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Response of Ethiopia Durum Wheat Accessions for Resistance to Stem Rust (Puccinia graminis f.sp. Tritici) Disease
Silas Chiko*, Mesfin Kebede, Daniel Shimelash
The horizontal resistance is effective against broad range of pathogen races and even reduces the costs of fungicides for controlling. The objective of present study is based on the field assessment of adult resistance genes in Ethiopia durum wheat accessions for resistance to stem rust (Puccinia graminis f.sp. tritici). The 142 durum wheat accessions were obtained from the Ethiopian Biodiversity Institute and screening for stem rust in Debrezeit agricultural research experimental fields using alpha lattice design. The bulk of races (TTKSK (Ug99), TTTTF, TTRTF, JRCQC, TKTTF) inoculated during stem elongation stage. The disease assessment started the first symptom of seen in infector rows. In the field, durum accessions were examined utilizing for slow rust parameters. Accordingly, to that the 23 accessions were identified having low value of terminal rust resistance, low average coefficient of infection and low area under disease progress curve. The grain yield is negative and highly significant associated with slow rusting parameters. These accessions considered as having adult resistance genes with high partial resistance genes and important for further resistance breeding.