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La tomate est largement produite en Cote d\'Ivoire. Malgre cette importance, sa production est soumise a de nombreuses contraintes dont les principales sont entre autres : la jaunisse en cuillere des feuilles, le fletrissement bacterien et les nematodes a galles. En vue d\'identifier des cultivars performants, une etude portant sur six cultivars ameliores de tomate a ete conduite dans la region de Toumodi (Cote d\'Ivoire). Elle s\'est deroulee sur deux cycles de production, l\'un en saison seche et l\'autre en saison des pluies. Les blocs de Fischer completement randomises ont ete adoptes. De maniere specifique, il s\'est agit, a partir de comptages simples, de determiner sur la parcelle apres apport d\'insecticides, les incidences du TYLCV, du fletrissement bacteriens et des nematodes a galles sur six cultivars de tomate d\'une part, et de mesurer le rendement potentiel de ces varietes comparativement a la variete Petomech cultivee en Cote d\'Ivoired\'autre part. La meilleure variete a produit 18 t.ha-1 contre 7 t.ha-1 en saison seche et 51 t.ha-1 contre 24 t.ha-1 respectivement pour les varietes testees et Petomech en saison des pluies. Les resultats obtenus ont permis la classification hierarchisee des differentes varietes, en fonction de leur origine, sur les deux cycles de production. Ainsi,les varietes d\'Israel sont plus performantes que celles de Taiwan qui elles-memes sont plus performantes que la variete Petomech. Tomato is widely produced in Cote d\'Ivoire. Nonetheless, tomato production faces several constraints then whose principal ones are among others diseases: the yellow leaf curl, bacterial wilt and root knot nematodes. In order to identify performants cultivars, six improved cultivars of tomato were tested in the Toumodi region (Cote d\'Ivoire). The trial was conducted over two production cycles; one in the dry season and the other one in the rainy season. The experimental design was based on the Fisher completely Randomized Blocks. Basically, we had to determine afterusing pesticides, the incidence of TYLCV, bacterial wilt and root knot nematodes on the six cultivars of tomato. We compared the potential yield of those varieties to that of the Petomech one. The best yield obtained is 18 t.ha-1 against 7 t.ha-1 in dry season and then, 51 t.ha-1 against 24 t.ha-1 in rainy season for the tested varieties and Petomechrespectively. The results obtained allowed us to make a hierarchical classification of the cultivars according to their origin over the two cycles of production. We concluded that, the varieties of Israel are more productive than those of Taiwan, which are in turn more preferment than the Petomech one. Keywords : Performance, tomate, jaunisse en cuillere, fletrissement bacterien, nematodes, Cote d\'Ivoire. Sciences & Nature Vol. 4 (2) 2007: pp. 123-130

sciences and nature. série a, biosciences agronomie environnement biotechnologie

Performance de six cultivars de tomates Lycopersicon esculentum Mills. contre la jaunisse en cuillère des feuilles, le flétrissement bactérien et les nématodes à galles.