Molecular Markers Detect Redundancy and Miss-identity in Genetic Stocks with Alien Leaf Rust Resistance Genes Lr32 and Lr28 in Bread Wheat

2003 ◽  
Vol 12 (2) ◽  
pp. 123-129 ◽  
Author(s):  
K. V. Prabhu ◽  
S. K. Gupta ◽  
A. Charpe ◽  
S. Koul ◽  
D. P. Cherukuri ◽  
...  
Keyword(s):  
Molecular Markers ◽  
Leaf Rust ◽  
Bread Wheat ◽  
Resistance Genes ◽  
Rust Resistance ◽  
Leaf Rust Resistance ◽  
Genetic Stocks ◽  
Rust Resistance Genes ◽  
Leaf Rust Resistance Genes

scholarly journals Identification of leaf rust resistance genes i n selected Argentinean bread wheat cultivars by gene postulation and molecular markers

2011 ◽  
Vol 14 (3) ◽  
Author(s):  
Leonardo Sebastián Vanzetti ◽  
Pablo Campos ◽  
Melina Demichelis ◽  
Lucio Andres Lombardo ◽  
Paola Romina Aurelia ◽  
...  
Keyword(s):  
Molecular Markers ◽  
Leaf Rust ◽  
Bread Wheat ◽  
Resistance Genes ◽  
Rust Resistance ◽  
Leaf Rust Resistance ◽  
Wheat Cultivars ◽  
Gene Postulation ◽  
Rust Resistance Genes ◽  
Leaf Rust Resistance Genes

Validating molecular markers for barley leaf rust resistance genes Rph5 and Rph7

2007 ◽  
Vol 126 (5) ◽  
pp. 458-463 ◽  
Author(s):  
J. A. Mammadov ◽  
W. S. Brooks ◽  
C. A. Griffey ◽  
M. A. Saghai Maroof
Keyword(s):  
Molecular Markers ◽  
Leaf Rust ◽  
Resistance Genes ◽  
Rust Resistance ◽  
Leaf Rust Resistance ◽  
Barley Leaf Rust ◽  
Barley Leaf ◽  
Rust Resistance Genes ◽  
Leaf Rust Resistance Genes

Marker-assisted pyramiding of Thinopyrum-derived leaf rust resistance genes Lr19 and Lr24 in bread wheat variety HD2733

2017 ◽  
Vol 96 (6) ◽  
pp. 951-957 ◽  
Author(s):  
Mona Singh ◽  
N. Mallick ◽  
S. Chand ◽  
P. Kumari ◽  
J. B. Sharma ◽  
...  
Keyword(s):  
Leaf Rust ◽  
Bread Wheat ◽  
Resistance Genes ◽  
Rust Resistance ◽  
Wheat Variety ◽  
Leaf Rust Resistance ◽  
Rust Resistance Genes ◽  
Bread Wheat Variety ◽  
Leaf Rust Resistance Genes

scholarly journals Breeding of common wheat for leaf rust resistance using DNA markers

2020 ◽  
Author(s):  
E.R. Davoyan ◽  
◽  
L.A. Bespalova ◽  
R.O. Davoyan ◽  
E.V. Agaeva ◽  
...  
Keyword(s):  
Molecular Markers ◽  
Leaf Rust ◽  
Common Wheat ◽  
Resistance Genes ◽  
Rust Resistance ◽  
Leaf Rust Resistance ◽  
Selected Lines ◽  
Rust Resistance Genes ◽  
Leaf Rust Resistance Genes

The article presents the results of the characterization of 277 lines of common wheat developed in the National Center of Grain named after P.P. Lukyanenko by the presence of molecular markers linked to leaf rust resistance genes Lr9, Lr19, Lr24, Lr37, Lr26. Lines with Lr9 and Lr19 were not identified. We detected 52 lines carrying Lr24; 80 lines with Lr26; 141 lines with Lr37. Lines carrying a combination of leaf rust resistance genes were selected using molecular markers. The presence of a combination of Lr37 + Lr26 was established in 31 lines. The combination of Lr24 + Lr26 was detected in 12 lines. Line 125-15 Ms 2 carries a combination of Lr37 + Lr24. A pyramid of three genes was found in the line 144-15 Ms 2. Currently, the selected lines are widely involved in the breeding process.

scholarly journals Evaluation of Wheat Germplasm for Resistance to Leaf Rust (Puccinia triticina) and Identification of the Sources of Lr Resistance Genes Using Molecular Markers

Plants ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1484
Author(s):  
Alma Kokhmetova ◽  
Shynbolat Rsaliyev ◽  
Makpal Atishova ◽  
Madina Kumarbayeva ◽  
Angelina Malysheva ◽  
...  
Keyword(s):  
Molecular Markers ◽  
Leaf Rust ◽  
Spring Wheat ◽  
Resistance Genes ◽  
Rust Resistance ◽  
Puccinia Triticina ◽  
Leaf Rust Resistance ◽  
Seedling Resistance ◽  
Rust Resistance Genes ◽  
Leaf Rust Resistance Genes

Leaf rust, caused by Puccinia triticina (Ptr), is a significant disease of spring wheat spread in Kazakhstan. The development of resistant cultivars importantly requires the effective use of leaf rust resistance genes. This study aims to: (i) determine variation in Ptr population using races from the East Kazakhstan, Akmola, and Almaty regions of Kazakhstan; (ii) examine resistance during seedling and adult plant stages; and (iii) identify the sources of Lr resistance genes among the spring wheat collection using molecular markers. Analysis of a mixed population of Ptr identified 25 distinct pathotypes. Analysis of these pathotypes using 16 Thatcher lines that are near-isogenic for leaf rust resistance genes (Lr) showed different virulence patterns, ranging from least virulent “CJF/B” and “JCL/G” to highly virulent “TKT/Q”. Most of the pathotypes were avirulent to Lr9, Lr19, Lr24, and Lr25 and virulent to Lr1, Lr2a, Lr3ka, Lr11, and Lr30. The Ptr population in Kazakhstan is diverse, as indicated by the range of virulence observed in five different races analyzed in this study. The number of genotypes showed high levels of seedling resistance to each of the five Ptr races, thus confirming genotypic diversity. Two genotypes, Stepnaya 62 and Omskaya 37, were highly resistant to almost all five tested Ptr pathotypes. Stepnaya 62, Omskaya 37, Avangard, Kazakhstanskaya rannespelaya, and Kazakhstanskaya 25 were identified as the most stable genotypes for seedling resistance. However, most of the varieties from Kazakhstan were susceptible in the seedling stage. Molecular screening of these genotypes showed contrasting differences in the genes frequencies. Among the 30 entries, 22 carried leaf rust resistance gene Lr1, and two had Lr9 and Lr68. Lr10 and Lr28 were found in three and four cultivars, respectively. Lr19 was detected in Omskaya 37. Two single cultivars separately carried Lr26 and Lr34, while Lr37 was not detected in any genotypes within this study. Field evaluation demonstrated that the most frequent Lr1 gene is ineffective. Kazakhstanskaya 19 and Omskaya 37 had the highest number of resistance genes: three and four Lr genes, respectively. Two gene combinations (Lr1, Lr68) were detected in Erythrospermum 35 and Astana. The result obtained may assist breeders in incorporating effective Lr genes into new cultivars and developing cultivars resistant to leaf rust.

scholarly journals Postulation of Seedling Leaf Rust Resistance Genes in Selected Ethiopian and German Bread Wheat Cultivars

Crop Science ◽  
2008 ◽  
Vol 48 (2) ◽  
pp. 507-516 ◽  
Author(s):  
Sewalem A. Mebrate ◽  
Heinz-W. Dehne ◽  
Klaus Pillen ◽  
Erich-C. Oerke
Keyword(s):  
Leaf Rust ◽  
Bread Wheat ◽  
Resistance Genes ◽  
Rust Resistance ◽  
Leaf Rust Resistance ◽  
Wheat Cultivars ◽  
Seedling Leaf ◽  
Rust Resistance Genes ◽  
Leaf Rust Resistance Genes

scholarly journals Physiologic Specialization of Puccinia triticina in Canada in 1998

Plant Disease ◽  
2001 ◽  
Vol 85 (2) ◽  
pp. 155-158 ◽  
Author(s):  
J. A. Kolmer
Keyword(s):  
Leaf Rust ◽  
Bread Wheat ◽  
Resistance Genes ◽  
Rust Resistance ◽  
Puccinia Triticina ◽  
Leaf Rust Resistance ◽  
Adult Plant ◽  
Wheat Cultivars ◽  
Rust Resistance Genes ◽  
Leaf Rust Resistance Genes

In 1998, leaf rust of wheat (Triticum aestivum), caused by Puccinia triticina, was widespread throughout the prairies of western Canada. Warm summer temperatures with frequent dew periods favored spread of the disease in wheat fields in Manitoba and Saskatchewan. The Canada Prairie Spring wheat cultivars (AC Vista, AC Foremost, AC Crystal) were susceptible to leaf rust, while the bread wheat cultivars with leaf rust resistance genes Lr16 and Lr13 or Lr34 (AC Majestic, AC Domain, AC Barrie) had high to moderate levels of leaf rust infections. Bread wheat cultivars AC Cora, AC Minto, Pasqua, and McKenzie had trace to low levels of leaf rust infection. Thirty-four virulence phenotypes of P. triticina were identified on 16 Thatcher lines, which are near-isogenic for leaf rust resistance genes. Phenotypes with virulence to Lr16 increased to 25% of isolates in Manitoba and Saskatchewan in 1998. Forty-three isolates were also tested for virulence to plants with the adult plant resistance genes Lr12, Lr13, Lr34, and Lr13,34. Most isolates had virulence to Lr12 and Lr13. All isolates had lower infection type on adult plants with Lr34 compared with Thatcher.

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