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Euphytica

, Volume 154, Issue 1–2, pp 249–254 | Cite as

The use of wheat/goatgrass introgression lines for the detection of gene(s) determining resistance to septoria tritici blotch (Mycosphaerella graminicola)

  • M. R. Simón
  • F. M. Ayala
  • C. A. Cordo
  • M. S. Röder
  • A. BörnerEmail author
Article

Abstract

At the IPK Gatersleben a series of 85 bread wheat (T. aestivum)/goatgrass (Aegilops tauschii) introgression lines was developed recently. Based on the knowledge that chromosome 7D of this particular Ae. tauschii is a donor of resistance to septoria tritici blotch (Mycosphaerella graminicola), a sub-set of thirteen chromosome 7D introgression lines was investigated along with the susceptible recipient variety ‘Chinese Spring’ (CS) and the resistant donor line ‘CS (Syn 7D)’. The material was inoculated with two Argentinian isolates of the pathogen (IPO 92067 and IPO 93014) at both the seedlings (two leaf) and adult (tillering) stages at two locations over 2 years (2003, 2004). The resistance was effective against both isolates and at both developmental stages, and the resistance locus maps to the centromeric region of chromosome arm 7DS. On the basis of its relationship with the microsatellite marker Xgwm44, it is likely that the gene involved is Stb5. Stb5 is therefore apparently effective against M. graminicola isolates originating from both Europe and South America.

Keywords

Disease resistance Seedling stage Adult plant stage Septoria tritici blotch Mycosphaerella graminicola Aegilops tauschii Triticum aestivum Alien introgression 

Notes

Acknowledgements

The authors thank Winai Somprason, Ing. Marcelo Asborno, Ing. Martín Pardi and the staff of the Estación Experimental Facultad de Ciencias Agrarias, La Plata for their excellent technical assistance.

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Copyright information

© Springer Science+Business Media B.V. 2006

Authors and Affiliations

  • M. R. Simón
    • 1
  • F. M. Ayala
    • 1
  • C. A. Cordo
    • 2
  • M. S. Röder
    • 3
  • A. Börner
    • 3
    Email author
  1. 1.CerealiculturaUniversidad Nacional de La PlataLa PlataArgentina
  2. 2.CIDEFI-CIC, Facultad de Ciencias Agrarias y ForestalesUniversidad Nacional de La PlataLa PlataArgentina
  3. 3.Institut für Pflanzengenetik und Kulturpflanzenforschung (IPK)GaterslebenGermany

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