Seedling resistance of selected Ethiopian bread and durum wheat lines against dominant stem rust races
- 13 Downloads
Stem rust caused by Puccinia graminis f. sp. tritici (Pgt) is one of the most important diseases of wheat in Ethiopia. It has a reputation to cause yield losses reaching up to 100% on susceptible cultivars. A study was conducted to evaluate the infection responses of 34 bread and 20 durum wheat lines at the seedling stage against four major stem rust races; TKTTF (Digalu race), TTKSK (Ug99 race), TRTTF and JRCQC. Wheat lines were artificially inoculated with urediniospores of the four Pgt races at Ambo Plant Protection Research Center in 2017, under controlled environment. Diverse seedling resistance responses were observed against the tested Pgt races. Three durum wheat lines TD56, TD393 and TD402 showed low infection types against all the races while the great majority (73%) of the tested bread wheat lines was susceptible to at least three of the races. The resistant durum wheat lines identified in this study can be used as sources of resistance in wheat breeding program.
KeywordsInfection types Pathotypes Uredinia Avirulent
We would like to appreciate the Ethiopian Biodiversity Institute for financially supporting the study. We thank the Wheat Rust Research Team of Ambo National Plant Protection Research Center for provision of the greenhouse and technical support during the whole period of the study.
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
Statement of human and animal rights
This article does not contain any studies with human or animal subjects performed by any of the authors.