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African Crop Science Journal
African Crop Science Society
ISSN: 1021-9730 EISSN: 1021-9730
Vol. 3, No. 2, 1995, pp. 217-222
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Bioline Code: cs95029
Full paper language: English
Document type: Research Article
Document available free of charge
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African Crop Science Journal, Vol. 3, No. 2, 1995, pp. 217-222
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Integrating Biotechnological Approaches for the Control of Striga
Vogler, R.K.; Ejeta, G. & Butler, L.G.
Abstract
Our research addresses the Striga problem as a series of
interactions between the parasite and its hosts, with
potential for intervention. The working hypothesis is that the
intricate relations between Striga and its host can be
interrupted leading to development of control strategies.
Using this approach, key compounds involved in Striga
germination, and an effective bioassay for isolating sorghum
cultivars that are resistant to Striga has been developed.
This assay has been useful in establishing the mode of
inheritance for resistance against Striga, and has been used
to transfer the gene for low stimulant production into more
productive sorghum cultivars, and to map this gene in the
molecular linkage map of sorghum currently under construction.
In January 1995, eight high yielding Striga resistant
food-grain sorghum cultivars were released for wide use in
Striga-endemic areas of Africa. Plans are underway for a pilot
project between Purdue University, World Vision Relief and
Development Inc., and the United States Agency for
International Development (USAID) to increase and distribute
seed of these cultivars to farmers in ten African countries.
Keywords
Bioassay, Striga germination, stimulant production, sorghum, resistance
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fr |
Vogler, R.K.; Ejeta, G. & Butler, L.G.
Résumé
Notre recherche examine le probleme de Striga dans des series
d'interactions entre le parasite et ses hotes afin de pouvoir
intervenir l'hypothese de travail consiste a interrompre les
relations entre le Striga et son hote pour developper des
strategies de controle. Avec cette approche, des composantes
impliquees dans la germination du Striga et la technique de
bioassay permettant d'isoler les varietes resistances ont ete
mises au point. Le bioassay s'est avere utile dans
l'etablissement du mode d'heritabilite de la resistance au
Striga et le transfert du gene pour la faible stimulation de
la production dans les cultivars hautement productifs du
sorgho ainsi que dans le positionnement de ce gene dans le
lien moleculaire en construction en ce moment. En janvier 1995,
8 cultivars de sorgho a graines de haut rendement et
resistants au Striga etaient diffuses pour une large
utilisation dans les zones d'Afrique endemiques au striga. Un
projet pilote est en train d'etre monte entre l'Universite de
Purdue, le World Vision Relief and Development Inc, et I'USAID
pour multiplier et distribuer les semences de ces cultivars
aux agriculteurs de 10 pays africains.
Mots Clés
Bioassay, Germination de striga, stimulant de la production, sorgho, resistance
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© Copyright 1995 - African Crop Science Society
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