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GrainGenes Reference Report: CRS-53-1894

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Reference	CRS-53-1894
Title	Genomic, marker-assisted, and pedigree-BLUP selection methods for β-glucan concentration in elite oat.
Journal	Crop Science
Year	2013
Volume	53
Pages	1894-1906
Author	[ Hide all but 1 of 6 ] Asoro FG Newell MA Beavis WD Scott MP Tinker NA Jannink J-L
Abstract	beta-glucan, a soluble fiber found in oat (Avena sativa L.) grain, is good for human health, and selection for higher levels of this compound is regarded as an important breeding objective. Recent advances in oat DNA markers present an opportunity to investigate new selection methods for polygenic traits such as beta-glucan concentration. Our objectives in this study were to compare genomic, marker-assisted, and best linear unbiased prediction (BLUP)-based phenotypic selection for short-term response to selection and ability to maintain genetic variance for beta-glucan concentration. Starting with a collection of 446 elite oat lines from North America, each method was conducted for two cycles. The average beta-glucan concentration increased from 4.57 g/100 g in Cycle 0 to between 6.66 and 6.88 g/100 g over the two cycles. The averages of marker-based selection methods in Cycle 2 were greater than those of phenotypic selection (P < 0.08). Progenies with the highest beta-glucan came from the marker-based selection methods. Marker-assisted selection (MAS) for higher beta-glucan concentration resulted in a later heading date. We also found that marker-based selection methods maintained greater genetic variance than did BLUP phenotypic selection, potentially enabling greater future selection gains. Overall, the results of these experiments suggest that genomic selection is a superior method for selecting a polygenic complex trait like beta-glucan concentration.
External Databases	https://doi.org/10.2135/cropsci2012.09.0526 https://dl.sciencesocieties.org/publications/cs/abstracts/53/5/1894

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