Vertical Migration of Meloidogyne chitwoodi and M. hapla under Controlled Temperature

Authors

  • J. N. Pinkerton
  • H. Mojtahedi
  • G. S. Santo
  • J. H. O'Bannon

Abstract

Migratory ability of second-stage juveniles (J2) of two Meloidogyne chitwoodi races and a M. hapla population were compared in soil-filled columns at 12, 18, and 24 C. J2 of all populations migrated farthest at 18 C and least at 12 C. Nematode survival was significantly reduced (P = 0.05) at 24 C.M. chitwoodi J2 migrated further and in greater numbers than M. hapla J2 at all temperatures. A comparison with and without a host plant demonstrated no preferential migration toward the plant. Water percolation through the migration columns stimulated upward migration. Key words: Columbia root-knot nematode, northern root-knot nematode, migration, temperature, soil moisture.

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Published

1987-04-15

Issue

Vol. 19, No. 2 (April 1987)

Section

Articles

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