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The reaction of three spring barley varieties exposed to epidemics of Rhynchosporium secalis of varying intensity and duration

Published online by Cambridge University Press:  27 March 2009

R. H. D. Rowling  and
D. G. Jones
D. G. Jones
Affiliation:
Department of Agricultural Botany, University College of Wales, Aberystwyth, Dyfed
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Summary

Three spring barley varieties, Proctor, Vada and Mosanne, were inoculated with Rhynchosporium secalis(Oudem.) J. J. Davies at Growth Stages 3, 7, 10·1 and 10·5 (Large, 1954). The treatments included single inoculation at each growth stage and multiple inoculations at two, three and four of the above growth stages. There was no effect of inoculation oil the number of fertile tillers. Thousand-grain weight was reduced in all seven inoculation treatments in Mosanne but only the quadruple inoculation adversely affected the other two varieties. Numbers of grains of both Mosanne and Vada were reduced by treatments which included an inoculation at ear emergence but Proctor was affected only by the quadruple inoculation. In terms of disease assessment Mosanne was very susceptible and Proctor moderately resistant but Vada, with symptom scores only slightly better than Mosanne, exhibited a degree of tolerance which was reflected by the grain weight results in which small increases were recorded. This tolerance mechanism, possibly acting through compensation in this variety, is compared with compensation reported in wheat.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 87 , Issue 3 , December 1976 , pp. 643 - 647
Copyright
Copyright © Cambridge University Press 1976

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References

Bronniman, A. (1968). On Septoria nodorum Berk., the pathogen causing leaf blotch and glume blotch of wheat. Phytopathologische Zeitschrift 61, 101–46.Google Scholar
Cooke, B. M. & Jones, D. G. (1971). The epidemiology of Septoria tritici and S. nodorum. III. The reaction of spring and winter wheat varieties to infection by Septoria tritici and S. nodorum. Transactions of the British Mycological Society 56, 121–35.CrossRefGoogle Scholar
James, W. C., Jenkins, J. E. E. & Jemmett, J. L. (1968). The relationship between leaf blotch caused by Khynchosporium secalis and losses in grain yield of spring barley. Annals of Applied Biology 62, 273–88.CrossRefGoogle Scholar
Jones, D. G. & Cooke, B. M. (1970). Septoria tritici Rob. & Desm. on the heads of winter wheat in West Wales. Plant Pathology 19, 99–100.Google Scholar
Jones, D. G. & Odebunmi, K. (1971). The epidemiology of Septoria tritici and S. nodorum. IV. The effect of inoculation at different growth stages and on different plant parts. Transactions of the British Mycological Society 56, 281.CrossRefGoogle Scholar
Jones, D. G. & Rowling, R. H. D. (1976). The reaction of two spring wheat varieties exposed to epidemics of Septoria nodorum and S. tritici of varying intensity and duration. Journal of Agricultural Science 87, 401–6.CrossRefGoogle Scholar
King, J. E. (1972). Surveys of foliar diseases of spring barley in England and Wales 1967–70. Plant Pathology 21, 23–35.CrossRefGoogle Scholar
Large, E. C. (1954). Growth stages in cereals. Plant Pathology 3, 128–9.CrossRefGoogle Scholar
Schaller, C. W. (1963). The effect of mildew and scald infection on yield and quality of barley. Agronomy Journal 43, 183–8.CrossRefGoogle Scholar
Skoropad, W. P. (1960). Barley scald in the Prairie provinces of Canada. Commonwealth Phytopathological News 6, 25–7.Google Scholar