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Efficacité, durabilité, productivité : la recherche du compromis - Cas du couple pomme de terre-nématode à kyste Globodera pallida

Abstract : Resistant varieties represent a cost effective and environmentally friendly means to control many pests. They are therefore used extensively as a crop protection strategy. Developing such resistant varieties to control potato cyst nematode Globodera pallida is of paramount interest, especially because of its quarantine status and the obligate management of infested fields. A good resistant variety is the result of the best trade-off between efficiency (against the widest range of the nematode populations), durability (as the variety must provide an efficient protection during repetitive cropping periods) and yield performance (in particular in the presence of nematodes). Presently, only one G. pallida resistant variety, Îledher, is registered in France. Its resistance comes from the related wild species Solanum vernei and the evaluation of its durability under laboratory conditions showed that only five nematode generations were sufficient to select virulent individuals. Our main goals are thus to identify among different related wild species of Solanum (Solanum vernei, S. sparsipilum and S. spegazzinii), new genotypes that can be used as resistant parents for future varieties that will present the best trade-off between efficiency, durabilty and agronomical characteristics and also be able to control the virulentpopulations selected on the variety Îledher, if ever they appeared in the fields.
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  • HAL Id : hal-02646089, version 1
  • PRODINRA : 172744

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Sylvain Fournet, Lionel Renault, Claudia Rouaux, Ronan Le Cointe, Jean-Paul Dantec, et al.. Efficacité, durabilité, productivité : la recherche du compromis - Cas du couple pomme de terre-nématode à kyste Globodera pallida. Innovations Agronomiques, INRAE, 2011, 15, pp.79-88. ⟨hal-02646089⟩

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