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Horticultura Brasileira

Print version ISSN 0102-0536

Abstract

WILCKEN, Silvia Renata S et al. Reproduction of Meloidogyne spp. in rootstocks and cucumber hybrids. Hortic. Bras. [online]. 2010, vol.28, n.1, pp.120-123. ISSN 0102-0536.  http://dx.doi.org/10.1590/S0102-05362010000100023.

Grafting is an alternative technique often recommended for the cucumber crop in root-knot nematodes infested areas. This study aimed to determine the reproduction factor of Meloidogyne javanica and M. incognita race 2 on six rootstocks for cucumber (squash 'Menina Brasileira, pumpkim 'Exposição', 'Shelper', 'Tetsukabuto', 'B8-A Tetsukabuto' and 'Excite Ikki') and four cucumber (Cucumis sativus) Japanese type hybrids of ('Yoshinari', 'Kouki', 'Taisho' and 'Tsuyataro'). Two experiments were carried out in greenhouse, each one with a nematode specie. Each plot consisted of one plant per pot containing 2 liters of autoclaved soil. Nine days after the seedlings transplantation, each plant was inoculated with 5,000 eggs and second-stage juveniles (initial population - Pi) of M. javanica or M. incognita race 2. 'Rutgers' tomatoes were used as a standard for inoculum viability in both experiments. The experimental design was completely randomized with five replicates per treatment. Sixty days after inoculated, each plant was evaluated, when root fresh weight, total number of nematodes in the soil and in the roots (final population - Pf), nematodes number per gram of root and the reproduction factor of both Meloidogyne species (FR=Pf/Pi) were determined. All rootstocks and cucumber hybrids allowed the M. javanica and M. incognita race 2 multiplication, but, generally, reproduction factor values were greater in cucumbers than in rootstocks.

Keywords : Cucumis sativus; Meloidogyne javanica; Meloidogyne incognita; grafting.

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