GENETICS OF RESISTANCE TO LEAF RUST IN TWO ACCESSIONS OF COMMON WHEAT

1989 ◽  
Vol 69 (2) ◽  
pp. 531-534 ◽  
Author(s):  
P. L. DYCK ◽  
P. E. JEDEL
Keyword(s):  
Triticum Aestivum ◽  
Leaf Rust ◽  
Rust Resistance ◽  
Infection Type ◽  
Dominant Gene ◽  
Leaf Rust Resistance ◽  
Puccinia Recondita ◽  
Wheat Leaf Rust ◽  
Genetics Of Resistance ◽  
Wheat Leaf

Two accessions, V336 and V618, of the A. E. Watkins wheat (Triticum aestivum) collection were studied genetically for their resistance to leaf rust (Puccinia recondita). The two accessions have in common a dominant gene that gives a fleck infection type reaction to all the isolates of leaf rust used. This gene may be a previously unidentified gene and we have tentatively assigned the gene symbol LrW. Both accessions also have gene Lr33 and V336 has LrB.Key words: Triticum aestivum, wheat, leaf rust resistance

THE INHERITANCE OF LEAF RUST RESISTANCE IN WHEAT CULTIVARS KENYON AND BUCK MANANTIAL

1989 ◽  
Vol 69 (4) ◽  
pp. 1113-1117 ◽  
Author(s):  
P. L. DYCK
Keyword(s):  
Triticum Aestivum ◽  
Leaf Rust ◽  
Rust Resistance ◽  
Adult Plant Resistance ◽  
Leaf Rust Resistance ◽  
Puccinia Recondita ◽  
Adult Plant ◽  
Wheat Cultivars ◽  
Genetics Of Resistance ◽  
Donor Parent

The genetics of resistance to leaf rust (Puccinia recondita f. sp. tritici) was studied in the two common wheat (Triticum aestivum) cultivars Kenyon and Buck Manantial. Kenyon was shown to have genes Lr13 and Lr16, the same gene combination that is present in the cultivar Columbus. Buck Manantial, the leaf-rust resistant donor parent of Kenyon, has seedling genes Lr13 (or an allele), Lr16 and Lr17, and two for adult-plant resistance, Lr13 and an unidentified gene.Key words: Leaf rust resistance, Puccinia recondita f. sp. tritici, wheat (hard red spring)

Comparative mapping of the two wheat leaf rust resistance loci Lr1 and Lr10 in rice and barley

Genome ◽  
1998 ◽  
Vol 41 (3) ◽  
pp. 328-336 ◽  
Author(s):  
Francesca Gallego ◽  
Catherine Feuillet ◽  
Monika Messmer ◽  
Anja Penger ◽  
Andreas Graner ◽  
...  
Keyword(s):  
Leaf Rust ◽  
Comparative Mapping ◽  
Rust Resistance ◽  
Leaf Rust Resistance ◽  
Wheat Leaf Rust ◽  
Wheat Leaf

Comparative mapping of the two wheat leaf rust resistance loci Lr1 and Lr10 in rice and barley

Genome ◽  
1998 ◽  
Vol 41 (3) ◽  
pp. 328-336 ◽  
Author(s):  
Francesca Gallego ◽  
Catherine Feuillet ◽  
Monika Messmer ◽  
Anja Penger ◽  
Andreas Graner ◽  
...  
Keyword(s):  
Leaf Rust ◽  
Comparative Mapping ◽  
Rust Resistance ◽  
Repetitive Sequences ◽  
Rice Chromosome ◽  
Leaf Rust Resistance ◽  
Chromosome 1 ◽  
Wheat Leaf Rust ◽  
Wheat Leaf ◽  
Genomic Regions

The wheat genome is large, hexaploid, and contains a high amount of repetitive sequences. In order to isolate agronomically important genes from wheat by map-based cloning, a simpler model of the genome must be used for identifying candidate genes. The objective of this study was to comparatively map the genomic regions of two wheat leaf rust disease resistance loci, Lr1 and Lr10, in the putative model genomes of rice and barley. Two probes cosegregating with the Lr1 gene on chromosome 5DL of wheat were studied. The rice sequences corresponding to the two probes were isolated and mapped. The two probes mapped to two different rice chromosomes, indicating that the organization of the region orthologous to Lr1 is different in rice and wheat. In contrast, synteny was conserved between wheat and barley in this chromosomal region. The Lrk10 gene cosegregated with Lr10 on chromosome 1AS in wheat. The rice gene corresponding to Lrk10 was mapped on rice chromosome 1, where it occurred in many copies. This region on rice chromosome 1 corresponds to the distal part of the group 3S chromosomes in Triticeae. The synteny is conserved between rice chromosome 1 and the Triticeae group 3S chromosomes up to the telomere of the chromosomes. On group 3S chromosomes, we found a gene that is partially homologous to Lrk10. We conclude that in the genomic regions studied, there is limited and only partially useful synteny between wheat and rice. Therefore, barley should also be considered as a model genome for isolating the Lr1 and Lr10 genes from wheat.Key words: barley, comparative mapping, leaf rust, resistance genes, rice, synteny, wheat.

scholarly journals Highly predictive SNP markers for efficient selection of the wheat leaf rust resistance gene Lr16

2017 ◽  
Vol 17 (1) ◽  
Author(s):  
Mulualem T. Kassa ◽  
Frank M. You ◽  
Colin W. Hiebert ◽  
Curtis J. Pozniak ◽  
Pierre R. Fobert ◽  
...  
Keyword(s):  
Leaf Rust ◽  
Resistance Gene ◽  
Rust Resistance ◽  
Leaf Rust Resistance ◽  
Snp Markers ◽  
Leaf Rust Resistance Gene ◽  
Wheat Leaf Rust ◽  
Wheat Leaf ◽  
Efficient Selection ◽  
Selection Of

INHERITANCE OF LEAF RUST RESISTANCE IN WHEAT CULTIVARS RAFAELA AND EAP 26127 AND CHROMOSOME LOCATION.OF GENE Lr17

1977 ◽  
Vol 19 (2) ◽  
pp. 355-358 ◽  
Author(s):  
P. L. Dyck ◽  
E. R. Kerber
Keyword(s):  
Triticum Aestivum ◽  
Leaf Rust ◽  
Rust Resistance ◽  
Leaf Rust Resistance ◽  
Triticum Aestivum L ◽  
Puccinia Recondita ◽  
Wheat Cultivars ◽  
Seedling Resistance

The inheritance of seedling resistance to leaf rust (Puccinia recondita) was studied in wheat (Triticum aestivum L.) cultivars Rafaela and EAP 26127. Rafaela has genes Lr14b and Lr17 while EAP 26127 has Lr17. Lr17 was located on chromosome 2A, possibly the short arm, and was independent of Lr11.

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