ISHS Acta Horticulturae 487: VI International Symposium on Processing Tomato & Workshop on Irrigation & Fertigation of Processing Tomato
COMPARISON OF THE REPRODUCTION OF MELOIDOGYNE POPULATIONS ON ROOTS OF CROTALARIA SPECTABILIS AND PROCESSING TOMATO VARIETIES WITH THE MI GENE. |
| Authors: | G. Espárrago, J.M. Barreiro, C. Ruales |
| Keywords: | Meloidogyne. control, tomato, Crotalaria |
| Abstract:
Three Meloidogyne root-knot nematode populations - M. Tincognita (M), M. arenaria (B) and a mix of M. incognita and M. arenaria (T) - were compared, under greenhouse conditions, to know their parasitic behaviour in two tomato varieties for processing with the Mi gene for resistance and a leguminous plant specie. Crotalaria spectabilis, which has the characteristic of Meloidogyne antagonism. The susceptible tomato variety JUSTAR was included into the experiments as a control. Individualised plants were sown in pots and 4 weeks after sowing inoculated with a nematode egg suspension. The plants were grown in greenhouse for fifty days after inoculation. The three analysed root-knot nematode populations were able to reproduce over all tomato varieties and Crotalaria: females, J2 juveniles and eggs were recovered from plant roots and J2 juveniles from soils. No significant differences were found for these parameters between tomato varieties and Crotalaria (the control is not included). Crotalaria reduced reproduction of Meloidogyne, although it is not possible to assert that the reduction observed is more effective than the one observed with the use of resistant tomato varieties. | |
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