Wheat is one of the most important cereal crops of Ethiopia. Stem rust caused by Puccinia graminis f. sp. tritici is amongst the biotic factors which can cause up to 100% yield loss if susceptible cultivar grown and epidemic occurs. The highland of Ethiopia is considered as a hot spot for the development of stem rust diversity. This study was carried out to determine virulence diversity and race distribution of P. graminis f. sp. tritici in Ethiopia. Eighty (80) wheat stem rust samples were collected in 2013 cropping season from Oromia, Amhara and Tigray region. Of the samples collected, 66 were analyzed on to the 20 stem rust differential lines. A total of 9 races were identified, which includes TTKSK, TTKTF, TTKTK, JRCQC, TKTTF, TTKSC, TRTTF, SRKSC and RRKSF. Race TTKSK was dominant and widely distributed in the Oromia and Amhara regions with 52% frequency; it was not isolated in Tigray region. The most virulent and new race, TKTTF which causes localized stem rust epidemic in Bale and Arsi was predominantly distributed in Oromia region with 36.4% frequency value. Most of the genes possessed by the differentials were ineffective against one or more of the tested isolates. Only stem rust resistance gene 24 was found to confer resistance to all of the races isolated in this study. This gene could be used in combination with other genes through gene pyramiding in breeding for resistance to stem rust in Ethiopia.
Published in | Plant (Volume 3, Issue 2) |
DOI | 10.11648/j.plant.20150302.11 |
Page(s) | 15-19 |
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This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
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Copyright © The Author(s), 2015. Published by Science Publishing Group |
Stem Rust Race, Puccinia graminis f. sp. tritici, Stem Rust Resistance Genes
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APA Style
Endale Hailu, Getaneh Woldaeb, Worku Denbel, Wubishet Alemu, Tekelay Abebe, et al. (2015). Distribution of Stem Rust (Puccinia graminis f. sp. tritici) Races in Ethiopia. Plant, 3(2), 15-19. https://doi.org/10.11648/j.plant.20150302.11
ACS Style
Endale Hailu; Getaneh Woldaeb; Worku Denbel; Wubishet Alemu; Tekelay Abebe, et al. Distribution of Stem Rust (Puccinia graminis f. sp. tritici) Races in Ethiopia. Plant. 2015, 3(2), 15-19. doi: 10.11648/j.plant.20150302.11
AMA Style
Endale Hailu, Getaneh Woldaeb, Worku Denbel, Wubishet Alemu, Tekelay Abebe, et al. Distribution of Stem Rust (Puccinia graminis f. sp. tritici) Races in Ethiopia. Plant. 2015;3(2):15-19. doi: 10.11648/j.plant.20150302.11
@article{10.11648/j.plant.20150302.11, author = {Endale Hailu and Getaneh Woldaeb and Worku Denbel and Wubishet Alemu and Tekelay Abebe and Agengehu Mekonnen}, title = {Distribution of Stem Rust (Puccinia graminis f. sp. tritici) Races in Ethiopia}, journal = {Plant}, volume = {3}, number = {2}, pages = {15-19}, doi = {10.11648/j.plant.20150302.11}, url = {https://doi.org/10.11648/j.plant.20150302.11}, eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.plant.20150302.11}, abstract = {Wheat is one of the most important cereal crops of Ethiopia. Stem rust caused by Puccinia graminis f. sp. tritici is amongst the biotic factors which can cause up to 100% yield loss if susceptible cultivar grown and epidemic occurs. The highland of Ethiopia is considered as a hot spot for the development of stem rust diversity. This study was carried out to determine virulence diversity and race distribution of P. graminis f. sp. tritici in Ethiopia. Eighty (80) wheat stem rust samples were collected in 2013 cropping season from Oromia, Amhara and Tigray region. Of the samples collected, 66 were analyzed on to the 20 stem rust differential lines. A total of 9 races were identified, which includes TTKSK, TTKTF, TTKTK, JRCQC, TKTTF, TTKSC, TRTTF, SRKSC and RRKSF. Race TTKSK was dominant and widely distributed in the Oromia and Amhara regions with 52% frequency; it was not isolated in Tigray region. The most virulent and new race, TKTTF which causes localized stem rust epidemic in Bale and Arsi was predominantly distributed in Oromia region with 36.4% frequency value. Most of the genes possessed by the differentials were ineffective against one or more of the tested isolates. Only stem rust resistance gene 24 was found to confer resistance to all of the races isolated in this study. This gene could be used in combination with other genes through gene pyramiding in breeding for resistance to stem rust in Ethiopia.}, year = {2015} }
TY - JOUR T1 - Distribution of Stem Rust (Puccinia graminis f. sp. tritici) Races in Ethiopia AU - Endale Hailu AU - Getaneh Woldaeb AU - Worku Denbel AU - Wubishet Alemu AU - Tekelay Abebe AU - Agengehu Mekonnen Y1 - 2015/05/11 PY - 2015 N1 - https://doi.org/10.11648/j.plant.20150302.11 DO - 10.11648/j.plant.20150302.11 T2 - Plant JF - Plant JO - Plant SP - 15 EP - 19 PB - Science Publishing Group SN - 2331-0677 UR - https://doi.org/10.11648/j.plant.20150302.11 AB - Wheat is one of the most important cereal crops of Ethiopia. Stem rust caused by Puccinia graminis f. sp. tritici is amongst the biotic factors which can cause up to 100% yield loss if susceptible cultivar grown and epidemic occurs. The highland of Ethiopia is considered as a hot spot for the development of stem rust diversity. This study was carried out to determine virulence diversity and race distribution of P. graminis f. sp. tritici in Ethiopia. Eighty (80) wheat stem rust samples were collected in 2013 cropping season from Oromia, Amhara and Tigray region. Of the samples collected, 66 were analyzed on to the 20 stem rust differential lines. A total of 9 races were identified, which includes TTKSK, TTKTF, TTKTK, JRCQC, TKTTF, TTKSC, TRTTF, SRKSC and RRKSF. Race TTKSK was dominant and widely distributed in the Oromia and Amhara regions with 52% frequency; it was not isolated in Tigray region. The most virulent and new race, TKTTF which causes localized stem rust epidemic in Bale and Arsi was predominantly distributed in Oromia region with 36.4% frequency value. Most of the genes possessed by the differentials were ineffective against one or more of the tested isolates. Only stem rust resistance gene 24 was found to confer resistance to all of the races isolated in this study. This gene could be used in combination with other genes through gene pyramiding in breeding for resistance to stem rust in Ethiopia. VL - 3 IS - 2 ER -