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Yellow rust (Puccinia striiformis Westend.) of barley in England, 1960–65

Published online by Cambridge University Press:  27 March 2009

R. C. F. Macer
Affiliation:
Plant Breeding Institute, Cambridge
M. Van Den Driessche
Affiliation:
Plant Breeding Institute, Cambridge

Extract

Yellow rust of barley has been observed more frequently at Cambridge in the period 1960-65 than the previous five years. The disease occurs in most parts of England but appears to be prevalent and more damaging in the south and west of the country. The increased incidence of the disease is probably associated both with the greatly increased acreage of barley now being grown and with the introduction of more susceptible barley varieties.

Two isolates of Puccinia striiformis differing in virulence characteristics have been found to be representative of the population of the pathogen in England. These isolates are similar to, if not identical with, physiologic races 23 and 24 which are widespread in continental Europe.

A survey of the seedling resistance to P. striiformis of the currently cultivated barley varieties showed that, of the twelve varieties tested, nine were susceptible to both isolates of the pathogen and three were susceptible to one isolate and resistant to the other. No varieties were resistant to both isolates.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1966

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