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GrainGenes Reference Report: TPG-5-164

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Reference
TPG-5-164
Title
Quantitative trait loci affecting oil content, oil composition, and other agronomically important traits in oat.
Journal
The Plant Genome
Year
2012
Volume
5
Pages
164-175
Author
[ Hide all but 1 of 11 ]
Hizbai BT
Gardner KM
Wight CP
Dhanda RK
Molnar SJ
Johnson D
Fregeau-Reid J
Yan W
Rossnagel BG
Holland JB
Tinker NA
Abstract
Groat oil content and composition are important determinants of oat (Avena sativa L.) quality. We investigated these traits in a population of 146 recombinant inbred lines from a cross between 'Dal' (high oil) and 'Exeter' (low oil). A linkage map consisting of 475 Diversity Arrays Technology (DArT) markers spanning 1271.8 cM across 40 linkage groups was constructed. Quantitative trait locus (QTL) analysis for groat oil content and composition was conducted using grain samples grown at Aberdeen, ID, in 1997. Quantitative trait locus analysis for multiple agronomic traits was also conducted using data collected from hill plots and field plots in Ottawa, ON, in 2010. Using simple and composite interval mapping methods, QTLs for oil content, palmitic acid (16:0), stearic acid (18:0), oleic acid (18:1), linoleic acid (18:2), and linolenic acid (18:3) were identified. Two of the loci associated with oil content were associated with all of the fatty acids examined in this study, and most oil-related QTL showed similar patterns of effect on the fatty acid profile. These results suggest the presence of pleiotropic effects on oil-related traits through influences at specific nodes of the oil synthesis pathway. In addition, 12 QTL-associated markers (likely representing nine unique regions) were associated with plant height, heading date, lodging, and protein content.
External Databases
https://doi.org/10.3835/plantgenome2012.07.0015
https://dl.sciencesocieties.org/publications/tpg/abstracts/5/3/164
Map Data
Oat-2012-Dal_x_Exeter
QTL
QOil.DxE-1
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