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Migrational capacity of Fennoscandian populations of Venturia tremulae

Published online by Cambridge University Press:  17 February 2004

Risto KASANEN ,
Jarkko HANTULA ,
Martti VUORINEN ,
Jan STENLID ,
Halvor SOLHEIM  and
Timo KURKELA
Risto KASANEN
Affiliation:
Finnish Forest Research Institute, Vantaa Research Centre, P.O. Box 18, FIN-01301, Vantaa, Finland. E-mail: risto.kasanen@metla.fi
Jarkko HANTULA
Affiliation:
Finnish Forest Research Institute, Vantaa Research Centre, P.O. Box 18, FIN-01301, Vantaa, Finland. E-mail: risto.kasanen@metla.fi
Martti VUORINEN
Affiliation:
FFRI, Suonenjoki Research Station, Suonenjoki, Finland.
Jan STENLID
Affiliation:
Institute of Mycology and Forest Pathology, Swedish University of Agricultural Sciences, Uppsala, Sweden.
Halvor SOLHEIM
Affiliation:
Norwegian Forest Research Institute, Aas, Norway.
Timo KURKELA
Affiliation:
Finnish Forest Research Institute, Vantaa Research Centre, P.O. Box 18, FIN-01301, Vantaa, Finland. E-mail: risto.kasanen@metla.fi
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Abstract

Genetic variation in three multiallelic loci was analysed with Temperature Gradient Gel Electrophoresis in order to assess the genetic population structure of Venturia tremulae var. tremulae in order to understand the evolutionary potential of the pathogen against resistance breeding. Also the identification of the fungus was verified with molecular analysis of reference isolates. The Fst and Gst values were very low indicating no substructuring or restrictions to gene flow between Fennoscandian populations of V. tremulae. The results imply high epidemiological efficiency of the fungus and therefore continuous breeding programme should be implemented for Venturia resistance of aspen.

Type
Research Article
Information
Mycological Research , Volume 108 , Issue 1 , January 2004 , pp. 64 - 70
Copyright
The British Mycological Society 2004

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