Association mapping of malting quality traits in UK spring and winter barley cultivar collections

Mark E. Looseley, Luke Ramsay (Lead / Corresponding author), Hazel Bull, J. Stuart Swanston, Paul D. Shaw, Malcolm Macaulay, Allan Booth, Joanne R. Russell, Robbie Waugh, , William T. B. Thomas (Lead / Corresponding author)

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Abstract

In Europe, the most economically significant use of barley is the production of malt for use in the brewing and distilling industries. As such, selection for traits related to malting quality is of great commercial interest. In order to study the genetic basis of variation for malting quality traits in UK cultivars, a historical set of trial data was collated from national and recommended list trials from the period 1988 to 2016. This data was used to estimate variety means for 20 quality related traits in 451 spring barley cultivars, and 407 winter cultivars. Genotypes for these cultivars were generated using iSelect 9k and 50k genotyping platforms, and a genome wide association scan performed to identify malting quality quantitative trait loci (QTL). 24 QTL were identified in spring barley cultivars, and 2 from the winter set. A number of these correspond to known malting quality related genes but the remainder represents novel genetic variation that is accessible to breeders for the genetic improvement of new cultivars.

Original languageEnglish
Number of pages16
JournalTheoretical and Applied Genetics
Early online date6 Jun 2020
DOIs
Publication statusE-pub ahead of print - 6 Jun 2020

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    Looseley, M. E., Ramsay, L., Bull, H., Swanston, J. S., Shaw, P. D., Macaulay, M., Booth, A., Russell, J. R., Waugh, R., & Thomas, W. T. B. (2020). Association mapping of malting quality traits in UK spring and winter barley cultivar collections. Theoretical and Applied Genetics. https://doi.org/10.1007/s00122-020-03618-9