NDLI: Diversity and Complexity of Erysiphe graminis f.sp. hordei Collected from Barley Cultivar Mixtures or Barley Plots Treated with a Resistance Elicitor

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Diversity and Complexity of Erysiphe graminis f.sp. hordei Collected from Barley Cultivar Mixtures or Barley Plots Treated with a Resistance Elicitor

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Book Review : European Journal of Plant Pathology , Volume 104 , Issue 9

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European Journal of Plant Pathology : Volume 104, Issue 8, November 1998

European Journal of Plant Pathology : Volume 104, Issue 7, September 1998

European Journal of Plant Pathology : Volume 104, Issue 6, August 1998

European Journal of Plant Pathology : Volume 104, Issue 5, July 1998

European Journal of Plant Pathology : Volume 104, Issue 4, May 1998

European Journal of Plant Pathology : Volume 104, Issue 3, April 1998

European Journal of Plant Pathology : Volume 104, Issue 2, March 1998

European Journal of Plant Pathology : Volume 104, Issue 1, January 1998

European Journal of Plant Pathology : Volume 103

Diversity and Complexity of Erysiphe graminis f.sp. hordei Collected from Barley Cultivar Mixtures or Barley Plots Treated with a Resistance Elicitor

Content Provider	Springer Nature Link
Author	Newton, Adrian C. Hackett, Christine A. Guy, David C.
Copyright Year	1998
Abstract	Powdery mildew populations were analysed to determine the effects of a resistance elicitor and cultivar mixtures on genetic complexity and diversity. Isolations were made from a range of spring barley monocultures and mixtures in a field trial, and characterised for virulence and RAPD profile. In a second trial, isolates were taken from a single mixture from untreated and resistance elicitor-treated areas and from the components of the mixture in monoculture. The mildew population was not only highly heterogeneous for virulence characteristics, but also proved heterogeneous within pathotypes for molecular markers, indicating the major impact of sexual recombination on population structure and the lack of clonal dominance. Various diversity measurements were compared and the value of dissimilarity measurement for revealing genetic distance within a population was highlighted. There was a trend towards increasing complexity as the season progressed, but there was no consistent relationship between cultivar or mixture, disease control treatment, fertiliser treatment, replicate or position in trial, and pathogen genotype. Whilst the resistance elicitor did reduce mildew by 78% in the first trial, and there was no interaction with fertiliser level in its expression, control was substantially less in the second trial. There were no differences between mildew isolates from elicitor and control treatments. It was felt that more effective and consistent resistance elicitors need to be developed before it can be stated that they are unlikely to be eroded by selecting resistant or adapted mildew genotypes.
Starting Page	925
Ending Page	931
Page Count	7
File Format	PDF
ISSN	09291873
Journal	European Journal of Plant Pathology
Volume Number	104
Issue Number	9
e-ISSN	15738469
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	1998-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ecology Plant Sciences Plant Pathology
Content Type	Text
Resource Type	Article
Subject	Plant Science Horticulture Agronomy and Crop Science

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