scholarly journals PCR Assays for the Lr37‐Yr17‐Sr38 Cluster of Rust Resistance Genes and Their Use to Develop Isogenic Hard Red Spring Wheat Lines

Crop Science ◽  
2003 ◽  
Vol 43 (5) ◽  
pp. 1839-1847 ◽  
Author(s):  
M. Helguera ◽  
I. A. Khan ◽  
J. Kolmer ◽  
D. Lijavetzky ◽  
L. Zhong‐qi ◽  
...  
Keyword(s):  
Spring Wheat ◽  
Resistance Genes ◽  
Rust Resistance ◽  
Hard Red Spring Wheat ◽  
Pcr Assays ◽  
Wheat Lines ◽  
Rust Resistance Genes

scholarly journals Inheritance of Leaf Rust Resistance in Wheat Cultivars Grandin and CDC Teal

Plant Disease ◽  
1997 ◽  
Vol 81 (5) ◽  
pp. 505-508 ◽  
Author(s):  
J. Q. Liu ◽  
J. A. Kolmer
Keyword(s):  
Leaf Rust ◽  
Spring Wheat ◽  
Resistance Genes ◽  
Rust Resistance ◽  
Leaf Rust Resistance ◽  
Adult Plant ◽  
Wheat Cultivars ◽  
Hard Red Spring Wheat ◽  
Rust Resistance Genes ◽  
Leaf Rust Resistance Genes

The hard red spring wheat cultivars Grandin and CDC Teal were genetically examined to determine the number and identity of the leaf rust resistance genes present in both wheats. The two cultivars were crossed with the leaf rust susceptible cultivar Thatcher, and the F1 plants were backcrossed to Thatcher. Fifty-four and 80 BC1F1 plants derived respectively from Grandin and CDC Teal were selfed to produce BC1F2 families. The BC1F2 families were tested as seedlings with isolates of Puccinia recondita f. sp. tritici that differed for virulence to specific leaf rust resistance genes. The BC1F2 families were also tested in the adult-plant stage in field rust nursery tests. Segregation of BC1F2 families in the seedling tests indicated that Grandin had resistance genes Lr2a, Lr3, and Lr10, and was heterogeneous for Lr16. CDC Teal was shown to have the seedling leaf rust gene Lr1. In field rust nursery tests, both Grandin and CDC Teal were shown to have adult-plant resistance genes Lr13 and Lr34. Additional leaf rust resistance genes that condition effective field resistance should be incorporated into hard red spring wheat cultivars to diversify the leaf rust resistance in this wheat class.

scholarly journals Mapping stripe rust resistance genes by BSR-Seq: YrMM58 and YrHY1 on chromosome 2AS in Chinese wheat lines Mengmai 58 and Huaiyang 1 are Yr17

2018 ◽  
Vol 6 (1) ◽  
pp. 91-98 ◽  
Author(s):  
Yong Wang ◽  
Huaizhi Zhang ◽  
Jingzhong Xie ◽  
Bingmin Guo ◽  
Yongxing Chen ◽  
...  
Keyword(s):  
Stripe Rust ◽  
Resistance Genes ◽  
Rust Resistance ◽  
Stripe Rust Resistance ◽  
Wheat Lines ◽  
Chinese Wheat ◽  
Rust Resistance Genes

scholarly journals Postulation of Leaf Rust Resistance Genes in Seven Chinese Spring Wheat Cultivars

2013 ◽  
Vol 12 (9) ◽  
pp. 1580-1588 ◽  
Author(s):  
Li-hong SHI ◽  
Na ZHANG ◽  
Ya-ya HU ◽  
Xue-jun WEI ◽  
Wen-xiang YANG ◽  
...  
Keyword(s):  
Leaf Rust ◽  
Spring Wheat ◽  
Resistance Genes ◽  
Chinese Spring ◽  
Rust Resistance ◽  
Leaf Rust Resistance ◽  
Wheat Cultivars ◽  
Chinese Spring Wheat ◽  
Rust Resistance Genes ◽  
Leaf Rust Resistance Genes

scholarly journals Evaluation and identification of stem rust resistance genesSr2,Sr24,Sr25,Sr26,Sr31andSr38in wheat lines from Gansu Province in China

PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e4146 ◽  
Author(s):  
Xiao Feng Xu ◽  
Dan Dan Li ◽  
Yang Liu ◽  
Yue Gao ◽  
Zi Yuan Wang ◽  
...  
Keyword(s):  
Resistance Genes ◽  
Stem Rust ◽  
Rust Resistance ◽  
Stem Rust Resistance ◽  
Gansu Province ◽  
Wheat Cultivars ◽  
Wheat Stem Rust ◽  
Stem Rust Resistance Genes ◽  
Wheat Lines ◽  
Rust Resistance Genes

Wheat stem rust, caused byPuccinia granimisf. sp.tritici, severely affects wheat production, but it has been effectively controlled in China since the 1970s. However, the appearance and spread of wheat stem rust races Ug99 (TTKSK, virulence toSr31), TKTTF (virulence toSrTmp) and TTTTF (virulence to the cultivars carryingSr9eandSr13) have received attention. It is important to clarify the effectiveness of resistance genes in a timely manner, especially for the purpose of using new resistance genes in wheat cultivars for durable-resistance. However, little is known about the stem rust resistance genes present in widely used wheat cultivars from Gansu. This study aimed to determine the resistance level at the seedling stage of the main wheat cultivars in Gansu Province. A secondary objective was to assess the prevalence ofSr2,Sr24,Sr25,Sr26,Sr31, andSr38using molecular markers. The results of the present study indicated that 38 (50.7%) wheat varieties displayed resistance to all the tested races ofPuccinia graminisf. sp.tritici.The molecular marker analysis showed that 13 out of 75 major wheat cultivars likely carriedSr2; 25 wheat cultivars likely carriedSr31; and nine wheat cultivars likely carriedSr38. No cultivar was found to haveSr25andSr26, as expected. Surprisingly, no wheat cultivars carriedSr24. The wheat lines with known stem rust resistance genes could be used as donor parent for further breeding programs.

scholarly journals Efficiency of leaf rust resistance genes in Martonvásár

2017 ◽  
Vol 38 (SI 2 - 6th Conf EFPP 2002) ◽  
pp. 593-595
Author(s):  
M. Gál ◽  
L. Szunics ◽  
G. Vida ◽  
Lu. Szunics ◽  
O. Veisz ◽  
...  
Keyword(s):  
Leaf Rust ◽  
Resistance Genes ◽  
Rust Resistance ◽  
Agricultural Research ◽  
Hungarian Academy ◽  
Leaf Rust Resistance ◽  
Wheat Lines ◽  
Moderately Resistant ◽  
Rust Resistance Genes ◽  
Leaf Rust Resistance Genes

The efficiency of leaf rust resistance genes in adult plants was studied on near-isogenic lines of Thatcher carrying known leaf rust resistance genes in the artificially inoculated leaf rust nursery of the Agricultural Research Institute of the Hungarian Academy of Sciences in Martonvásár over a five-year period (1997–2001). Eight of the wheat lines tested (Lr9, Lr19, Lr23, Lr24, Lr25, Lr29, Lr35, Lr37) exhibited little or no infection. Lines carrying genes Lr13, Lr44 and LrB were resistant in two years and those carrying Lr34, Lr38 and LrW in three years, after which they suffered moderate or heavy infection. Three lines (Lr12, Lr17, Lr32) proved to be moderately resistant. The majority of the wheat lines tested became heavily infected.

scholarly journals Characterization of Leaf Rust Resistance in Hard Red Spring Wheat Cultivars

Plant Disease ◽  
2004 ◽  
Vol 88 (10) ◽  
pp. 1127-1133 ◽  
Author(s):  
L. M. Oelke ◽  
J. A. Kolmer
Keyword(s):  
Leaf Rust ◽  
Spring Wheat ◽  
Resistance Genes ◽  
Rust Resistance ◽  
Leaf Rust Resistance ◽  
Adult Plant ◽  
Wheat Cultivars ◽  
Seedling Leaf ◽  
Rust Resistance Genes ◽  
Leaf Rust Resistance Genes

Leaf rust, caused by Puccinia triticina Eriks., is the most common disease of wheat (Triticum aestivum L.) in the United States and worldwide. The objective of this study was to characterize seedling and adult plant leaf rust resistance in hard red spring wheat cultivars grown in Minnesota, North Dakota, and South Dakota, and postulate the identity of the seedling leaf rust resistance genes in the cultivars. Twenty-six cultivars, near-isogenic lines of Thatcher wheat that differ for single leaf rust resistance genes, and three wheat cultivars with known leaf rust resistance genes, were tested with 11 different isolates of leaf rust collected from the United States and Canada. The leaf rust infection types produced on seedling plants of the cultivars in greenhouse tests were compared with the infection types produced by the same isolates on the Thatcher near-isogenic lines to postulate which seedling leaf rust resistance genes were present. Seedling leaf rust resistance genes Lr1, Lr2a, Lr10, Lr16, Lr21, and Lr24 were postulated to be present in spring wheat cultivars. Seedling genes Lr3, Lr14a, and Lr23 likely were present in some cultivars but could not be clearly identified in this study. Most of the cultivars had some level of adult plant leaf rust resistance, most likely due to Lr34. Cultivars that had seedling resistance genes Lr1, Lr2a, Lr10, or Lr16 had poor to intermediate levels of leaf rust resistance in field plots. Cultivars with combinations of seedling resistance genes Lr16 and Lr24 with additional adult plant resistance were highly resistant to leaf rust.

Registration of Spring Wheat Sources of Leaf Rust Resistance Genes Lr53 , Lr56 , Lr59 , and Lr62

2017 ◽  
Vol 12 (1) ◽  
pp. 157-161
Author(s):  
G. F. Marais ◽  
B. McCallum ◽  
J. A. Kolmer ◽  
S.-M. Pirseyedi ◽  
B. R. Bisek ◽  
...  
Keyword(s):  
Leaf Rust ◽  
Spring Wheat ◽  
Resistance Genes ◽  
Rust Resistance ◽  
Leaf Rust Resistance ◽  
Rust Resistance Genes ◽  
Leaf Rust Resistance Genes
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