Haplotype analysis of molecular markers linked to stem rust resistance genes in Ethiopian improved durum wheat varieties and tetraploid wheat landraces

2012 ◽  
Vol 60 (3) ◽  
pp. 853-864 ◽  
Author(s):  
Jemanesh K. Haile ◽  
Karl Hammer ◽  
Ayele Badebo ◽  
Ravi P. Singh ◽  
Marion S. Röder
Keyword(s):  
Molecular Markers ◽  
Resistance Genes ◽  
Stem Rust ◽  
Rust Resistance ◽  
Haplotype Analysis ◽  
Tetraploid Wheat ◽  
Stem Rust Resistance ◽  
Wheat Varieties ◽  
Stem Rust Resistance Genes ◽  
Rust Resistance Genes

scholarly journals Identification of stem rust resistance genes in wheat cultivars in China using molecular markers

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e4882 ◽  
Author(s):  
Xiaofeng Xu ◽  
Depeng Yuan ◽  
Dandan Li ◽  
Yue Gao ◽  
Ziyuan Wang ◽  
...  
Keyword(s):  
Molecular Markers ◽  
Resistance Genes ◽  
Stem Rust ◽  
Rust Resistance ◽  
Genetic Material ◽  
Stem Rust Resistance ◽  
Wheat Cultivars ◽  
Wheat Stem Rust ◽  
Stem Rust Resistance Genes ◽  
Rust Resistance Genes

Wheat stem rust caused by Puccinia graminis f. sp. tritici Eriks. & E. Henn. (Pgt), is a major disease that has been effectively controlled using resistance genes. The appearance and spread of Pgt races such as Ug99, TKTTF, and TTTTF, which are virulent to most stem rust-resistant genes currently deployed in wheat breeding programs, renewed the interest in breeding cultivars resistant to wheat stem rust. It is therefore important to investigate the levels of resistance or vulnerability of wheat cultivars to Pgt races. Resistance to Pgt races 21C3CTHQM, 34MKGQM, and 34C3RTGQM was evaluated in 136 Chinese wheat cultivars at the seedling stage. A total of 124 cultivars (91.2%) were resistant to the three races. Resistance genes Sr2, Sr24, Sr25, Sr26, Sr31, and Sr38 were analyzed using molecular markers closely linked to them, and 63 of the 136 wheat cultivars carried at least one of these genes: 21, 25, and 28 wheat cultivars likely carried Sr2, Sr31, and Sr38, respectively. Cultivars “Kehan 3” and “Jimai 22” likely carried Sr25. None of the cultivars carried Sr24 or Sr26. These cultivars with known stem rust resistance genes provide valuable genetic material for breeding resistant wheat cultivars.

scholarly journals Validation of Molecular Markers for New Stem Rust Resistance Genes in U.S. Hard Winter Wheat

Crop Science ◽  
2013 ◽  
Vol 53 (3) ◽  
pp. 755-764 ◽  
Author(s):  
Amy N. Bernardo ◽  
Robert L. Bowden ◽  
Matthew N. Rouse ◽  
Maria S. Newcomb ◽  
David S. Marshall ◽  
...  
Keyword(s):  
Molecular Markers ◽  
Winter Wheat ◽  
Resistance Genes ◽  
Stem Rust ◽  
Rust Resistance ◽  
Stem Rust Resistance ◽  
Stem Rust Resistance Genes ◽  
Rust Resistance Genes

Validation of molecular markers linked to the stem rust resistance genes effective in India

2013 ◽  
Vol 73 (3) ◽  
pp. 314
Author(s):  
N. R. Nagaraja ◽  
Anupam Singh ◽  
J. K. Pallavi ◽  
J. B. Sharma ◽  
G. P. Singh ◽  
...  
Keyword(s):  
Molecular Markers ◽  
Resistance Genes ◽  
Stem Rust ◽  
Rust Resistance ◽  
Stem Rust Resistance ◽  
Stem Rust Resistance Genes ◽  
Rust Resistance Genes

scholarly journals Postulation of seedling stem rust resistance genes of Yunnan wheat cultivars in China

2016 ◽  
Vol 52 (No. 4) ◽  
pp. 242-249 ◽  
Author(s):  
Li Tian-ya ◽  
Wu Xian-xin ◽  
Xu Xiao-feng ◽  
Wang Wan-lin ◽  
Cao Yuan-yin
Keyword(s):  
Resistance Genes ◽  
Stem Rust ◽  
Rust Resistance ◽  
Stem Rust Resistance ◽  
Wheat Varieties ◽  
Plant Materials ◽  
Resistant Varieties ◽  
Stem Rust Resistance Genes ◽  
Sr Genes ◽  
Rust Resistance Genes

To determine stem rust resistance genes of wheat varieties in Yunnan province, 11 Chinese strains of Puccinia graminis f.sp. tritici with different virulence and 1 artificial mutant strain were used in 110 wheat varieties. The results indicated that among the 45 Sr genes, Sr31, Sr5, SrTmp, Sr30, Sr36, Sr8a, Sr11, Sr24, Sr29, Sr34, Sr9e, Sr26, Sr38, Sr47, and SrTt3 were characterised in 55 wheat varieties singly or in combination. Sr5, Sr31, SrTmp, Sr36, and Sr30 were contained in 17, 16, 5, 5, and 3 cultivars, respectively. Six cultivars contained Sr24 and/or Sr34. Three plant materials likely contained one or more of Sr8a, Sr11, Sr34, and Sr23 genes as well as other unknown genes. The 16 immune or highly resistant varieties contained one or more of Sr9e, Sr26, Sr38, Sr47, SrTt3, and other unknown resistance genes. The reaction types on 22 of the tested cultivars were different from those on Sr genes tested, and their resistance genes could not be analysed. Additionally, 17 varieties were susceptible to all the tested strains, having no postulation value. Our study provides a basis for improved breeding of stem rust resistant wheat in China.

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