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Searching of genes for tolerance to Striga in maize, Teocinte and Tripsacum

By: Grimanelli, D | Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico).
Contributor(s): CIMMYT|EARO.
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Addis Ababa (Ethiopia) CIMMYT|EARO : 1999Description: p. 203.ISBN: 92-9146-065-6.Subject(s): Disease resistance | Euchlaena mexicana | Genetic maps | Maize | Tripsacum | CIMMYT | Zea mays AGROVOC | Genetics AGROVOCSummary: CIMMYT and several collaborators (KARI, the Weismann Institute, IITA) are involved in a multi-disciplinary project focussing on the control of Striga in maize. Among various activities, a biotechnology project has been initiated focussing on the identification and manipulation of sources of resistance within the wild relatives of maize. A representative sample of wild relatives of maize, including Zea perennis, Zea diploperennnnis, Zea Luxurians, several annual teocinte accessions (Zea mays, subspecies mexicana, parviglumis and huehuetenangensis) and some Tripsacum accessions have been evaluated in 1997 in Kenya under Striga infestation. Even though sources of resistance have been encountered in some of the Zea accessions, our first data suggest that (1) none of those are fully resistant to Striga, and (2) those partial resistances likely rely on a quite complex genetic regulation. By contrast, some of the Tripsacum entries showed an excellent level of resistance. Various strategies to identify and manipulate those sources of resistance are now being tested, including the isolation of the corresponding genes using maize transposable elements.Collection: CIMMYT Staff Publications Collection
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Conference proceedings CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Staff Publications Collection CIS-2685 (Browse shelf) 1 Available 649296
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Abstract only

CIMMYT and several collaborators (KARI, the Weismann Institute, IITA) are involved in a multi-disciplinary project focussing on the control of Striga in maize. Among various activities, a biotechnology project has been initiated focussing on the identification and manipulation of sources of resistance within the wild relatives of maize. A representative sample of wild relatives of maize, including Zea perennis, Zea diploperennnnis, Zea Luxurians, several annual teocinte accessions (Zea mays, subspecies mexicana, parviglumis and huehuetenangensis) and some Tripsacum accessions have been evaluated in 1997 in Kenya under Striga infestation. Even though sources of resistance have been encountered in some of the Zea accessions, our first data suggest that (1) none of those are fully resistant to Striga, and (2) those partial resistances likely rely on a quite complex genetic regulation. By contrast, some of the Tripsacum entries showed an excellent level of resistance. Various strategies to identify and manipulate those sources of resistance are now being tested, including the isolation of the corresponding genes using maize transposable elements.

English

0103|AL-ABC Program|AL-Maize Program|R99-00CIMPU|AGRIS 0102|AJ|3

Jose Juan Caballero

CIMMYT Staff Publications Collection

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