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Cereal Research Communications

, Volume 38, Issue 1, pp 83–89 | Cite as

Virulence of Puccinia triticina on Lr28 in wheat and its evolutionary relation to prevalent pathotypes in India

  • S. C. BhardwajEmail author
  • M. Prashar
  • S. K. Jain
  • S. Kumar
  • Y. P. Sharma
  • M. Sivasamy
  • I. K. Kalappanavar
Pathology

Abstract

Two new pathotypes of Puccinia triticina, 121R60-1 and 377R60-1 the latter virulent on Lr28, are described for the first time. Both the pathotypes are designated as MHTTS as per North American system of pathotype identification. Pathotype 377R60-1 appears to be the result of a single step mutation for virulence to Lr28 in pathotype 121R60-1. Both pathotypes appear closely related to the most prevalent virulent pathotype 121R63-1(THTTS). The avirulence/virulence profile, resistance sources and their possible relationship with other pathotypes are discussed. Lr28 is now included as one of the differentials for the identification of leaf rust pathotypes.

Keywords

brown rust India Lr28 virulence pathotype Puccinia triticina resistance wheat 

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Copyright information

© Akadémiai Kiadó, Budapest 2010

Authors and Affiliations

  • S. C. Bhardwaj
    • 1
    Email author
  • M. Prashar
    • 1
  • S. K. Jain
  • S. Kumar
    • 1
  • Y. P. Sharma
    • 1
  • M. Sivasamy
    • 2
  • I. K. Kalappanavar
    • 3
  1. 1.Regional StationDirectorate of Wheat ResearchShimlaIndia
  2. 2.Regional StationI.A.R.I. WellingtonNilgiri HillsIndia
  3. 3.University of Agricultural SciencesDharwadIndia

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