Meloidogyne graminis




Rev 10/24/2023

Grass Root-knot Nematode Classification Hosts
Morphology and Anatomy Life Cycle
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        Meloidogyne graminis (Sledge & Golden, 1964) Whitehead, 1968


Hypsoperine graminis (Sledge & Golden, 1964)
Hypsoperine (H.) graminis (Sledge & Golden, 1964)

Review general characteristics of the genus Meloidogyne.

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Morphology and Anatomy:


Perineal pattern

Reported median body size for this species (Length mm; width micrometers; weight micrograms) - Click:

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First reported as a parasite of turf grasses in Florida, USA and later from several US states and countries in South America, Europe and Asia (Subbotin et al., 2021)


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Economic Importance:

C-rated pest in California Nematode Pest Rating System.

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Sedentary endoparasite.

Feeding site establishment and development typical of genus. 

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Type Host: St. Augustine Grass (Stenotaphrum secundatum)

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Life Cycle:

Ecophysiological Parameters:

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Haploid chromosome number n=18;  reproduction is by facultative meiotic parthenogenesis. The egg nucleus undergoes a meiotic reduction division; one member of each pair of chromatids remains in a haploid nucleus and the other in a polar body. If fertilization by a male sperm occurs, the diploid number of chromosomes is restored. Otherwise the somatic number of chromosomes is restored by fusion of the egg pronucleus with the polar body from the reduction division (Subbotin et al., 2021; Triantaphyllou, 1985).

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Host Plant Resistance, Non-hosts and Crop Rotation alternatives:

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Subbotin, S.A. Palomares-Rius, J.E., Castillo, P. 2021. Systematics of Root-knot Nematodes (Nematoda: Meloidogynidae). Nematology Monographs and Perspectives Vol 14: D.J. Hunt and R.N. Perry (eds) Brill, Leiden, The Netherlands 857p.

Triantaphyllou, A.C. 1985. Gametogenesis and the chromosomes  of Meloidogune nataliei: not typical of other root-knot nematodes. J. Nematology 17:1-5.

Triantaphyllou, A.C. 1985. Cytogenetics, cytotaxonomy and phylogeny of root-knot nematodes. In Sasser, J.N. & Carter, C.C. (eds) An Advanced Treatiswe on Meloidogyne.Vol 1. Biology and Control.N.C. State Universty Graphics, Raleigh, N.C. USA.

Whitehead, A.G. 1968. Taxonomy of Meloidogyne (Nematodea: Heteroderidae) with descriptions of four new species. Trans. Zoological Soc. London. 31: 263-401

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Copyright © 1999 by Howard Ferris.
Revised: October 24, 2023.