Comportamento de porta-enxertos de solanáceas silvestres ao parasitismo de Meloidogyne javanica

Abstract

The use of intensive vegetable production in greenhouse may increase the inoculum potential of pathogens inhabitants of soil, as the nematode of galls. Therefore, is important to perform studies aiming techniques and viable ways of management for the farmer and at the same time can allow crop even in contaminated areas. Thus, the aim was to evaluate the potential of solanaceous as rootstocks resistant to the nematode Meloidogyne javanica in tomato crop. The experiment consisted of seven treatments, the wild species Solanum capsicoides All., Solanum palinacanthum Dun., Solanum viarum Dun., Jurubeba access (Solanum spp.) and a commercial tomato 'Santa Cruz Kada', Batalha® and Guardião®. The plants were inoculated with a suspension containing 5,000 eggs of Meloidogyne javanica and the evaluations of these plants were at 60 days after inoculation. The variables analyzed were: gall index (IG); egg mass index (IMO); fnal nematode population (Pf); reproduction factor (FR) and reaction: susceptibility (S), resistance (R) and immunity (I); fresh shoot matter (MFA); fresh root matter (MFR) and number of eggs per root gram (NOGR). The wild species Solanum palinacanthum, Solanum capsicoides and jurubeba access (Solanum spp) were resistant, with a reproduction factor of 0.18; 0.05; 0.14 respectively, not differing significantly from the resistant control Guardião®, being a viable alternatives for resistant rootstocks for tomato crop.