New resistance sources to Russian wheat aphid (Diuraphis noxia) in Swedish wheat substitution and translocation lines with rye (Secale cereale) and Leymus mollis

Staffan C. Andersson, Eva Johansson, Michael Baum, Fawzi Rihawi and Mustapha EL Bouhssini
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Staffan C. Andersson: Department of Plant Breeding, Swedish University of Agricultural Sciences, Alnarp, Sweden
Eva Johansson: Department of Plant Breeding, Swedish University of Agricultural Sciences, Alnarp, Sweden
Michael Baum: International Center for Agricultural Research in the Dry Areas (ICARDA), Aleppo, Syria
Fawzi Rihawi: International Center for Agricultural Research in the Dry Areas (ICARDA), Aleppo, Syria
Mustapha EL Bouhssini: International Center for Agricultural Research in the Dry Areas (ICARDA), Rabat-Institut, Rabat, Morocco

Czech Journal of Genetics and Plant Breeding, 2015, vol. 51, issue 4, 162-165

Abstract: Russian wheat aphid is an important pest in many wheat growing countries of the world. Different resistance genes to the pest have previously been identified. However, some biotypes of the pest are virulent to most of these genes. Swedish wheat-rye and wheat-Leymus, consisting of 235 accessions with substitutions and translocations, were investigated for resistance to the aphid. A total of 86 accessions were shown to be either resistant or moderately resistant. Resistance was found particularly in accessions having substitutions of 1R instead of 1D [1R(1D) or 1R(1D) + 6R(6D)], in translocations to 3D or 5A (3DL.3RS and 5AL.5RS) and in accessions with introgressions of Leymus mollis. Resistances to Russian wheat aphid obtained from the hereby reported chromosomes and combinations have not previously been reported. These rye and Leymus genes can thus be useful for widening the pool of resistance genes for future breeding of cultivars resistant to Russian wheat aphid.

Keywords: alien introgressions; aphid resistance; Dnr genes; Triticum aestivum; 1R (search for similar items in EconPapers)
Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlcjg:v:51:y:2015:i:4:id:72-2015-cjgpb

DOI: 10.17221/72/2015-CJGPB

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