+ 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 of leaf rust resistance genes in selected soft red winter wheats



Postulation of leaf rust resistance genes in selected soft red winter wheats



Crop Science 43(4): 1266-1274



Leaf rust, caused by the fungus Puccinia triticina Eriks., is a major disease nearly wherever wheat (Triticum spp.) is grown in the USA. Soft red winter wheat (T. aestivum L.) cultivars with varying degrees of leaf rust resistance are grown in the southern USA. The objective of this study was to characterize the seedling leaf rust resistance present in a group of 35 soft red winter wheat cultivars and 17 breeding lines. Leaf rust infection types (ITs) produced on the cultivars and lines by 16 P. triticina isolates were compared with the ITs produced on a standard set of 'Thatcher' near-isogenic lines that differed for single leaf rust resistance genes. Seedling resistance genes Lr1, Lr2a, Lr9, Lr10, Lr11, Lr18, and Lr26 were postulated to be present in the soft red winter wheat cultivars and lines. Adult plant leaf rust resistance for the cultivars and lines was assessed in field plots at two locations in North Carolina in 2000. Wheat cultivars postulated or genetically determined to have the adult plant resistance genes Lr12 and Lr34 had effective leaf rust resistance in the field plots. The soft red winter wheat cultivars and lines that had seedling resistance genes Lr2a, Lr9, and Lr26 combined with adult plant resistance were highly resistant to leaf rust. Cultivars and breeding lines that had seedling resistance genes Lr1, Lr10, Lr11, and Lr18 combined with adult plant resistance had moderate to low levels of leaf rust resistance.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 066170179

Download citation: RISBibTeXText

DOI: 10.2135/cropsci2003.1266


Related references

Genes for seedling and adult-plant resistance to leaf rust in soft red winter wheats. Phytopathology 92(6 Suppl.): S84, 2002

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

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

Development of a PCR Assay and Marker-Assisted Transfer of Leaf Rust and Stripe Rust Resistance Genes Lr57 and Yr40 into Hard Red Winter Wheats. Crop Science 49(1): 120-126, 2009

Evaluation of leaf rust (Puccinia triticina) and yellow rust (P. striiformis f.sp. tritici) resistance in 20 Swedish wheats and identification of leaf rust resistance genes. Minor Field Studies International Office, Swedish University of Agricultural Sciences (160): 60 pp., 2001

Chromosome locations of leaf rust resistance genes in selected tetraploid wheats through substitution lines. Euphytica 141(3): 209-216, 2005

Postulation of genes for leaf rust resistance in 28 Chinese wheat. Acta Agronomica Sinica 19(3): 268-275, 1993

Postulation of leaf rust resistance (Lr) genes in some wheat genotypes. Plant Disease Research 17(2): 297-302, 2002

Postulation and validation of leaf rust resistance genes in breadwheat cultivars huw 12 and wh 322. Indian Journal of Genetics and Plant Breeding 48(1): 59-62, 1988

Postulation of genes (Lr) for resistance to leaf rust in Brazilian wheat cultivars. Fitopatologia Brasileira 27(5): 508-516, 2002

Postulation of genes for stem rust resistance in selected wheat lines from Nepal. Indian Phytopathology 58(1): 75-78, 2005

Seedling Resistance Genes to Leaf Rust in Soft Red Winter Wheat. Plant Disease 88(2): 136-146, 2004

Postulation of Leaf Rust Resistance Genes in Seven Chinese Spring Wheat Cultivars. Journal of Integrative Agriculture 12(9): 1580-1588, 2013

Effectiveness of leaf rust resistance genes and resistance of registered winter wheat cultivars to leaf rust and yellow rust in Slovakia. Arbeitstagung 2001 der Vereinigung der Pflanzenzuchter und Saatgutkaufleute Osterreichs gehalten vom 20 bis 22 November 2001 in Gumpenstein, Irdning, Austria: 21-24, 2002