DALMASSO , A.

Experiments were designed to analyze the relationships between the root-knot nematode Meloidogyne incognita and resistant tomato and pepper genotypes. From a natural avirulent isolate, near-isogenic nematode lineages were selected with virulence either against the tomato Mi resistance gene or the pepper Me3 resistance gene. Despite the drastic...

Concepts of tolerance and resistance of plants to nematodes are examined on the basis of the recent advances in biology and phytopathology. Accurate vocabulary is needed to progress more deeply in the analysis of the different processes involved. Parasitic relations depend on the genetical background of both the plant and the nematode, which...

Summary Reproduction of artificially selected near isogenic Meloidogyne incognita lineages virulent and avirulent against the Mi resistance gene of tomato was assessed on host and resistant lines and cultivars of pepper. Egg mass production following inoculation of individual potted seedlings with second‐stage juveniles was studied in...

Root-knot nematode resistance of F~ progeny of an intraspecific hybrid (Lycopersicon peruvianum var. glandulosum Acc. No. 126443 × L. peruvianum Acc. No. 270435), L. esculentum cv. Piersol (possessing resistance gene Mi), and L. esculentum cv. St. Pierre (susceptible) was compared. Resistance to 1) isolates of two Meloidogyne incognita...

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Amplified fragment length polymorphism (AFLP) analysis has been used to characterize 15 root‐knot nematode populations belonging to the three parthenogenetic species Meloidogyne arenaria , M. incognita and M. javanica. Sixteen primer combinations were used to generate AFLP patterns, with a total number of amplified fragments ranging from 872 to...

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