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Wheat Leaf rust caused by the pathogen Puccinia triticina is a serious threat of wheat production in Ethiopia, yield loss due tothis disease reached up to 70%. A study was carried out to identify leaf rust adult plant resistance in commercial durum wheatcultivars and landraces. 35 durum wheat Varieties and 200 durum wheat landraces with three susceptible checks arranged inAugment design and evaluated against leaf rust at Debere Zeit Agricultural Research Center, Ethiopia during the 2017/18 mainseason. Terminal Rust Severity (TRS), Coefficient of Infection (CI), Area under Disease Progress Curve (AUDPC) and Disease Progress Rate (DPR) were used to measure leaf rust adult plant resistance in the test materials. Analysis of all disease parameters was carried out using SPAD software. There were highly significant differences (P |
