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GrainGenes Reference Report: PBR-123-17

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Reference	PBR-123-17
Title	Genetic control over grain damage in a spring barley mapping population
Journal	Plant Breeding
Year	2004
Volume	123
Pages	17-23
Author	Rajasekaran P [ Show all 6 ]
Abstract	Summary: A genetic map was constructed using DNA-based markers in a barley mapping population derived from the cross 'Tankard' x 'Livet', that was developed to explore the genetic control over grain damage in spring barley cultivars. Quantitative trait loci (QTL) were located for husk skinning, gape between the lemma and palea and splitting of the fused pericarp/testa/aleurone tissues. The QTL accounted for 70% of the genetic variation in Split and 60% of the genetic variation in Gape and Skinning. The QTL were clustered on chromosomes 1H, 4H, 5H, 6H and 7H. QTL analysis indicates the possibility of transgressive segregation for grain splitting and so the breeding of lines with more extreme splitting. This is of concern to the malting industry as, without extensive phenotypic assessment, such lines could be commercialized, as was the case of Landlord, and put malting barley supplies at risk. These findings are discussed in relation to the genetic control over traits including grain length and width
Keyword	[ Hide all but 1 of 29 ] barley barley cultivars breeding control gape genetic map genetic variation grain damage hordeum spontaneum hordeum vulgare husk locus malting malting barley map mapping milling energy population qtl qtl analysis quantitative trait loci segregation skinned grain so split grain spring barley tissue trait loci transgressive segregation

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