Field Evaluation of Bread Wheat Genotypes for the Source of Resistance to Stem Rust Disease (Puccinia graminisi f. sp. tritici) in Ethiopia

Deployment of resistant genotypes to the pathogen resistance is the best and successful strategies to improve the epidemics of stem rust disease which is the most sustainable and lucrative tactics to meet the needs of stake holders of wheat producers. Thus, the present study was performed to meet objective of examining novel sources of Ethiopian bread wheat genotypes resistance to stem (black) rust in dedicated disease screening site. A total of one thousand one hundred sixty four genotypes sourced 606 local cross, 452 CIMMYT introductions, 95 ICARDA sources and 11 released varieties used for Rating Reference Set (RRS) exhibited 0.3%, 0.1%, 1.5%, 14.6%, 6.7%, 0.8, 73.8 and 2.2% with genotype response of Immune (0), Resistant (R), Moderately Resistant (MR), Moderately Resistant to Moderately Susceptible (MRMS), Moderately Susceptible (MS), Moderately Susceptible to Susceptible (MSS), Susceptible (S) and Very Susceptible (VS) respectively. Of the 1164 tested genotypes 188 (16.2%) genotypes exhibited 1, 17 and 170 genotypes showed resistant, moderately resistant and moderately resistant to moderately susceptible disease response respectively, are identified as good sources of resistance to stem rust with impressive significance to attain the existing breeding program for long lasting resistance.

Author(s): Alemu Ayele Zerihun*, Getnet Muche Abebele, Daniel Kassa Mariam and Tamirat Negash Gure

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