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Effect of Puccinia cardui-pycnocephali on Slender Thistles (Carduus pycnocephalus and C. tenuiflorus)

Published online by Cambridge University Press:  12 June 2017

Isabelle Olivieri
Isabelle Olivieri*
Affiliation:
CSIRO Biological Control Unit, 335 Ave. P. Parguel, 34100, Montpellier, France
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Abstract

The effect of repeated inoculations of the rust Puccinia cardui-pycnocephali Sydow (Uredinae) on growing rosettes of Mediterranean specimens of slenderflower thistle (Carduus tenuiflorus Curt. ♯3 CRUTE) and Italian thistle (Carduus pycnocephalus L. ♯ CRUPY), and Australian specimens of Italian thistle was investigated, using a Mediterranean strain of the rust collected mainly on Italian thistle. Growth of slenderflower thistle was not affected, but growth of both specimens of Italian thistle was decreased significantly when inoculated with the rust. This decrease was significantly higher on Australian specimens.

Keywords

Biological controlhost-specificityCRUTECRUPY
Type
Weed Biology and Ecology
Information
Weed Science , Volume 32 , Issue 4 , July 1984 , pp. 508 - 510
Copyright
Copyright © 1984 by the Weed Science Society of America 

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References

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