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Parasitism of Tylenchus Emarginatus On Conifer Seedling Roots and Some Observations On the Biology of the Nematode

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For more content, see Nematology.

Tylenchus emarginalus fed and reproduced as a migratory ectoparasite on the roots of the seven species of conifer seedlings tested. The nematode was unable to feed or reproduce on ten species of soil-borne fungi. The mode of parasitism of the nematode on the cells of red, and black spruce roots is described. It was calculated that one T. emarginatus could cause 576 wounds on a seedling root in a 24-hr period. The importance of such wounds as infection courts for damping-off fungi is discussed. The nematode was successfully propagated on black spruce roots grown under aseptic conditions in agar culture.

Affiliations: 1: Department of Forestry of Canada, Forest Research Laboratory, Sillery, Quebec


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