• Molecular markers and phenotypic characterization of adult plant resistance genes Lr 34, Lr 46, Lr 67 and Lr 68 and their association with partial resistance to leaf rust in wheat

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    • Keywords


      wheat; leaf rust; partial resistance; molecular markers.

    • Abstract


      Thirty-nine wheat genotypes were studied to estimate their partial resistance levels to leaf rust at Behira governortae during three growing seasons, i.e. 2016/2017, 2017/2018 and 2018/2019. In these genotypes, partial resistance was characterized using final leaf rust severity (FRS %) and area under disease progress curve (AUDPC). Of the tested genotypes, only three wheat varieties;Giza 171, Misr 3 and Sohag 5 showed complete resistance. Further, 28 of the 39 genotypes had partial resistance as they revealed low and/or moderate values of FRS (%) and AUDPC (not exceeding 30% and 300, respectively). The other eight varieties were fast rusting, as they displayed the maximum values of FRS (%) and AUDPC. The four monogenic lines; Lr 34, Lr 46, Lr 67 and Lr 68 were identified in the wheat varieties using linked molecular markers; csLV34, Xgwm259, CFD71 and csGSR. Phenotypic results of the wheat varieties were confirmed by molecular marker analysis.

    • Author Affiliations



      1. Wheat Diseases Research Department, Plant Pathology Research Institute, ARC, P.O. Box: 12619, Giza, Egypt
      2. Biotechnologist, Biodiversity and Integrated Gene Management, International Centre for Agricultural Research in the Dry Areas (ICARDA), P.O. Box: 2416, Giza, Egypt
      3. Agricultural Genetic Engineering Research Institute (AGERI), ARC, P.O. Box: 12619, Giza, Egypt
    • Dates

  • Journal of Genetics | News

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