Predicting Hybrid Performances for Quality Traits through Genomic-Assisted Approaches in Central European Wheat
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Type
ArticleAuthors
Liu, GuozhengZhao, Yusheng
Gowda, Manje
Longin, C. Friedrich H.
Reif, Jochen C.
Mette, Michael F.
KAUST Department
Biological and Environmental Science and Engineering (BESE) DivisionCenter for Desert Agriculture
Date
2016-07-06Permanent link to this record
http://hdl.handle.net/10754/617507
Metadata
Show full item recordAbstract
Bread-making quality traits are central targets for wheat breeding. The objectives of our study were to (1) examine the presence of major effect QTLs for quality traits in a Central European elite wheat population, (2) explore the optimal strategy for predicting the hybrid performance for wheat quality traits, and (3) investigate the effects of marker density and the composition and size of the training population on the accuracy of prediction of hybrid performance. In total 135 inbred lines of Central European bread wheat (Triticum aestivum L.) and 1,604 hybrids derived from them were evaluated for seven quality traits in up to six environments. The 135 parental lines were genotyped using a 90k single-nucleotide polymorphism array. Genome-wide association mapping initially suggested presence of several quantitative trait loci (QTLs), but cross-validation rather indicated the absence of major effect QTLs for all quality traits except of 1000-kernel weight. Genomic selection substantially outperformed marker-assisted selection in predicting hybrid performance. A resampling study revealed that increasing the effective population size in the estimation set of hybrids is relevant to boost the accuracy of prediction for an unrelated test population.Citation
Predicting Hybrid Performances for Quality Traits through Genomic-Assisted Approaches in Central European Wheat 2016, 11 (7):e0158635 PLOS ONESponsors
The wheat data set for this research was generated within the HYWHEAT project funded by Bundesministerium für Bildung und Forschung (Grant ID: FKZ0315945D). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.Publisher
Public Library of Science (PLoS)Journal
PLoS ONEAdditional Links
http://dx.plos.org/10.1371/journal.pone.0158635ae974a485f413a2113503eed53cd6c53
10.1371/journal.pone.0158635