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Marker-assisted selection for leaf rust resistance in wheat by transfer of gene Lr19

Author

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  • Svetlana Šliková

    (Division of Applied Genetics and Breeding, Research Institute of Plant Production, Piešťany, Slovak Republic)

  • Edita Gregorová

    (Division of Applied Genetics and Breeding, Research Institute of Plant Production, Piešťany, Slovak Republic)

  • Pavel Bartoš

    (Division of Applied Genetics and Breeding, Research Institute of Plant Production, Piešťany, Slovak Republic)

  • Ján Kraic

    (Division of Applied Genetics and Breeding, Research Institute of Plant Production, Piešťany, Slovak Republic)

Abstract

Cultivar Agrus, possessing a chromosomal substitution, and cultivar Sunnan, possessing a translocation from Thinopyrum ponticum (= Agropyron elongatum, 2n = 10x) with leaf rust resistance gene Lr19 against Puccinia triticina, were crossed with the susceptible winter wheat cultivars Sofia, Simona and Lívia to transfer Lr19 into agronomi­cally better genotypes by marker-assisted selection. Altogether 304 individuals of the F2 progeny were screened for endopeptidase phenotypes. We found null endopeptidase allele Ep-D1c (marker tightly liked with resistance gene Lr19) in 49 plants. The progenies of 40 plants of the F2 generation (with Ep-D1c) were reselected with the same marker and tested for leaf rust reaction. Results achieved with the isozyme marker corresponded with those of the resistance tests. We obtained 28 F3 families with resistance gene Lr19 confirmed by presence of the null endopeptidase allele and by tests for leaf rust reaction. Field tests showed that Agrus increased the height of plants in the progenies, and the smallest negative effect on yield components was observed in both crosses with cultivar Sunnan.

Suggested Citation

  • Svetlana Šliková & Edita Gregorová & Pavel Bartoš & Ján Kraic, 2003. "Marker-assisted selection for leaf rust resistance in wheat by transfer of gene Lr19," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 39(1), pages 13-17.
    • Handle: RePEc:caa:jnlpps:v:39:y:2003:i:1:id:3821-pps
    DOI: 10.17221/3821-PPS
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