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
Search Results for: "Zimbabwe"
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
Predominant Pathotype(s): TTKSF, PTKST – Both Ug99 lineage races. PTKST has combined Sr31 + Sr24 virulence Effective Sr Genes: … Continue reading
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[advanced_iframe securitykey=”da39a3ee5e6b4b0d3255bfef95601890afd80709″ src=”http://wheatatlas.org/rusttracker/production/ZWE” width=”300″ height=”190″] Rust Issues: Stem and leaf rust are serious constraints to wheat production. Ug99 Status: Three variants of Ug99 have been detected in Zimbabwe. Race TTKSF (avirulent on Sr31) was first detected in 2009, race PTKST … Continue reading
Wheat rust surveys were undertaken by the Crop Breeding Institute and Plant Protection Research Institute throughout the key wheat growing areas of Zimbabwe during the period 19th – 24th September 2011. The primary focus of the surveys was to assess … Continue reading
Survey updates – Southern Africa Mozambique: Wheat rust surveys were undertaken by IIAM, Mozambique and FAO in the key wheat growing areas of Manica and Tete provinces, Central Mozambique during the period 26th August – 1st September 2010. Wheat in … Continue reading
stem rust samples collected near Harare in Sept 2009 have been confirmed as race TTKSF, the presumed progenitor of Ug99. Analysis undertaken by the University of the Free State, South Africa and the USDA-ARS, Cereals Disease Lab, Minnesota, USA confirmed … Continue reading
New molecular diagnostic assays are providing rapid and useful information on the Ug99 race group in Africa. The assays have been developed by the group led by Dr Les Szabo at the USDA-ARS Cereals Disease Laboratory in St Paul, Minnesota, … Continue reading
Analysis undertaken by the Small Grains Institute, Agricultural Research Council (ARC), South Africa indicated the continued predominance of stem rust race TTKSF in South Africa. Race TTKSF is one of the Ug99 lineage races, although it is avirulent on Sr31. … 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