AUTHOR=Fang Yunxia , Zhang Xiaoqin , Xue Dawei 

TITLE=Genetic Analysis and Molecular Breeding Applications of Malting Quality QTLs in Barley

JOURNAL=Frontiers in Genetics

VOLUME=Volume 10 - 2019

YEAR=2019

URL=https://www.frontiersin.org/journals/genetics/articles/10.3389/fgene.2019.00352

DOI=10.3389/fgene.2019.00352

ISSN=1664-8021

ABSTRACT=Malting quality is an important determinant of the value of barley grain used in malting and brewing. With recent sequencing and assembling of the barley genome, an increasing number of quantitative trait loci (QTLs) and genes related to malting quality have been identified or cloned. This provides a good molecular genetic basis for barley quality improvement. In this review we will consider the following indicators of malting quality: malt extract (ME), diastatic power (DP), kolbach index(KI), wort viscosity(VIS), free amino nitrogen(FAN), soluble protein (SP), wort β-glucan (WBG), and protein content(PC), and have listed related QTLs/genes with high phenotypic variation in multiple populations or environments. Meanwhile, the correlations among the quality parameters were analyzed, and parts of significant indicators suitable for improvement were discussed based on nutrient composition and content required for high-quality malt, which would provide reference for molecular marker-assisted selection (MAS) of malting quality in barley.