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Genetic variability of Phytophthora infestans in Norway and Finland as revealed by mating type and fingerprint probe RG57

Published online by Cambridge University Press:  01 December 1999

MAY BENTE BRURBERG ,
ASKO HANNUKKALA  and
ARNE HERMANSEN
MAY BENTE BRURBERG
Affiliation:
The Norwegian Crop Research Institute, Plant Protection Centre, Dept. of Plant Pathology, Fellesbygget, N-1432 Ås, Norway
ASKO HANNUKKALA
Affiliation:
Agricultural Research Centre, Institute of Plant Protection, FIN-31600 Jokioinen, Finland
ARNE HERMANSEN
Affiliation:
The Norwegian Crop Research Institute, Plant Protection Centre, Dept. of Plant Pathology, Fellesbygget, N-1432 Ås, Norway
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Abstract

Mating type and RG57 fingerprints were determined for 141 isolates of Phytophthora infestans from 63 fields in all the important potato growing areas in Norway and Finland. Seventy-six multilocus genotypes were identified, of which 53 were detected only once. Norwegian and Finnish isolates were similar in terms of genotypic diversity and the genetic distances between the genotypes. The large number of genotypes and the high genetic distances between the genotypes indicate that sexual reproduction is contributing significantly to the genetic variation of P. infestans in Norway and Finland.

Type
Research Article
Information
Mycological Research , Volume 103 , Issue 12 , December 1999 , pp. 1609 - 1615
Copyright
© The British Mycological Society 1999

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