+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Postulation and Mapping of Seedling Stripe Rust Resistance Genes in ETHIOPIAN BREAD WHEAT CULTIVARS

Postulation and Mapping of Seedling Stripe Rust Resistance Genes in ETHIOPIAN BREAD WHEAT CULTIVARS

Journal of Plant Pathology 94(2): 403-409

Stripe rust caused by Puccinia striiformis f. sp. tritici (Pst), is one of the most important diseases of wheat worldwide. In Ethiopia, grain yield loss in wheat cultivars ranges from 30 to 69%. The use of resistant cultivars is the most economical and environmentally friendly method of controlling the disease. Gene postulation which is based on the gene-for-gene interaction between the host line and the pathogen races is commonly used to determine resistance genes in wheat cultivars. In the present study Yr genes in 22 bread wheat cultivars were studied by testing them, together with the 24 differential lines, with 20 Pst races that were collected from Ethiopia, France and Germany. These cultivars were postulated to have different combinations of stripe rust resistance genes Yr2, Yr3a, Yr4a, Yr6, Yr7, Yr8, Yr9, Yr27, Yr32 and YrSU. Among these genes, Yr2, Yr6, Yr7, Yr8, Yr9, Yr27 and Yr32 could not provide adequate control. This indicates the need for searching more effective resistance genes to be incorporated in Ethiopian bread wheat cultivars. Bread wheat cultivars Wabe and Tusie were resistant to all 20 races, similar to the differential lines with Yr5, Yr15 and Yr26. In addition, due to the absence of matching response spectra to the tested differential genotypes, the Yr gene(s) in bread wheat cultivar Suf-Omer could not be determined. However, the molecular experiments mapped Yr genes in cvs Wabe and Tusie on chromosome 7BL and 3BL in cv. Suf-Omer, showing that the resistance in these cultivars are governed by genes different from Yr5 (2BL), Yr15 (1BL), and Yr26 (1BS).

Please choose payment method:

(PDF emailed within 1 workday: $29.90)

Accession: 066266022

Download citation: RISBibTeXText

Related references

Postulation of seedling leaf rust resistance genes in selected Ethiopian and German bread wheat cultivars. Crop Science 48(2): 507-516, 2008

Postulation of stripe rust resistant genes in some Australian bread wheat cultivars and their response to temperature. Pakistan Journal Of Botany: 6, 2573-2585, 2008

Postulation of resistance genes to stripe rust in common wheat cultivars from Sichuan province. Southwest China Journal of Agricultural Sciences 18(4): 422-426, 2005

Postulation of resistance genes to stripe rust in commercial wheat cultivars from Henan, Shandong and Anhui provinces. Acta Phytopathologica Sinica 30(2): 122-128, 2000

Characterization of molecular diversity and genome-wide mapping of loci associated with resistance to stripe rust and stem rust in Ethiopian bread wheat accessions. Bmc Plant Biology 17(1): 134, 2017

Postulation of seedling leaf rust resistance genes in 84 Chinese winter wheat cultivars. Journal of Integrative Agriculture 14(10): 1992-2001, 2015

Postulation of Seedling Stem Rust Resistance Genes of Yunnan Wheat Cultivars in China. Plant Protection Science 52(4): 242-249, 2016

Postulation of leaf rust resistance genes in 47 new wheat cultivars (lines) at seedling stage. Scientia Agricultura Sinica 40(9): 1925-1935, 2007

Postulation of Seedling Resistance Genes in 20 Wheat Cultivars to Yellow Rust (Puccinia striiformis f. sp. tritici). Agricultural Sciences in China 8(12): 1429-1439, 2009

Identification of leaf rust resistance genes in selected Argentinean bread wheat cultivars by gene postulation and molecular markers. Electronic Journal of Biotechnology 14(3): 14, 2011

Characterisation of stem rust and stripe rust seedling resistance genes in selected wheat cultivars from the United Kingdom. Journal Of Plant Pathology: 3, 553-562, 2008

Gene postulation of resistance genes to leaf rust (Puccinia triticina Ericks.) on seedling and adult plant of bread wheat (Triticum aestivum L.) elite genotypes. Revista Mexicana de Fitopatologia 21(3): 239-247, 2003

Mapping of adult plant stripe rust resistance genes in diploid A genome wheat species and their transfer to bread wheat. Tag. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik 116(3): 313-324, 2008

Genetic analysis and molecular mapping of wheat genes conferring resistance to the wheat stripe rust and barley stripe rust pathogens. Phytopathology 95(4): 427-432, 2005

Postulation of resistance genes and assessment of adult plant response variation for stripe rust in three international wheat nurseries. Indian Journal of Genetics and Plant Breeding 74(1): 1-9, 2014