Chromosomal loci associated with endosperm hardness in a malting barley cross
Article
Article Title | Chromosomal loci associated with endosperm hardness in a malting barley cross |
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ERA Journal ID | 2411 |
Article Category | Article |
Authors | Walker, Cassandra K. (Author), Panozzo, J. F. (Author), Ford, R. (Author), Eckermann, P. (Author), Moody, D. (Author), Lehmensiek, A. (Author) and Appels, R. (Author) |
Journal Title | Theoretical and Applied Genetics: international journal of plant breeding research |
Journal Citation | 122 (1), pp. 151-162 |
Number of Pages | 12 |
Year | 2011 |
Publisher | Springer |
Place of Publication | Berlin / Heidelberg, Germany |
ISSN | 0040-5752 |
1432-2242 | |
Digital Object Identifier (DOI) | https://doi.org/10.1007/s00122-010-1431-5 |
Abstract | A breeding objective for the malting barley industry is to produce lines with softer, plumper grain containing more likely to imbibe water readily and contain more starch per grain, which in turn produces higher levels of malt extract. In a malting barley mapping population, ‘Arapiles’ x ‘Franklin’, the most significant and robust quantitative trait locus (QTL) for endosperm hardness was observed on the short arm of chromosome 1H, across three environments over two growing seasons. This accounted for 22.6% (Horsham 2000), 26.8% (Esperance 2001), and 12.0% (Tarranyurk 2001) of the genetic variance and significantly increased endosperm hardness by 2.06–3.03 SKCS hardness units. Interestingly, Arapiles and Franklin do not vary in Ha locus alleles. Therefore, this region, near the centromere on chromosome 1H, may be of great importance when aiming to manipulate endosperm hardness and malting quality. Interestingly, this region, close to the centromere on chromosome 1H, in our study, aligns with the region of the genome that includes the HvCslF9 and the HvGlb1 genes. Potentially, one or both of these genes could be considered to be candidate genes that influence endosperm hardness in the barley grain. Additional QTLs for endosperm hardness were detected on chromosomes 2H, 3H, 6H and 7H, confirming that the hardness trait in barley is complex and multigenic, similar to many malting quality traits of interest. |
Keywords | breeding objectives; candidate genes; genetic variance; growing season; malt extract; malting quality; mapping populations; protein contents; quantitative trait locus |
ANZSRC Field of Research 2020 | 310603. Fermentation |
300105. Genetically modified field crops and pasture | |
300406. Crop and pasture improvement (incl. selection and breeding) | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Melbourne |
Department of Environment and Primary Industries, Victoria | |
University of Adelaide | |
Department of Primary Industries, Victoria | |
Centre for Systems Biology | |
Murdoch University |
https://research.usq.edu.au/item/q0369/chromosomal-loci-associated-with-endosperm-hardness-in-a-malting-barley-cross
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