Caracterización morfológica de las especies de nematodos fitoparásitos asociadas en el cultivo de tomate riñón (Lycopersicum esculentum Mill.) en la provincia de Cotopaxi cantón Salcedo

Abstract

The cultivation of tomato kidney (Lycopersicum esculentum Mill.) is limited by the effect of pests, diseases. So the current research aims to study the morphology of the genes of nematodes associated with tomato crops in the province of Cotopaxi, during the months of September, October, November and December 2017. The data extracts were made according to the phenological stages of the crop: vegetative development (22-50 days), flowering (51-80 days) and fruiting (81-100 days). By means of the centrifugation - flotation method that is the method of extraction of the nematodes from the soil, they were extracted, then the nematodes present were identified and quantified. The genera found were Cricomenoides, Telotylenchus, Tylenchus, Meloidogyne, Aphelenchus, Globodera, Trichodorus and Nacobbus. In the first stage (vegetative development) they present all genera Cricomenoides, Telotylenchus, Tylenchus, Meloidogyne, Aphelenchus, Globodera, Trichodorus and Nacobbus, in different sampling sites (Salache, Rumipamba and Patain) and in the second and third stages (flowering- fructification) present the same nematodes with the exception of Trichodorus