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: PHY-92-710

[Submit comment/correction]

Reference	PHY-92-710
Title	Resistance to scald (Rhynchosporium secalis) in barley (Hordeum vulgare) studied by near-isogenic lines: I. Markers and differential isolates
Journal	Phytopathology
Year	2002
Volume	92
Pages	710-720
Author	Bjornstad A [ Show all 8 ]
Abstract	Summary: Near-isogenic lines (NILs) with resistance for scald in seventh generation backcross with 'Ingrid' as recurrent parent (RP) were tested with seven differential isolates of Rhynchosporium secalis in Norway and Canada. NILs of 'Turk', 'Brier', 'CI 8162', 'La Mesita', 'Hispont', 'Atlas 46', 'Modoc', 'Hudson', 'Abyssinian', 'Steudelli', and 'CI 2222' also were evaluated for field reactions. The genetic characterization of the NILs (degree of isogeneity with Ingrid) and with each other was carried out. The molecular marker pattern shows that the backcrossing program has resulted in from 86.3 to 100% RP genome in the NILs, depending on the marker system. On an average, 96% RP genome was found in the NILs. There were certain consistent (pairwise) differences between the NILs and RP on chromosomes 3H and 7H. Both chromosomes are known to contain loci conferring resistance to R. secalis, indicating successful introgression from the donors into the NILs. Approximately two-thirds of the observed RP-NIL polymorphisms were linked to the assumed resistance in the NIL. Based on the marker and phenotypic analyses of the NILs, suggestions for a more appropriate and updated terminology of genes for resistance to R. secalis in barley are made. The proposed changes in nomenclature also indicate the differentials that are available as NILs and those lacking
Keyword	[ Hide all but 1 of 36 ] backcrossing barley canada conferring resistance cultivar differential varieties donor field gene generation genes for resistance genetic characterization genome hordeum integration introgression lacking linkage map microsatellite marker molecular marker near-isogenic line nils nomenclature norway pattern pca population program recurrent resistance resistance gene rflp marker rhynchosporium rhynchosporium secalis scald system

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