Post on 08-Jan-2016
description
Races of P. graminis f. sp. tritici with virulence to Sr13 and Sr9eOlivera PD, Yahyaoui A, Badebo A, Rattu A, Rouse M, Ward R, Singh R, Fetch T, and Jin Y
North American Rust WorkshopSt. Paul - June 12, 2011
Stem Rust Resistance in Durum Durum wheat of North America has a higher frequency of resistance to TTKSK than common wheat
We postulated that resistance to TTKSK in durum is mostly due to Sr13
Race Identification Samples
- 41 samples of infected stems collected at Debre Zeit stem rust screening nursery in 2009
38 single pustule isolates - race-typed based on the NA differential set - characterized on a set of 24 additional resistant lines Races:
- 18 IsolatesTTKSK - 12 IsolatesJRCQC - 4 IsolatesTRTTF
Infection Types on North American Differential Set of Races JRCQC, TRTTF, and TTKSK
GeneJRCQCTRTTFTTKSKSr5;144Sr21443+Sr9e43+4Sr7b23+4Sr11444Sr63+3+3+Sr8a22+24Sr9g444Sr3603+0Sr9b2+44
GeneJRCQCTRTTFTTKSKSr3022-43+Sr17+1333+22+Sr9a3+44Sr9d444Sr101+3;44SrTmp2-42+Sr242-22-Sr312-2-4Sr38;144McN444
Infection Types Produced by Races JRCQC, TRTTF, and TTKSK on Sr13 and Sr9e
Reaction of Race JRCQC in Durum Cultivars 8155-B28155-B1Iumillo-1MindumLeedsSceptreMedoraRustyKhapliVernalKubanka47-1SpelmarMindumSt464AcmeArnaukta
Infection types on 1AL.1RS of races JRCQC, TRTTF, and TTKSK
GeneJRCQCTRTTFTTKSK1AL.1RS2-322+
Race TRTTF Race TRTTF was first found in a collection from Yemen in 2006
TRTTF is similar to race RRTTF that was found from stem rust collections from Pakistan
Race RRTTF is avirulent to Sr9e and 1AL.1RS translocation
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