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Characterization of Phythophthora species from the American continent and the Caribbean that are pathogenic on cocoa

Herail C., Vezian K., Ducamp M.. 2003. In : 14th International Cocoa Research Conference, 13-18 October 2003, Accra, Ghana. Montpellier : Cirad, 1 p.. Conférence Internationale sur la Recherche Cacaoyère. 14, 2003-10-13/2003-10-18, Accra (Ghana).

Several species of Phytophthora cause cocoa (Theobroma cacao L.) black pod rot on the American continent. A study of ITS (internal Transcribed Spacer) sequences, a region of ribosomal DNA, led to taxonomic separation of the species P. palmivora, P. capsici cacao, P. tropicalis and P. citrophthora cacao. In order to fine-tune this species differentiation study, American strains of Phytophthora present in the CIRAD collection in Montpellier were characterized for their genetic diversity, mating type and certain physiological characteristics.

Mots-clés : theobroma cacao; phytophthora; phytophthora palmivora; phytophthora capsici; phytophthora citrophthora; marqueur génétique; séquence nucléotidique; adn; phytophthora tropicalis

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