Nematodes Parasitic on Forest Trees: III. Reproduction on Selected Hardwoods

J. L. Ruehle


The host-parasite relationships of 13 species of plant parasitic nematodes and five species of hardwoods native to the southeastern United States were tested on greenhouse-grown tree seedlings for 6-10 months. Criteria for parasitism were completion o f life cycle and population increase of nematodes. Belonolaimus longicaudatus, Helicotylenchus dihystera, Scutellonema brachyurum and Tylenchorhynchus claytoni parasitized and reproduced on three or more of the species tested. Hoplolaimus galeatus and Pratylenchus brachyurus parasitized two species, Trichodorus christiei and Criconemoides xenoplax parasitized only red maple. MeloMogyne javanica/Liriodendron tulipi[era combination was the only positive root-knot nematode/hardwood host-parasite relationship. Hemicycliophora silvestris, Meloidogyne arenaria, M. incognita, and M. hapla were not parasites of the tree species tested. Key Words: Host-parasite relations, Liquidambar styraciflua, Acer rubrum, Liriodendron tulipi[era, Platanus occidentalis, Populus heterophylla.

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