Validation of black point QTL in wheat
Poster
Paper/Presentation Title | Validation of black point QTL in wheat |
---|---|
Presentation Type | Poster |
Authors | Tah, P. R. (Author), Lehmensiek, A. (Author), Williamson, P. M. (Author), Michalowitz, M. (Author), Done, A. (Author) and Daggard, G. E. (Author) |
Editors | Appels, Rudi, Eastwood, Russell, Lagudah, Peter, Mackay, Michael, McIntyre, Lynne and Sharp, Peter J. |
Journal or Proceedings Title | 11th International Wheat Genetics Symposium 2008 Proceedings (IWGS 2008) |
Number of Pages | 3 |
Year | 2008 |
Place of Publication | Sydney, Australia |
ISBN | 9781920899110 |
Web Address (URL) of Paper | http://ses.library.usyd.edu.au/bitstream/2123/3446/1/P068.pdf |
Conference/Event | 11th International Wheat Genetics Symposium 2008 (IWGS 2008) |
Event Details | 11th International Wheat Genetics Symposium 2008 (IWGS 2008) Parent International Wheat Genetics Symposium Event Date 24 to end of 29 Aug 2008 Event Location Brisbane, Australia |
Abstract | Black Point (BP) is a dark discolouration of the embryo end of wheat and barley grains. It can result in reduced grain quality and value and is a significant problem in most Australian wheat growing areas. Estimated losses through downgrading have been as high as $50 million annually. Quantitative trait loci (QTL) for BP resistance have previously been identified in Sunco and Cascades. The aim of this study was to use a full diallele to validate these QTL and also to determine if two other varieties with increased resistance mirror existing sources of resistance or are potentially novel sources of resistance for BP. The BP resistant lines Lang, Cascades, SW95-50213, and Genaro, and one BP susceptible line, Cunningham were used as parental lines in the full diallele. As both Lang and Sunco are Cook derivatives, Lang was used to validate the Sunco QTL. Marker regression analysis confirmed the QTL on chromosome 2BS in Lang crosses. Genaro and SW95-50213, which are more resistant to BP than Sunco or Cascades, indicated an association between BP resistance and chromosomes 2B and 2A, respectively. The identification of markers for BP resistance in a number of different resistant sources will facilitate the pyramiding of genes for BP resistance in wheat. |
Keywords | wheat; barley; black spot; disease resistance |
ANZSRC Field of Research 2020 | 310806. Plant physiology |
300406. Crop and pasture improvement (incl. selection and breeding) | |
300409. Crop and pasture protection (incl. pests, diseases and weeds) | |
Public Notes | Poster P068. Copyright Sydney University Press. Category E2, poster. |
Byline Affiliations | Centre for Systems Biology |
Department of Primary Industries and Fisheries, Queensland | |
Grains Research and Development Corporation, Australia | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q0xvq/validation-of-black-point-qtl-in-wheat
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