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GrainGenes Marker Report: Lr20 (Triticum)

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Gene
Lr20 (Triticum)
Gene Class
Reaction to Puccinia recondita Rob. ex Desm.
Allele
Lr20-null (Triticum)
Locus
Lr20
Reference
ReferenceNeu C et al. (2002) Genetic mapping of the Lr20-Pm1 resistance locus reveals suppressed recombination on chromosome arm 7AL in hexaploid wheat Genome 45:737-744.
ReferenceDyck PL and Johnson R (1988) Resistance to the leaf rust or brown rust pathogen (Puccinia recondita) due to Lr20 and its temperature sensitivity in European spring wheats. Proceedings of the 7th European and Mediterranean Cereal Rusts Conference, Vienna, Austria 91-93.
ReferenceBrowder LE (1972) Designation of two genes for resistance to Puccinia recondita in Triticum aestivum. Crop Science 12:705-706.
QTL Associated with Gene
QLr.locus-7A.3
Chromosome
7A
ReferenceSears ER and Briggle LW (1969) Mapping the gene Pm1 for resistance to Erysiphe graminis f. sp. tritici on chromosome 7A of wheat. Crop Science 9:96-97.
Chromosome Arm
7AL
ReferenceSears ER and Briggle LW (1969) Mapping the gene Pm1 for resistance to Erysiphe graminis f. sp. tritici on chromosome 7A of wheat. Crop Science 9:96-97.
Germplasm
[ Hide all but 1 of 19 ]
Hexaploid stockAxminster
ReferenceSears ER and Briggle LW (1969) Mapping the gene Pm1 for resistance to Erysiphe graminis f. sp. tritici on chromosome 7A of wheat. Crop Science 9:96-97.
Axminster
ReferencePBA-26-203 Plant Breeding Abstracts 26:203.
Axminster
ReferencePugsley AT and Carter MV (1953) Resistance of twelve varieties of Triticum vulgare to Erysiphe graminis tritici. Australian Journal of Biological Sciences 6:335-346.
Birdproof
Bonus
CONVERSE
FESTIVAL
KENORA
Kenya W744
Maris Halberd
ReferenceJohnson R et al. (1984) Brown rust of wheat. Annual Report, Plant Breeding Institute Cambridge 84-85.
NORKA
NORMANDIE
NORMANDIE
ReferencePBA-26-203 Plant Breeding Abstracts 26:203.
SAPPO
ReferenceJohnson R et al. (1984) Brown rust of wheat. Annual Report, Plant Breeding Institute Cambridge 84-85.
SICCO
ReferenceDyck PL and Johnson R (1988) Resistance to the leaf rust or brown rust pathogen (Puccinia recondita) due to Lr20 and its temperature sensitivity in European spring wheats. Proceedings of the 7th European and Mediterranean Cereal Rusts Conference, Vienna, Austria 91-93.
THEW
ReferenceBrowder LE (1972) Designation of two genes for resistance to Puccinia recondita in Triticum aestivum. Crop Science 12:705-706.
THEW
ReferenceWatson IA and Luig NH (1961) Leaf rust in Australia: A systematic scheme for the classification of strains. Proceedings of the Linnaean Society of New South Wales 86:241-250.
TIMMO
ReferenceJohnson R et al. (1984) Brown rust of wheat. Annual Report, Plant Breeding Institute Cambridge 84-85.
Homologous chromosome substitution lineChinese Spring*5/Axminster 7A
ReferenceSears ER (1954) The aneuploids of common wheat. 572.
Comment
Hexaploid stocks: see Pm1 and Sr15, with which Lr20 is always associated. Lr20 in Sicco appears to differ from that in Sappo, Timmo and Maris Halberd (217).
Wheat Gene Catalog Reference
217
ReferenceDyck PL and Johnson R (1988) Resistance to the leaf rust or brown rust pathogen (Puccinia recondita) due to Lr20 and its temperature sensitivity in European spring wheats. Proceedings of the 7th European and Mediterranean Cereal Rusts Conference, Vienna, Austria 91-93.
Info Source
ReferenceMcIntosh RA et al. (1995) Catalogue of gene symbols for wheat. Proceedings of the 8th International Wheat Genetics Symposium 1333-1500.
Data Curator
Hart, Gary E.95.08.24



Locus Associated with Gene
Lr20
Type
Gene
Trait
Chromosome
7A
Chromosome Arm
7AL
Map
Durum Wheat, NSGC Lr 7A200.8
Triticum-Genes-7A63.8
Wheat-Composite2004-7A223
[ Show Nearby Loci ]
Map Data
Durum Wheat, NSGC Lr
Wheat genes
2 Point Data
cn-A1a/Lr20#1
Sr22/Lr20#1
Species
Triticum aestivum
Probe
PSR687
Associated Gene
Lr20 (Triticum)
Gene Class
Reaction to Puccinia recondita Rob. ex Desm.
Reference
ReferenceNeu C et al. (2002) Genetic mapping of the Lr20-Pm1 resistance locus reveals suppressed recombination on chromosome arm 7AL in hexaploid wheat Genome 45:737-744.
ReferenceSears ER and Briggle LW (1969) Mapping the gene Pm1 for resistance to Erysiphe graminis f. sp. tritici on chromosome 7A of wheat. Crop Science 9:96-97.
Remark
Trait marker Xpsr687-7A
Nearby marker on Composite map: Xpsr687b
Position on Composite map estimated by GrainGenes.

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