Normal view MARC view ISBD view

Resistance of Bt maize to the asian corn borer (Lepidoptera: Pyralidae) in China

By: He, K | Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico, DF (Mexico) | Proceedings of the Asian Regional Maize Workshop Bangkok (Thailand) 5-8 Aug 2002.
Contributor(s): Srinivasan, G.|Zaidi, P.H.|Prasanna, B.M.|Gonzalez, F.|Lesnick, K [eds.] | Wang, Z [coaut.] | Wen, L [coaut.] | Zhou, D [coaut.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Mexico, DF (Mexico) CIMMYT : 2004Description: p. 19-26.ISBN: 970-648-116-8.Subject(s): Biological control | China | Lepidoptera | Maize | Ostrinia furnacalis | Pest insects | Protein content | Pyralidae | Transgenic plants | CIMMYT | Zea mays AGROVOCSummary: The Asian corn borer (ACB), Ostrinia furnacalis (Guenee), is the most important insect pest for maize in China. Despite consistent losses to ACB, farmers are reluctant to implement current integrated pest management (IPM) tactics because the cost and skill demand. Bt transgenic maize provides a new way for ACB control. Monsanto's YieldGard(r) of Bt transgenic maize, expressing CrylA(b) protein, and non-Bt control were evaluated in Beijing. Laboratory bioassays were carried out by exposing neonates to an agar-free diet containing Bt maize whorl leaves, tassel, and anther or directly to fresh silk and pollen. These are the tissues initially attacked by neonates in the field. All of them except pollen contained sufficient toxin protein to kill >95% of larvae within 7 day. Surviving larvae had also not grown beyond 1st instar and weighed <0.1 mg. Although the larvae feeding on Bt maize pollen were significantly smaller than those on non-Bt maize, there was no significant difference in mortality. Field trials were also conducted by artificial infestation with ACB at mid-whorl, VI7, and silking stages. Damage ratings and number of larvae survived per plant indicated that Bt maize was highly resistant to ACB. Therefore, YieldGard(r) offers potential for a season-long protection against first- and second- generation ACB.Collection: CIMMYT Publications Collection
Tags from this library: No tags from this library for this title. Log in to add tags.
    average rating: 0.0 (0 votes)
Item type Current location Collection Call number Copy number Status Date due Barcode Item holds
Conference proceedings CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Publications Collection Look under series title (Browse shelf) 1 Available B630601
Total holds: 0

The Asian corn borer (ACB), Ostrinia furnacalis (Guenee), is the most important insect pest for maize in China. Despite consistent losses to ACB, farmers are reluctant to implement current integrated pest management (IPM) tactics because the cost and skill demand. Bt transgenic maize provides a new way for ACB control. Monsanto's YieldGard(r) of Bt transgenic maize, expressing CrylA(b) protein, and non-Bt control were evaluated in Beijing. Laboratory bioassays were carried out by exposing neonates to an agar-free diet containing Bt maize whorl leaves, tassel, and anther or directly to fresh silk and pollen. These are the tissues initially attacked by neonates in the field. All of them except pollen contained sufficient toxin protein to kill >95% of larvae within 7 day. Surviving larvae had also not grown beyond 1st instar and weighed <0.1 mg. Although the larvae feeding on Bt maize pollen were significantly smaller than those on non-Bt maize, there was no significant difference in mortality. Field trials were also conducted by artificial infestation with ACB at mid-whorl, VI7, and silking stages. Damage ratings and number of larvae survived per plant indicated that Bt maize was highly resistant to ACB. Therefore, YieldGard(r) offers potential for a season-long protection against first- and second- generation ACB.

English

0501|AGRIS 0501|AL-Maize Program

Juan Carlos Mendieta

CIMMYT Publications Collection

There are no comments for this item.

Log in to your account to post a comment.
baner

International Maize and Wheat Improvement Center (CIMMYT) © Copyright 2015. Carretera México-Veracruz. Km. 45, El Batán, Texcoco, México, C.P. 56237.
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