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 418614
Title mixed modelassociation scans of multi-environmental trial data reveal major loci controlling yield and yield related traits in Hordeum vulgare in Mediterranean environments
Author(s) Comadran, J.; Russell, J.R.; Booth, A.; Pswarayi, A.; Ceccarelli, S.; Grando, S.; Stanca, A.M.; Pecchioni, N.; Akar, T.; Al-Yassin, A.; Benbelkacem, A.; Ouabbou, H.; Bort, J.; Eeuwijk, F.A. van; Thomas, W.T.; Romagosa, I.
Source Theoretical and Applied Genetics 122 (2011)7. - ISSN 0040-5752 - p. 1363 - 1373.
DOI http://dx.doi.org/10.1007/s00122-011-1537-4
Department(s) Biometris (WU MAT)
PE&RC
Publication type Refereed Article in a scientific journal
Publication year 2011
Keyword(s) linkage disequilibrium - heading date - barley - gene - qtl - population - resistance - diversity - genome
Abstract An association panel consisting of 185 accessions representative of the barley germplasm cultivated in the Mediterranean basin was used to localise quantitative trait loci (QTL) controlling grain yield and yield related traits. The germplasm set was genotyped with 1,536 SNP markers and tested for associations with phenotypic data gathered over 2 years for a total of 24 year × location combinations under a broad range of environmental conditions. Analysis of multi-environmental trial (MET) data by fitting a mixed model with kinship estimates detected from two to seven QTL for the major components of yield including 1000 kernel weight, grains per spike and spikes per m2, as well as heading date, harvest index and plant height. Several of the associations involved SNPs tightly linked to known major genes determining spike morphology in barley (vrs1 and int-c). Similarly, the largest QTL for heading date co-locates with SNPs linked with eam6, a major locus for heading date in barley for autumn sown conditions. Co-localization of several QTL related to yield components traits suggest that major developmental loci may be linked to most of the associations. This study highlights the potential of association genetics to identify genetic variants controlling complex traits.
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