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GrainGenes Marker Report: Yr2 (Triticum)

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Gene
Yr2 (Triticum)
Synonym
Other nameU
ReferenceZadoks JC (1961) Yellow rust on wheat. Studies on epidemiology and physiological specialization Journal of Pl. Ziekten 67:69-256.
Gene Class
Reaction to Puccinia striiformis Westend.
Reference
ReferenceSingh H and Johnson R (1988) Genetics of resistance to yellow rust in Heines VII, Soissonais and Kalyansona. Proceedings of the 7th International Wheat Genetics Symposium 885-890.
ReferenceLupton FCH and Macer RCF (1962) Inheritance of resistance to yellow rust (Puccinia glumarum Erikss. and Henn.) in seven varieties of wheat. Transactions of the British Mycological Society 45:21-45.
Chromosome
7B
ReferenceLabrum KE (1980) The location of Yr2 and Yr6, genes conferring resistance to yellow rust. Proceedings of the 5th European and Mediterranean Cereal Rusts Conference, Bari, Italy 41-45.
Germplasm
Hexaploid stockAvocet
ReferenceTaylor AJ et al. (1981) Race-specific genetic factors for resistance to Puccinia striiformis in wheat cultivars from the Plant Breeding Institute. Cereal Rusts Bulletin 9:33-45.
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Comment
Yr2 is recessive. Yr2 originally referred to a gene in Heines VII conferring resistance to European pathotypes. However, Heines VII possesses an additional resistance gene (968) which can be detected with a geographically wider range of pathogen isolates. Yr2 is present in Kalyansona (968) and a range of spring wheats distributed by CIMMYT.
Hexaploid stocks: Wizard, Marksman and Galahad are heterogeneous. Avocet is a United Kingdom accession.
Wheat Gene Catalog Reference
968
ReferenceSingh H and Johnson R (1988) Genetics of resistance to yellow rust in Heines VII, Soissonais and Kalyansona. Proceedings of the 7th International Wheat Genetics Symposium 885-890.
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