Searching of genes for tolerance to Striga in maize, Teocinte and Tripsacum
Grimanelli, D.
Searching of genes for tolerance to Striga in maize, Teocinte and Tripsacum - Addis Ababa (Ethiopia) CIMMYT|EARO : 1999 - p. 203 - Printed
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
92-9146-065-6
Disease resistance
Euchlaena mexicana
Genetic maps
Maize
Tripsacum
Zea mays
Genetics
CIMMYT
Searching of genes for tolerance to Striga in maize, Teocinte and Tripsacum - Addis Ababa (Ethiopia) CIMMYT|EARO : 1999 - p. 203 - Printed
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
92-9146-065-6
Disease resistance
Euchlaena mexicana
Genetic maps
Maize
Tripsacum
Zea mays
Genetics
CIMMYT