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Euphytica

, 214:40 | Cite as

Resistance of barley variety ‘Venezia’ and its reflection in the Blumeria graminis f. sp. hordei population

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Abstract

Genetic resistance is an efficient and environmentally acceptable way of limiting the damaging effects of plant pathogens on yield and quality of crops. Tests of winter barley variety Venezia revealed an unknown resistance to all tested Blumeria graminis f. sp. hordei isolates. Response type arrays (RTAs) obtained here were created using common avirulent (RT 0) isolates and virulent (RT 4) isolates that first appeared in 2011. RTA of Venezia was identical to RTAs of six other varieties, but differed from RTAs of all other previously tested varieties. Venezia was the first variety to be registered with this resistance, and it is recommended that the resistance be designated Ve. Among 905 isolates randomly collected from the Czech aerial pathogen populations from 2009 to 2015, 13 contained Ve virulence. Each of the isolates differed from the others and thus belonged to different pathotypes. Seven of these 13 pathotypes were collected in the western region of the Czech Republic in an area close to Germany, where Venezia was grown. This finding could support the hypothesis that pathotypes virulent to Venezia have migrated from Germany into the Czech Republic.

Keywords

Coevolution Hordeum vulgare Powdery mildew Resistance genes Virulences 

Notes

Acknowledgements

Excellent technical assistance of Mrs. Dagmar Krejčířová is gratefully acknowledged. The article was generated within project no. RO1117 supported by the Ministry of Agriculture of the Czech Republic.

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© Springer Science+Business Media B.V., part of Springer Nature 2018

Authors and Affiliations

  1. 1.Agrotest Fyto LtdKroměřížCzech Republic

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