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Identification of genetic regions associated with black point in barley.

Tah, P.R. and Lehmensiek, A. and Fox, G.P. and Mace, E. and Sulman, M. and Bloustein, G. and Daggad, G.E. (2009) Identification of genetic regions associated with black point in barley. Field Crops Research, 115 (1). pp. 61-66.

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Article Link(s): http://dx.doi.org/10.1016/j.fcr.2009.10.003

Publisher URL: http://www.elsevier.com

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.

Item Type:Article
Corporate Creators:Department of Employment, Economic Development and Innovation (DEEDI), Agri-Science, Crop and Food Science , QPIF
Business groups:Agri-Science, Crop and Food Science
Additional Information:© Elsevier B.V.
Keywords:Black point; F2; quantitative trait loci; DArT; barley, malting; genetics.
Subjects:Science > Biology > Genetics > Quantitative genetics (esp. Quantitative Trait Loci (QTL) articles)
Plant pests and diseases > Pest control and treatment of diseases. Plant protection > Organic plant protection. Biological control
Plant pests and diseases > Individual or types of plants or trees > Barley
Deposited On:09 Apr 2010 03:17
Last Modified:26 Oct 2011 04:21

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