Genetic Variance of Metabolomic Features and Their Relationship With Malting Quality Traits in Spring Barley

Frontiers in Plant Science
Xiangyu GuoJust Jensen

Abstract

Barley is the most common source for malt to be used in brewing beer and other alcoholic beverages. This involves converting the starch of barley into fermentable sugars a process that involves malting, that is germinating of the grains, and mashing, which is an enzymatic process. Numerous metabolic processes are involved in germination, where distinct and time-dependent alterations at the metabolite levels happen. In this study, 2,628 plots of 565 spring malting barley lines from Nordic Seed A/S were investigated. Phenotypic records were available for six malting quality (MQ) traits: filtering speed (FS), wort clearness (WCL), extract yield (EY), wort color (WCO), beta glucan (BG), and wort viscosity (WV). Each line had a set of dense genomic markers. In addition, 24,018 metabolomic features (MFs) were obtained for each sample from nuclear magnetic resonance (NMR) spectra for wort samples produced from each experimental plot. The genetic variation in the MFs was investigated using a univariate model, and the relationship between MFs and the MQ traits was studied using a bivariate model. Results showed that a total of 8,604 MFs had heritability estimates significantly larger than 0 and for all MQ traits, there were genetic corr...Continue Reading

Associated Datasets

Aug 5, 2020·Xiangyu Guo, Xiangyu Guo

References

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Methods Mentioned

BETA
nuclear magnetic resonance
NMR
chip

Software Mentioned

Matlab script
icoshift
DMU

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