Abootorabi E (2023) The reaction of 32 tomato genotypes to root-knot nematode Meloidogyne javanica. Plant Pathology Science, 12(1):25-35.
Introduction: This research was conducted with the aim of determining the reaction of 32 tomato genotypes from the plant gene bank of Iran to the root-knot nematode Meloidogyne javanica, to identify resistant genotypes during two years under greenhouse conditions. Materials and Methods: After purifying the nematode population and planting the seeds of 32 tomato genotypes and reaching the stage of 3-4 leaves, each treatment was inoculated with 6000 eggs and larvae of M. javanica in five replicates, and 60 days after inoculation, vegetative traits and traits related to nematode population were determined in each treatment, and based on gall index (GI) and nematode reproductive factor (Rf), the reaction of genotypes to nematode was determined. Results: Eighteen genotypes with Rf>1 and GI>2, 23 genotypes with Rf<1 and GI>2, and three genotypes TN-72-938, TN-72-1041 and TN-72-1012 with Rf≤1 and GI≤2, were identified as susceptible, moderately resistant, and resistant to this destructive nematode respectively. Conclusion: These three resistant genotypes can be used in the M. javanica management program.
