Crown rot of winter cereals: integrating molecular studies and germplasm improvement

Sutherland, M. W. and Bovill, W. D. and Eberhard, F. S. and Lehmensiek, A. and Herde, D. and Simpfendorfer, S. (2009) Crown rot of winter cereals: integrating molecular studies and germplasm improvement. In: APPS 2009: Plant Health Management: An Integrated Approach, 29 Sep-1 Oct 2009, Newcastle, Australia.

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Abstract

Crown rot of winter cereals is a major constraint on grain production across most growing regions in Australia, particularly where stubble retention is practiced to maintain soil structure and retain soil water. The predominant cause of this disease is infection with Fusarium pseudograminearum (Fpg), although in some southern areas Fusarium culmorum infections are also significant. These Fusarium species are able to grow saprophytically on stubble remnants over the summer and provide inoculum for crop infection in the following season. Losses due to crown rot are highest in seasons featuring a dry finish in which maturing plants experience water stress, with symptoms including basal stem browning and white heads bearing no grain. Control of this disease is challenging and is currently based on management practices centred on crop rotation strategies. At present, there are no resistant commercial varieties of bread wheat, durum or barley available for deployment. Durum wheats are particularly susceptible. Here we report on recent successes in pyramiding sources of partial resistance and discuss progress in transferring resistance from hexaploid sources into a durum background.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Lecture)
Refereed: Yes
Item Status: Live Archive
Depositing User: ePrints Administrator
Faculty / Department / School: Historic - Faculty of Sciences - Department of Biological and Physical Sciences
Date Deposited: 22 Dec 2009 15:59
Last Modified: 26 Sep 2013 01:23
Uncontrolled Keywords: crown rot; wheat; Fusarium pseudograminearum
Fields of Research (FOR2008): 10 Technology > 1001 Agricultural Biotechnology > 100199 Agricultural Biotechnology not elsewhere classified
07 Agricultural and Veterinary Sciences > 0703 Crop and Pasture Production > 070302 Agronomy
07 Agricultural and Veterinary Sciences > 0703 Crop and Pasture Production > 070308 Crop and Pasture Protection (Pests, Diseases and Weeds)
Socio-Economic Objective (SEO2008): B Economic Development > 82 Plant Production and Plant Primary Products > 8205 Winter Grains and Oilseeds > 820507 Wheat
URI: http://eprints.usq.edu.au/id/eprint/13205

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