Query (optional)   in Class  All Allele Author Colleague Collection Assembly Gene Gene Class Gene Product Germplasm Image Journal Keyword Library Locus Map Map Data Marker Pathology Polymorphism Probe Protein QTL Rearrangement Reference Sequence Species Trait Trait Study Two Point Data  

---

GrainGenes Reference Report: TAG-106-353

[Submit comment/correction]

Reference	TAG-106-353
Title	Localisation of genes for resistance against Blumeria graminis f.sp hordei and Puccinia graminis in a cross between a barley cultivar and a wild barley (Hordeum vulgare ssp spontaneum) line
Journal	Theoretical and Applied Genetics
Year	2003
Volume	106
Pages	353-362
Author	Backes G [ Show all 7 ]
Abstract	Summary: The aims of this investigation have been to map new (quantitative) resistance genes against powdery mildew, caused by Blumeria graminis f.sp. hordei L., and leaf rust, caused by Puccinia hordei L., in a cross between the barley (Hordeum vulgare ssp. vulgare) cultivar 'Vada' and the wild barley (Hordeum vulgare ssp. spontaneum) line '1B-87' originating from Israel. The population consisted of 121 recombinant inbred lines. Resistance against leaf rust and powdery mildew was tested on detached leaves. The leaf rust isolate 'I-80' and the powdery mildew isolate 'Va-4', respectively, were used for the infection in this experiment. Moreover, powdery mildew disease severity was observed in the field at two different epidemic stages. In addition to other DNA markers, the map included 13 RGA (resistance gene analog) loci. The structure of the data demanded a non-parametric QTL-analysis. For each of the four observations, two QTLs with very high significance were localised. QTLs for resistance against powdery mildew were detected on chromosome 1H, 2H, 3H, 4H and 7H. QTLs for resistance against leaf rust were localised on 2H and 6H. Only one QTL was common for two of the powdery mildew related traits. Three of the seven QTLs were localised at the positions of the RGA-loci. Three of the five powdery mildew related QTLs are sharing their chromosomal position with known qualitative resistance genes. All detected QTLs behaved additively. Possible sources of the distorted segregation observed, the differences between the results for the different powdery mildew related traits and the relation between qualitative and quantitative resistance are discussed
External Databases	Pubmed: 12582863
Keyword	[ Hide all but 1 of 49 ] analog barley blumeria graminis blumeria graminis f.sp hordei chromosome cultivar detached leaf difference disease disease resistance dna doubled-haploid population f sp hordei field gene graminis hordei hordeum inbred line infection israel leaf rust linkage map locus map mildew population powdery mildew powdery mildew resistance puccinia graminis qtl qtl analysis quantitative quantitative resistance quantitative trait loci recombinant inbred recombinant inbred line resistance resistance gene resistance gene analogs rflp map rga rust segregation segregation distortion source vulgare ssp spontaneum wild wild barley

GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.