Powdery mildew resistance in some Aegilops species

Miroslav Švec, Marta Miklovičová, Valéria Šudyová, Martina Hudcovicová, Pavol Hauptvogel and Ján Kraic
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Miroslav Švec: Department of Genetics, Comenius University, Bratislava, Slovak Republic
Marta Miklovičová: Department of Genetics, Comenius University, Bratislava, Slovak Republic
Valéria Šudyová: Department of Genetics, Comenius University, Bratislava, Slovak Republic
Martina Hudcovicová: Department of Genetics, Comenius University, Bratislava, Slovak Republic
Pavol Hauptvogel: Department of Genetics, Comenius University, Bratislava, Slovak Republic
Ján Kraic: Department of Genetics, Comenius University, Bratislava, Slovak Republic

Plant Protection Science, 2004, vol. 40, issue 3, 87-93

Abstract: Resistance to powdery mildew (Blumeria graminis (DC.) E. O. Speer f.sp. tritici Em. Marchal) in Aegilops crassa Boiss., Ae. ventricosa Tausch, Ae. biuncialis Vis., Ae. triuncialis L. and Ae. cylindrica Host was tested at the stage of primary leaves in the years 2000 and 2001. All plants of Ae. ventricosa, Ae. biuncialis and sample No. 9 of Ae. cylindrica repeatedly showed a susceptible reaction after being inoculated by all powdery mildew isolates used. In contrast, plants of Ae. crassa, sample No. 8 of Ae. cylindrica and all samples (No. 13, 21, 22, 24 and 26) of Ae. triuncialis were resistant to all isolates. Samples No. 5, 6, 7, 19 and 23 of Ae. cylindrica contained resistant and susceptible plants in both years. Virulence to these samples ranged from 3% to 18%. Cluster analysis using DNA microsatellite markers showed that the accessions are arranged in groups based on taxonomic relationship but not on basis of resistance. Plants susceptible to powdery mildew at the juvenile stage showed satisfactory adult plant resistance.

Keywords: Blumeria graminis DC f.sp. tritici; Aegilops spp.; disease resistance; virulence analysis; DNA polymorphism; genetic resources (search for similar items in EconPapers)
Date: 2004
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpps:v:40:y:2004:i:3:id:1471-pps

DOI: 10.17221/1471-PPS

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