Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/13584
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Type: Journal article
Title: The Yd2 gene for barley yellow dwarf virus resistance maps close to the centromere on the long arm of barley chromosome 3
Author: Collins, N.
Paltridge, N.
Ford, C.
Symons, R.
Citation: Theoretical and Applied Genetics, 1996; 92(7):858-864
Publisher: Springer-Verlag
Issue Date: 1996
ISSN: 0040-5752
1432-2242
Statement of
Responsibility: 
N. C. Collins, N. G. Paltridge, C. M. Ford, R. H. Symons
Abstract: Barley yellow dwarf luteovirus (BYDV) causes serious yield losses in all cereals worldwide. The Yd2 gene from a number of Ethiopian barleys (Hordeum vulgare L.) has been the most effective means of providing resistance against BYDV in cultivated barley. Isolation of the Yd2 gene will enable characterisation of the molecular basis of the Yd2-BYDV interaction. This paper describes the first stage in a project to isolate the gene: the construction of a detailed linkage map of the Yd2 region. The map encompasses 27.6 centiMorgans (cM) of chromosome 3 and contains 19 RFLPs, 2 morphological marker loci, the centromere and Yd2. In the mapping population of 106 F2 individuals, Yd2 perfectly cosegregated with the RFLP loci Xwg889 and XYlp, which were located on the long arm, 0.5 cM from the centromere. The two morphological marker loci, uzu dwarfand white stripe j, both mapped distal to Yd2. The protein product of the gene at the XYlp locus will provide a convenient assay for the selection of Yd2 during the breeding of BYDV-resistant barley varieties.
Keywords: Restriction fragment length polymorphism; barley yellow dwarf; resistance; Yd2; morphological marker
Description: Accepted: 13 October 1995
Rights: © Springer-Verlag 1996
RMID: 0030003667
DOI: 10.1007/BF00221898
Appears in Collections:Agriculture, Food and Wine publications

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