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GrainGenes Reference Report: TAG-122-479

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Reference
TAG-122-479
Title
Mapping genes Lr53and Yr35 on the short arm of chromosome 6B of common wheat with microsatellite markers and studies of their association with Lr36
Journal
Theoretical and Applied Genetics
Year
2011
Volume
122
Pages
479-487
Author
Dadkhodaie NA
Karaoglou H
Wellings CR
Park RF
Abstract
The rust resistance genes Lr53 and Yr35, transferred to common wheat from Triticum dicoccoides, were reported previously to be completely linked on chromosome 6B. Four F3 families were produced from a cross between a line carrying Lr53 and Yr35 (98M71) and the leaf rust and stripe rust susceptible genotype Avocet 'S' and were rust tested using Puccinina triticina pathotype 53-1,(6),(7),10,11 and Puccinia striiformis f. sp. tritici pathotype 110 E143 A+. The homozygous resistant lines produced infection types of ';1−' and ';N' to these pathotypes, respectively. The Chi-squared tests indicated goodness-of-fit of the data for one leaf rust gene and one stripe rust gene segregation. Linkage analysis using this population demonstrated recombination of 3% between the genes. Microsatellite markers located on the short arm of chromosome 6B were used to map the genes, with the markers cfd1 and gwm508 being mapped approximately 1.1 and 4.5 cM, respectively, proximal to Lr53. Additional studies of the relationship between Lr36, also located on the short arm of chromosome 6B, and Lr53 indicated that the two genes were independent.
External Databases
http://doi.org/10.1007/s00122-010-1462-y
Locus
Yr35
QTL
QTL1006_6B-Dadkhodaie_et_al._2011