Genetic-Variation And Pathotype Response In Globodera-Pallida (Nematoda, Heteroderidae) From The Falkland Islands

The pathotype composition and genetic variation in potato cyst nematode populations from the Falkland Islands were examined using differential potato clones and isozyme analysis. Only Globodera pallida was identified and pathotype data indicated a previously undetected pathotype response in a number of populations. Patterns of genetic heterogeneity highlighted distinct population groupings which may result from at least two introductions from the South American mainland,