Distribution and Physiologic Races of Wheat Yellow Rust (Puccinia striiformis West f.sp. tritici) in Syria During The Cropping Season 1999-2000 and 2000-2001

A number of diseases attack wheat crop in Syria. Yellow rust or stripe rust (Puccinia striiformis West f. sp. tritici) is considered the most important rust disease of wheat in the cool and humid wheat growing area. The disease spread in all wheat growing areas in Syria specially in the irrigated and humid area. To identifey the distribution and severity of the disease during the two seasons 1999-2000 and 2000-2001، field survey have been conducted in 76 fields in the first season and 73 fields in the second season in different wheat growing area in Syria.