Claude Welcker

Institut National de la Recherche Agronomique, INRA, Guadeloupe


The regional center of INRA (French National Institut for Agricultural Research) located in Guadeloupe is the only one center over 22 targeting on tropical agriculture research and development. It has a special vocation to contribute to the development of the Caribbean agriculture providing welcker.jpg (13724 Byte)basic knowledge, technology and training. The URPV research unit focuses on biological ressources characterization and optimized utilization for adaptation of food-crops to environmental constrains. C. Welcker is leader of the maize program. He is involved in research on adaptation of tropical maize to stress. The work mainly focuses on genetic resources enhancement and utilization. Recent results emphasize interest of native caribbean germplasm for breeding for insect resistance. He identified new multiple insects resistant source germplasm and developed and is transferring useful improved germplasm to farmers.

More recently involved in breeding for acid soil tolerance in maize, C. Welcker developed close collaborations with breeders of EMBRAPA, IRAD and CIMMYT within the frame of INCO1 project to quantitatively evaluate genetic progress for adaptation to soil acidity and to appreciate usefulness of tolerant source populations. However, he developed close co-operation with agronomists (H. Ozier-Lafontaine, Y.M. Cabidoche) focussing on characterization and modeling of root development and architecture to determine plant adaptative parameters to stress relevant as selection criteria.

C. Welcker participates to Caribbean and African regional fora (PROCICARIBE, CORAF…). He argues for the involvement of the farmers in selection process and for working under selection conditions that are, some where, the reflect of the reality of smallholders farmers fields.


Cabidoche Y.M., Van Oort F., (1991) : Problèmes posés par la caractérisation à l'échelle de la parcelle du statut cationique de sols feralitiques de la Guadeloupe in 25th annual meeting of CFCS, 1989, Gosier, INRA ed. : 294-309

Chauvin Luc, (1998) : Evaluation du progrès génétique pour l'adaptation du maïs aux sols acides tropicaux ; Mémoire ESAP, INRA Centre Antilles-Guyane : 73pp

Ozier-Lafontaine H., Lafolie F., Bruckler R., Tournebize R. and Mollier A., (1998) : Modelling root competition for water in midex crops. Theory and comparison with field experiments. Plant and Soil 204 : 183-201

Welcker C., Medina C.C., Guimaraes M.F., Bresse C., Fallavier P. (1996) : Response of maize cultivars in diferrent acid soil environments in Plant-Soil Interactions at low pH : sustainable agriculture and forestry production ; Moniz, Furlani, Schaffert, Fageria, Rosolem and Cantarella ed. ; Brazilian Soil Science Society : 240

Welcker C., Félicité J., Cinna J.P., Loudet O., Permuy Abeleira N., Garcia Sanchez E., (1997) : Interés y valorizacion de las variedades locales para el desarrollo sostenible de la produccion de maiz en el Caribe in Holguin dec. 1997-Cuba

Welcker C., Félicité J ., Cinna J.P., Giraudeau P., (1998) : Genetic variability among caribbean maize populations ; potential uses in breeding in PROCICARIBE, 1r meeting on Plant Genetic Ressources Network, sept. 1998-Barbados