Greenhouse eggplant production in France: Success and failures of grafting for controlling Verticillium sp.
Résumé
After many years of utilisation of grafting on Verticillium wilt resistant rootstocks, mainly tomato rootstocks, growers observe new wilt like symptoms on their grafted eggplants. Accordingly, Ctifl, in close collaboration with lNRA, regional extension services, and seed companies, set up a research designed to get a general picture of the various soil borne phytosanitary problems, and to identify their causees). The princip le of the study was to monitor pathogen distribution changes in eggplant crops in the two main production regions in France. The results show the prevalence of Verticillium wilt and, in the majority of cases and a1l production areas, the simultaneous presence of a number of other bioagressors, including fungi and nematodes. The isolates of Verticillium were identified at the species level (V. dahliae, V. isaacii) and characterized for their race (0 or 1) and their aggressiveness. Surprisingly, the aggressiveness ofmost isolates was relatively low. To our knowledge, this is the first report of V. isaacii in France, but its impact on production across France is unknown at this time.
Origine : Fichiers produits par l'(les) auteur(s)
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