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Root-knot nematodes (RKN),  Meloidogyne  spp., are important crop pests that cause severe losses in crop production worldwide, reducing both productivity and crop quality.  Meloidogyne chitwoodi  Golden, O'Bannon, Santo & Finley, 1980 is considered a quarantine organism by the European and Mediterranean Plant Protection Organization (EPPO) causing damage in tomato and potato crops. The development of nonchemical and sustainable management strategies to reduce nematode damage is crucial. The resistance of  Solanum linnaeanum  Hepper & P.-M.L. Jaeger and  S. sisymbriifolium  Lamarck cv. Sis 6001 to  M. chitwoodi  was evaluated based on gall index (GI), the Bridge & Page (1980) rating chart and reproduction factor (RF). Both plant species were resistant to  M. chitwoodi .  Solanum linnaeanum  had an average of 519 small root swellings/plant, with 45% adult nematodes inside the roots, all males.  Solanum sisymbriifolium  had GI ≤ 2 and RF ≤ 1 with a high percentage (69%) of nematodes inside the roots that did not develop beyond the sexually undifferentiated second-stage. The use of  S. linnaeanum  as a new source of resistance is a good alternative for the control of RKN in the quest to develop nonchemical and sustainable management strategies to protect crops.

Solanum linnaeanum and Solanum sisymbriifolium as a sustainable strategy for the management of Meloidogyne chitwoodi