Czech J. Genet. Plant Breed., 2015, 51(4):162-165 | DOI: 10.17221/72/2015-CJGPB

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

Staffan C. ANDERSSON1, Eva JOHANSSON1, Michael BAUM2, Fawzi RIHAWI2, Mustapha EL BOUHSSINI3
1 Department of Plant Breeding, Swedish University of Agricultural Sciences, Alnarp, Sweden
2 International Center for Agricultural Research in the Dry Areas (ICARDA), Aleppo, Syria
3 International Center for Agricultural Research in the Dry Areas (ICARDA), Rabat-Institut, Rabat, Morocco

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

Published: December 31, 2015  Show citation

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ANDERSSON SC, JOHANSSON E, BAUM M, RIHAWI F, EL BOUHSSINI M. New resistance sources to Russian wheat aphid (Diuraphis noxia) in Swedish wheat substitution and translocation lines with rye (Secale cereale) and Leymus mollis. Czech J. Genet. Plant Breed. 2015;51(4):162-165. doi: 10.17221/72/2015-CJGPB.
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