1 / 8

Races of P. graminis f. sp. tritici with virulence to Sr13 and Sr9e

Races of P. graminis f. sp. tritici with virulence to Sr13 and Sr9e. Olivera PD, Yahyaoui A, Badebo A, Rattu A, Rouse M, Ward R, Singh R, Fetch T, and Jin Y North American Rust Workshop St. Paul - June 12, 2011. ● When durum resistant selections

nerice
Download Presentation

Races of P. graminis f. sp. tritici with virulence to Sr13 and Sr9e

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Races of P. graminis f. sp. tritici with virulence to Sr13 and Sr9e Olivera PD, Yahyaoui A, Badebo A, Rattu A, Rouse M, Ward R, Singh R, Fetch T, and Jin Y North American Rust Workshop St. Paul - June 12, 2011

  2. ● When durum resistant selections were evaluated in Debre Zeit, many became susceptible to stem rust ● Hypothesis: stem rust races in Debre Zeit may possess a virulence combination that overcome the TTKSK resistance Debre Zeit ● 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 Stem Rust Resistance in Durum

  3. ● 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 Race Identification ● Races: - 18 Isolates TTKSK - 12 Isolates JRCQC - 4 Isolates TRTTF

  4. Infection Types on North American Differential Set of Races JRCQC, TRTTF, and TTKSK

  5. Sr9e Sr13 JRCQC TRTTF TTKSK JRCQC TRTTF TTKSK Infection Types Produced by Races JRCQC, TRTTF, and TTKSK on Sr13 and Sr9e

  6. Reaction of Race JRCQC in Durum Cultivars Rusty Sceptre Mindum Iumillo-1 8155-B1 8155-B2 St464 Arnaukta Mindum Spelmar Kubanka Acme Vernal Khapli 47-1 Medora Leeds

  7. JRCQC TRTTF Infection types on 1AL.1RS of races JRCQC, TRTTF, and TTKSK

  8. ● 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 Race TRTTF

More Related