Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 407508
Title Testing water-soluble carbohydrate QTL effects in perennial ryegrass (Lolium perenne L.) by marker selection
Author(s) Turner, L.B.; Farrell, M.; Humphreys, M.O.; Dolstra, O.
Source Theoretical and Applied Genetics 121 (2010)8. - ISSN 0040-5752 - p. 1405 - 1417.
Department(s) WUR Plant Breeding
Publication type Refereed Article in a scientific journal
Publication year 2010
Keyword(s) quantitative trait loci - assisted selection - molecular markers - blight resistance - protein-content - spring wheat - rice - plants - populations - adaptation
Abstract Water-soluble carbohydrates (WSC) are an important factor determining the nutritional value of grass forage and development of genetic markers for selection of WSC traits in perennial ryegrass would benefit future breeding programmes. Quantitative trait loci (QTLs) for WSC have been published for an F-2 ryegrass mapping family. Markers showing significant associations with these QTLs were used to design narrow-based populations with homozygosity for target QTLs. Founders were selected from within the mapping family. The divergent populations produced were analysed for WSC content in the glasshouse and the field. There was evidence of complex interactions between WSC content and other factors and traits, including the scale of assessment, time/degree of sward establishment and other forage quality parameters. Differences between the divergent pairs of the various populations were small. However, differences observed between the founder selection groups were maintained and the roles of the QTL regions in regulating forage WSC content were confirmed. In general, the individual divergent populations exploited only a limited extent of the large phenotypic variation available within the mapping family. However, this study sets the scene for exploring the opportunities for marker-assisted breeding strategies for complex traits in obligate out-breeding species, and the challenges of doing this are discussed.
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