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Occurrence of entomopathogenic fungi and aphilinid parasitoids infecting cereal aphids in Kenya

By: Wanjama, J.K | Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Addis Ababa (Ethiopia).
Contributor(s): Arama, P.F [coaut.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Addis Ababa (Ethiopia) CIMMYT : 1999ISBN: 92-9146-058-3.Subject(s): Aphids | Infection | Kenya | Parasitoids | Pathogens | Pests of plants | Plant diseases | CIMMYTSummary: Entomopathogenic fungi were found infecting the rose grain aphid, Metopolophium dirhodum, on wheat grown at the National Plant Breeding Research Center, Njoro in 1997. The fungi were identified at the Small Grain Research Institute, South Africa as Pandora neoaphidis (Remaudiere and Hennebert) Humber, and Entomophthora planchoniana Cornu. Three wheat and barley growing regions in Kenya were surveyed for aphid cadavers and mummies for isolation and characterization of entomopathogenic fungi. An experiment at Njoro and Timau evaluated the percentage of aphids naturally infected by entomopathogenic fungi on a commercial cereal crop. The percentage aphid mortality was 5.6 -9.7% in Timau and 25.6 -44.4% in Njoro. In addition, samples of bird cherry aphid, Rhopalosiphum padi, mummies collected from barley grown in a greenhouse at Njoro were sent to the Plant Protection Research Institute, South Africa. The pupae that emerged were a hyperparasitoid, Aphidencertus africanus. This hyperparasitoid was observed to cause up to 100% mortality on R. padi in the greenhouse.Collection: CIMMYT Publications Collection
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Conference proceedings CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Publications Collection Look under series title (Browse shelf) 1 Available 1N629146
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Entomopathogenic fungi were found infecting the rose grain aphid, Metopolophium dirhodum, on wheat grown at the National Plant Breeding Research Center, Njoro in 1997. The fungi were identified at the Small Grain Research Institute, South Africa as Pandora neoaphidis (Remaudiere and Hennebert) Humber, and Entomophthora planchoniana Cornu. Three wheat and barley growing regions in Kenya were surveyed for aphid cadavers and mummies for isolation and characterization of entomopathogenic fungi. An experiment at Njoro and Timau evaluated the percentage of aphids naturally infected by entomopathogenic fungi on a commercial cereal crop. The percentage aphid mortality was 5.6 -9.7% in Timau and 25.6 -44.4% in Njoro. In addition, samples of bird cherry aphid, Rhopalosiphum padi, mummies collected from barley grown in a greenhouse at Njoro were sent to the Plant Protection Research Institute, South Africa. The pupae that emerged were a hyperparasitoid, Aphidencertus africanus. This hyperparasitoid was observed to cause up to 100% mortality on R. padi in the greenhouse.

English

0007|AGRIS 0101|AL-Wheat Program

Jose Juan Caballero

CIMMYT Publications Collection

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Centro Internacional de Mejoramiento de Maíz y Trigo (CIMMYT) © Copyright 2015. Carretera México-Veracruz. Km. 45, El Batán, Texcoco, México, C.P. 56237.
Si tiene cualquier pregunta, contáctenos a CIMMYT-Knowledge-Center@cgiar.org