Rev 09/05/2022
Tylenchida Tylenchina Tylenchoidea Heteroderidae Meloidogyninae
Meloidogyne partityla Kleynhans, 1986
Pecan Root-Knot Nematode Back to Top
Female:
Male:
Reported median body size for this species (Length mm; width micrometers; weight micrograms) - Click:
Reported only from South Africa and USA. In USA it is reported from Texas, New Mexico, Arizona, Oklahoma and Florida, primarily on roots of pecan trees.
Pecan tree seedlings are stressed and grow poorly. Seedlings have dead shoots in canopy. Yield decline reported for mature trees in New Mexico.
Feeding site establishment and development typical of genus.
Type Host: mpecan (Crya illinoensis)
Known hosts are pecan, Carya illinoensis, hickory and walnut trees (Starr et al., 2006)..
Reported non-hosts include beans, peas, cowpea, tomato, peach and weeping lovegrass (Marais and Heyns, 1990).
Ecophysiological Parameters:
Sedentary endoparasites.
Female body ruptures root cortex and may protrude with the egg mass on the root surface.
Both major roots and young roots have prominent galling. Seedlings stressed with dead shoots (Brito et al., 2006)..
A two-year host free rotation is suggested for tree nurseries (Brito et al. 2006)..
Host Plant Resistance, Non-hosts and Crop Rotation alternatives:
Brito, J.A., R. Kaur, D.W. Dickson, J.R. Rich and L.A. Halsey. 2006. The pecan root-knot nematode, Meloidogyne partityla Kleynhans, 1986. Nematology Circular 222. Florida Dept Ag. and Cons. Serv.
Marais, M. and J. Heyns. 1990. Host plant tests with Meloidogyne partityla Kleynhans, 1986. Phytophylactica 22:161-162.
Starr, J.L., E.K. Tomaszewski, M. Mundo-Ocampo and J.G. Baldwin, 1995. Meloidogyne partityla on pecan: isozyme phenotypes and other hosts. J. Nematology 28:565-568.