Pratylenchus zeae




Rev 10/05/2021

  Classification Hosts
Morphology and Anatomy Life Cycle
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           Pratylenchus zeae Graham, 1951

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Morphology and Anatomy:

  Nematode is 0.4-0.5mm long.

Lip region is generally low and flat; tail conical and rounded.

Nematode has short ventral overlap of esophagus.

Monovarial, uterus prodelphic.

Females are slender.


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

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Economic Importance:

C-rated pest in California Nematode Pest Rating System.

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 Migratory endoparasite.

All stages feed in the root cortex, never found in vascular tissues.

Extracts from the nematode show cellulolytic enzyme activity.

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Tobacco, corn, sugarcane, cereals.

For an extensive host range list for this species, click

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Life Cycle:

Ecophysiological Parameters:

For Ecophysiological Parameters for this species, click If species level data are not available, click for genus level parameters

 No males; females reproduce by mitotic parthenogenesis; the somatic chromosome number is 21-26 (Roman and Triantaphyllou, 1969).

In mitotic parthenogenesis there is no fertilization and there is mitotic division of oogonia so that the somatic number of chromosomes is preserved throughout.

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Stunting, wilting, premature yellowing of plants, root lesions.

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

For plants reported to have some level of resistance to this species, click
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Roman, J., Triantaphyllou, A.C. 1969. Gametogenesis oand reproduction of seven species of Pratylenchus. J. Nematology 1:357-362.

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Copyright © 1999 by Howard Ferris.
Revised: October 05, 2021.