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IX.—Uromyces punctatus Schroet. in Britain*†

Published online by Cambridge University Press:  11 June 2012

D. W. Burns
D. W. Burns
Affiliation:
Department of Botany, The University, Aberdeen
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Synopsis

On the European continent, Uromyces punctatus is heterœcious and occurs on 35 species and 1 variety of Astragalus, 6 species of Oxytropis and 1 species of Onobrychis. There are 3 æcidial hosts recorded, the major one being Euphorbia cyparissias. At St Andrews, the uredo stage of the rust is confined to A. danicus and only uredospores and teleutospores have been found. Experiments conducted showed that the local population of the rust was capable of infecting 9 species of Astragalus and 1 species of Medicago, out of 27 species of Astragalus, 5 species of Medicago and 28 species of other legumes inoculated. No host specialization within the local population was evident. Attempts to germinate the teleutospores, using a variety of methods, failed, with the exception of a single spore. The major æcidial host, when inoculated with teleutospores, failed to show any signs of æcidial infection over a period of four years. Possible factors affecting the shortening of the life cycle of the rust are discussed.

Type
Research Article
Information
Proceedings of the Royal Society of Edinburgh, Section B: Biological Sciences , Volume 66 , Issue 2 , 1956 , pp. 212 - 221
Copyright
Copyright © Royal Society of Edinburgh 1956

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Footnotes

*

This paper was assisted in publication by a grant from the Carnegie Trust for the Universities of Scotland.

†

This study was carried out in the Department of Botany, United College, University of St Andrews, under the supervision of Dr J. A. Macdonald.

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