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Variability for resistance to fall armyworm in Guadeloupe among maize populations improved for resistance to various insects

By: Welcker, C | Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico).
Contributor(s): Clavel, D [coaut.] | Felicite, F [coaut.] | Gilet, J.D [coaut.] | Guinet, I [coaut.] | Mihm, J.A [ed.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Mexico, DF (Mexico) CIMMYT : 1997ISBN: 968-6923-79-9.Subject(s): Breeding methods | Genotype environment interaction AGROVOC | Germplasm | Pest insects | Pest resistance | Selection | Spodoptera frugiperda | CIMMYT | Zea mays AGROVOCDDC classification: 633.153 Summary: Insect pests are one of the main constraints to the development and farming of maize in the Caribbean. INRA CIRAD breeding efforts for well adapted maize populations with effective levels of resistance should contribute to the improvement of yield and yield stability. Screening of various insect resistant improved materials for resistance to fall armyworm, Spodoptera frugiperda (J.E. Smith) and for other characters with agronomical interest was undertaken. Multiple resistance has been observed in introduced (MIRT, TZBR) and local (PopG, Spectral) populations. The results show the high level of resistance of MpSWCB4 and ANTIGUA Gpo2, but also their low productivity. Advanced cycles, obtained through a recurrent S1 selection scheme, of a local improved population (PopG) show an intermediate level of resistance similar to FAWCC's, but are associated with high adaptability. A study of the variability within these populations and transfer of resistance to high yielding populations was initiated. The interest of this variability and its utilization in selection are discussed.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 1I623915
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Insect pests are one of the main constraints to the development and farming of maize in the Caribbean. INRA CIRAD breeding efforts for well adapted maize populations with effective levels of resistance should contribute to the improvement of yield and yield stability. Screening of various insect resistant improved materials for resistance to fall armyworm, Spodoptera frugiperda (J.E. Smith) and for other characters with agronomical interest was undertaken. Multiple resistance has been observed in introduced (MIRT, TZBR) and local (PopG, Spectral) populations. The results show the high level of resistance of MpSWCB4 and ANTIGUA Gpo2, but also their low productivity. Advanced cycles, obtained through a recurrent S1 selection scheme, of a local improved population (PopG) show an intermediate level of resistance similar to FAWCC's, but are associated with high adaptability. A study of the variability within these populations and transfer of resistance to high yielding populations was initiated. The interest of this variability and its utilization in selection are discussed.

English

9711|AGRIS 9702

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.
Lunes –Viernes 9:00 am. 17:00 pm. Si tiene cualquier pregunta, contáctenos a CIMMYT-Knowledge-Center@cgiar.org