RESPONSE OF SELECTED FOREST TREES TO MELOIDOGYNE INCOGNITA INFECTIONS

Authors

  • N. Sasanelli
  • D. Pierangeli

Abstract

The reaction of seedlings of Acer negundo, Acer pseudoplatanus, Catalpa bignonioides, Celtis australis, Fraxinus excelsior, Juglans nigra, Juglans regia and Tilia cordata to Meloidogyne incognita host race 1 was evaluated in a glasshouse experiment. Ali the tested species were resistant with a GI (gall index) between O and 1.1. Only the roots of C. bignonioides were heavily infested by the nematode CGI=3.25). Cross sections of M. incognita infested roots of the two most susceptible tree species tested CC. bignonioides and C. australis), had 4-6 multinucleate giant cells arranged around the nematode body in the vascular cylinder. Abnormal and interrupted xylem elements were also observed in many sections.

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Published

1994-06-15

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Section

Articles