Tolerance of Solanum lycopersicum L. varieties to natural infestation by Meloidogyne spp. nematodes under controlled conditions in the district of Mocuba, Mozambique.
DOI:
https://doi.org/10.18406/2316-1817v18nunico20262117Keywords:
Solanum lycopersicum L. Root-knot nematode. Monitoring. Infestation.Abstract
The present study aimed to evaluate the level of tolerance of five tomato (Solanum lycopersicum L.) varieties naturally infested by nematodes of the genus Meloidogyne spp. under controlled conditions in the district of Mocuba, Mozambique. The experiment was conducted in two phases: the first in an experimental field and the second at the Laboratory of Microbiology, Phytopathology, and Agricultural Entomology of FEAF/Mocuba, where laboratory analyses were performed. A completely randomized design (CRD) was adopted, with five varieties and four replications per treatment. The following parameters were evaluated: identification of nematode genera and the most prevalent developmental stage; gall index; number of symptomatic leaves; stem diameter; plant height; and varietal yield. Statistical analyses were performed using STATISTIX 10 software, applying the Shapiro–Wilk test for residual normality, Levene’s test for homogeneity of variances, and Tukey’s test at a 5% probability level for mean comparisons. The results indicated a higher occurrence of Meloidogyne at the second juvenile stage (J2), whereas the genus Tylenchus showed lower frequency. The Cherry variety was considered immune, while the Rio Grande variety exhibited a low infection index, with a reduced number of galls and foliar symptoms, in addition to high yield under the edaphic conditions of the study area. Growth characteristics, such as plant height and stem diameter, did not show significant variation among varieties in relation to the observed level of infection.
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