Rwanda Stem Rust Pathotypes

Data Source: USDA-ARS CDL, Minnesota Predominant Pathotype(s): TTKSK (Ug99) Effective Sr Genes: SrTmp, Sr24 Ineffective Sr Genes: Sr5, Sr21, Sr9e, Sr7b, Sr11, Sr6, Sr8a, Sr9g, Sr36, Sr9b, Sr30, Sr17, Sr9a, Sr9d, Sr10, Sr31, Sr38, SrMcN … Continue reading

Rwanda Survey Mapper

The Country Survey Mapper tool, developed by the University of Aarhus Denmark, displays rust field survey data. Selection of any specific combination of year and disease is possible. Any new data incorporated into the underlying database will automatically be displayed … Continue reading

Rwanda

  Rust Issues: Yellow rust and stem rust are serious constraints to wheat production. Ug99 Status: Two Ug99 lineage races have currently been detected in Rwanda. Race TTKSK (Ug99) and race TTTSK (Ug99+Sr36) were detected in 2014. Race TTKSK predominates. … Continue reading

Dec 20, 2015: Five new variants of Ug99 confirmed from 2013/2014 samples in East Africa

Combined results from race analysis undertaken at several different labs indicate that five new variants in the Ug99 lineage were detected from samples collected in East Africa during 2013 or 2014. Probably most significant were the two new SrTmp variants … Continue reading

Sep 2, 2015: Emergence and spread of virulence to SrTmp in the Ug99 race group in Africa – note published in Plant Disease

Mehran Patpour (Global Rust Reference Center in Denmark) and co-authors have just published details of the emergence and spread of virulence to SrTmp in the Ug99 race group in Africa. The note is now available as a First Look in … Continue reading

Feb 4, 2015: Preliminary report for Puccinia striifromis race analysis 2014 published by Global Rust Reference Center (GRRC), Aarhus University, Denmark.

Following the recent release of the 2013 stripe rust report, the Global Rust Reference Center in Denmark has now just published the latest report detailing the results of race analysis for ¬†Puccinia striifromis samples submitted during the period January – … Continue reading

Alert – Jan 9, 2015: Summary of Ethiopia 2014/15 rust situation. Re-current, localized stem rust epidemics caused by race TKTTF (“Digalu” race) in Ethiopia. Extreme caution and vigilance needed in East Africa

Following the localized stem rust epidemics in Ethiopia on the cultivar “Digalu” in 2013/14 (see report 23rd Dec 2013); continued, severe stem rust outbreaks have been observed in the 2014/15 main season. Once again the popular cultivar “Digalu” has been … Continue reading

ALERT – Dec 23, 2013: LOCALIZED STEM RUST EPIDEMIC IN SOUTHERN ETHIOPIA. EXTREME CAUTION AND VIGILANCE NEEDED IN EAST AFRICA AND MIDDLE EAST REGION

A severe, localised stem rust epidemic has broken out in southern Ethiopia during November-December 2013. The districts of Agarfa and Gasera in Bale zone are the most seriously affected, but some spread into other areas is now being reported. The … Continue reading