The Virulence by Country tool, developed by the University of Aarhus Denmark, displays the frequency of virulence to specific combinations of Sr genes in analysed samples over time for a selected country. Selection of any Ug99 lineage race or specific … Continue reading
Search Results for: "Tanzania"
Predominant Pathotype(s): TTKST, Ug99 lineage race with combined virulence to Sr31 + Sr24 Effective Sr Genes: … Continue reading
[advanced_iframe securitykey=”da39a3ee5e6b4b0d3255bfef95601890afd80709″ src=”http://wheatatlas.org/rusttracker/production/TZA” width=”300″ height=”190″] Rust Issues: Stem rust is a constraint to wheat production. Ug99 Status: Three variants of Ug99 have been detected in Tanzania – Races: TTKSK (Ug99), TTTSK (Sr36 variant of Ug99) and TTKST (Sr24 variant of … Continue reading
Three variants in the Ug99 lineage have been confirmed in stem rust samples collected in Tanzania during August 2009 by a team of Tanzanian and international scientists. Races confirmed by the USDA-ARS Cereal Disease Laboratory, St. Paul, MN, USA were; … Continue reading
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
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
Effective / Ineffective stem rust Resistance Genes The following table summarizes the effective and ineffective stem rust resistance genes for races in the Ug99 lineage (based on Singh et al., 2006). TTKSK (Ug99) TTKSF TTKST (Ug99 + Sr24) TTTSK (Ug99 … Continue reading
Status Summary: Ug99 Lineage – September 2021 Race TTKSK (Ug99) was the first known race of P. graminis f. sp. tritici with virulence to the stem rust resistance gene Sr31. It also possesses virulence to a wide range of resistance … Continue reading
Additional reports of wheat stem rust were received from several African countries. In August, wheat stem rust was reported to be widespread in Tanzania. Wheat growing areas in Northern provinces and the Southern highlands both reported the presence of wheat … Continue reading