African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12481

Full Length Research Paper

Effective genes for resistance to stripe rust and virulence of Puccinia striiformis f. sp. tritici in Pakistan

Hadi Bux1, Muhammad Ashraf2*, Xianming Chen3 and Abdul Samad Mumtaz1        
1Department of Plant Sciences, Quaid-i-Azam University, Islamabad, Pakistan. 2NUST Centre for Virology and Immunology, National University for Science and Technology, (NUST), Rawalpindi, Pakistan. 3United States Department of Agriculture, Agricultural Research Service, Wheat Genetics, Quality, Physiology and Disease Research Unit and Department of Plant Pathology, Washington State University, Pullman, Washington, USA.
Email: [email protected]

  •  Accepted: 04 April 2011
  •  Published: 20 June 2011

Abstract

Virulence patterns of wheat stripe rust were studied under the field conditions across four environmentally different locations: Quaid-i-Azam University (Islamabad), Pirsabak (NWFP), Faisalabad (Punjab) and Sakrand (Sindh) by planting trap nursery of tester lines and Pakistan varieties. The results revealed that stripe rust resistance genes Yr3, Yr5, Yr10, Yr15, Yr26, YrSP and YrCV were resistant, while Yr18 showed moderate susceptibility at all locations. Genes YrA-, Yr2, Yr6, Yr7, Yr8, Yr9, Yr17,Yr27 and gene combinations Opata (Yr27+Yr18) and Super Kauz (Yr9, Yr27, Yr18) were found susceptible. Among the fifty-one (51) commercial varieties; Barani70, Marvi2000, Iqbal2000, GA2000 and Seher2006 were found resistant. The genes found effective against stripe rust under natural conditions may be deployed singly or in combination to develop high yielding resistant wheat varieties in Pakistan.

 

Key words: Near-isogenic lines, Puccinia striiformis f. sp. tritici, stripe rust, Triticumaestivum, virulence, Yr genes.

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This article is published under the terms of the Creative Commons Attribution License 4.0

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