This tool displays the frequencies by country of Puccinia striiformis races or race groups as recorded in Europe, Africa and Asia, and in America during the period 2000 until current year.

• Select races or race groups via the radio buttons
• Select the region.
• Select one or more years to include.
• Select “All” to select all years, or, deselect all year. 
• The country ID code and the number of isolates included is noted below the pie charts
• The definition of races is given below