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GrainGenes Reference Report: JCS-54-255

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Reference
JCS-54-255
Title
Quantitative trait loci for yellow pigment concentration and individual carotenoid compounds in durum wheat
Journal
Journal of Cereal Science
Year
2011
Volume
54
Pages
255-264
Author
Blanco A
[ Show all 10 ]
Abstract
A defining factor for the commercial value of durum wheat pasta is its amber colour, which depends on the semolina yellow pigment concentration and on the oxidative enzymatic activity. Among carotenoids controlling yellow colour, the presence of b-carotene is also important as precursors of vitamin A. The aim of the present study was to detect quantitative trait loci (QTL) for yellow pigment concentration, yellow index and individual carotenoid compounds (lutein, zeaxanthin, b-cryptoxanthin, a-carotene and b-carotene) in a durum segregant population. Total carotenoid concentration amounted to 37% of the yellow pigments, indicating unknown colour-producing compounds in the durum extracts. Lutein was the most abundant carotenoid, followed by zeaxanthin, a-carotene and b-carotene, while b-cryptoxanthin was a minor component. Phytoene synthase marker Psy-A1, 150 SSR and EST-SSR markers, and 345 DArT markers, were used to construct the linkage map for subsequent QTL analysis. Clusters of QTL for total and/or one or more carotenoid compounds were detected on the same chromosome regions (2A, 3B, 5A and 7A) where QTL for yellow pigment concentration and yellow index were identified. The molecular markers associated to major QTL would be useful for marker-assisted selection programs to facilitate high carotenoid concentration with high nutritional carotenoid compounds in wheat grain.
External Databases
http://www.sciencedirect.com/science/article/pii/S0733521011001263
Locus
D_305426
D_381104
Map Data
Wheat AB, Carotenoid QTL, 2017
QTL
QYI.LaxPr-2A
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Trait Study
Semolina yellow traits, Latino x Primadur, Blanco2011