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Factors affecting a laboratory bioassay for antibiosis: Influences of maize silks on the corn earworm and fall armyworm larvae

By: Wiseman, B.R | Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico).
Contributor(s): Mihm, J.A [ed.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Mexico, DF (Mexico) CIMMYT : 1997ISBN: 968-6923-79-9.Subject(s): Infestation | Pest control | Pest insects | Pest resistance | Plant growth substances | Plant physiology | CIMMYTDDC classification: 633.153 Summary: A useful laboratory bioassay has been developed to screen for resistance to lepidopterous insects attacking maize, Zea mays L., And over use in studying the antibiotic mechanism and bases of resistance to these insects. The bioassay may be used to detect minor as well as major differences between the resistant and susceptible maize cultivars. The bioassay has been used to study the influence of: the environment; pollinated vs. nonpollinated silks; ear position; age and type of silk; and callus tissue on expressions of antibiosis against the corn earworm (CEW), Helicoverpa zea (Boddie), or fall armyworm (FAW), Spodoptera frugiperda (J. E. Smith), larvae. Studies on some of the factors, such as temperature, diet and diet ingredients, and insect feeding responses, revealed interactions with the expressions of antibiosis. The bioassay has also been used in studies on the relationship between low larval weight with maysin content and the genetic and chemical bases of resistance in maize to CEW and FAW larvae.Collection: CIMMYT Publications Collection
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Conference proceedings CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Publications Collection 633.153 MIH (Browse shelf) 1 Available 1G623915
Total holds: 0

A useful laboratory bioassay has been developed to screen for resistance to lepidopterous insects attacking maize, Zea mays L., And over use in studying the antibiotic mechanism and bases of resistance to these insects. The bioassay may be used to detect minor as well as major differences between the resistant and susceptible maize cultivars. The bioassay has been used to study the influence of: the environment; pollinated vs. nonpollinated silks; ear position; age and type of silk; and callus tissue on expressions of antibiosis against the corn earworm (CEW), Helicoverpa zea (Boddie), or fall armyworm (FAW), Spodoptera frugiperda (J. E. Smith), larvae. Studies on some of the factors, such as temperature, diet and diet ingredients, and insect feeding responses, revealed interactions with the expressions of antibiosis. The bioassay has also been used in studies on the relationship between low larval weight with maysin content and the genetic and chemical bases of resistance in maize to CEW and FAW larvae.

English

9711|AGRIS 9702

Jose Juan Caballero

CIMMYT Publications Collection

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If you have any question, please contact us at CIMMYT-Knowledge-Center@cgiar.org

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