Abstract

PERAZA-PADILLA, Walter et al. Identificación morfológica, morfométrica y molecular de meloidogyne incognita en higuera (ficus carica l.) en Costa Rica. Agron. Mesoam [online]. 2013, vol.24, n.2, pp.337-346. ISSN 2215-3608.

Morphological, morphometrical and molecular identification of Meloidogyne incognita in fig (Ficus carica L.) in Costa Rica. The objective of this study was to identify species of Meloidogyne associated with two fig plantations in Costa Rica. On March 2012 in Pacayas, Cartago province, root-galls were found in two fig plantations of Ficus carica L. Females, egg-masses and juveniles (J2) of Meloidogyne sp. were extracted from the galled roots. Female perineal patterns were examined and second infective stages were analyzed morphometrically and molecularly by PCR-RFLP. The mitochondrial intergenic region (IGS) flanked by the cytochrome oxidase subunit II gene (COII) and the 16S ribosomal gene was amplified. The population was identified morphologically, morphometrically and molecularly as M. incognita. The PCR product obtained with primers C2F3 and 1108 were 1.7 kb in size. When PCR products were treated with restriction enzymes they generated four fragments of 850, 450, 250 and 150 bp with AluI and two fragments of 1300 and 400 bp with HinfI.

Keywords : root-knot nematode; perineal patterns; taxonomy nematode.

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