiae food and beverages Sporothrix Verticillium biology.organism_classification Horticulture Lecanicillium longisporum Insect Science Botany Macrosiphum Agronomy and Crop Science Sphaerotheca Powdery mildew
Zdroj:	Biocontrol Science and Technology. 8:23-32
ISSN:	1360-0478 0958-3157
Popis:	Aspects of the host specificity and pathogenicity of the hyphomycete, Verticillium lecanii , were investigated under laboratory conditions. DiVerences were observed in the pathogenicities of three strains of V. lecanii (DAOM 198499, DAOM 216596 and Vertalec) to the potato aphid Macrosiphum euphorbiae and Sphaerotheca fuliginea , the causal agent of cucumber powdery mildew. The estimated median lethal concentration required to achieve 50% mortality (LC ), 50 median lethal time leading to 50% mortality (LT ) and aphid net reproductive rate ( R ) 50 0 indicated that Vertalec and strain 198499 were more virulent to aphids than strain 216596. The estimated median colonization time for 50% of fungal colonies (CT ) showed that strain 50 198499 was the best antagonist of cucumber powdery mildew. Further comparison suggested that the mean pathogenicity of V. lecanii strain 198499 to cucumber powdery mildew was almost equivalent to that of Sporothrix flocculosa , a biological control agent of greenhouse fungal path...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ef06903da544d6d3de71df73ab962cee https://doi.org/10.1080/09583159830405 Zobrazit plný text záznamu