Identification of genetic regions associated with black point in barley

Tah, Priya R. and Lehmensiek, A. and Fox, Glen P. and Mace, Emma and Sulman, Maria and Bloustein, Gary and Daggard, Grant E. (2010) Identification of genetic regions associated with black point in barley. Field Crops Research, 115 (1). pp. 61-66. ISSN 0378-4290

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Abstract

Black point (BP) can cause severe losses to the barley industry through downgrading and discounting of malting barley. The genetic improvement in BP resistance of barley is complex, requiring reliable screening tools, an understanding of genotype by environment interactions and an understanding of the biochemical mechanisms of melanisation involved in BP development. Thus the application of molecular markers for resistance to BP may be a useful tool for plant breeders. We have investigated the genetic regions associated with BP resistance in the barley F2 population, Valier/Binalong. Quantitative trait loci (QTLs) contributed by the resistant parent Valier, were detected on chromosomes 2HS, 2HC, 3HL, 4HL and a QTL contributed by the susceptible parent, Binalong was detected on 5HL. Three of the four QTLs were detected in two distinctly different environments. The differences observed in BP resistance between these two environments and the implications for accelerated screening are discussed. Identified SSR markers in these regions may be useful for selecting black point resistance in related breeding materials.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Author's version deposited in accordance with the copyright policy of the publisher.
Depositing User: Dr Anke Lehmensiek
Faculty / Department / School: Historic - Faculty of Sciences - Department of Biological and Physical Sciences
Date Deposited: 10 Apr 2010 02:57
Last Modified: 02 Jul 2013 23:45
Uncontrolled Keywords: black point; F2; quantitative trait loci; DArT; barley; malting barley
Fields of Research (FOR2008): 06 Biological Sciences > 0604 Genetics > 060499 Genetics not elsewhere classified
06 Biological Sciences > 0607 Plant Biology > 060702 Plant Cell and Molecular Biology
07 Agricultural and Veterinary Sciences > 0703 Crop and Pasture Production > 070399 Crop and Pasture Production not elsewhere classified
Socio-Economic Objective (SEO2008): B Economic Development > 82 Plant Production and Plant Primary Products > 8205 Winter Grains and Oilseeds > 820501 Barley
Identification Number or DOI: doi: 10.1016/j.fcr.2009.10.003
URI: http://eprints.usq.edu.au/id/eprint/7348

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