Timmermans, B.G.H and Osman, A.M. (2007) Differences between spring wheat cultivars for emergence and early development after seed infection with Fusarium culmorum. Paper at: 3rd QLIF Congress: Improving Sustainability in Organic and Low Input Food Production Systems, University of Hohenheim, Germany, March 20-23, 2007.
Infection of wheat seeds with Fusarium spp. causes seedling blight. As a result of this disease, fields sown with infected seeds show a reduced plant density. This is especially a problem in organic agriculture, for which currently no practical seed disinfection methods are available. In the present project we investigated whether spring wheat cultivars differ in sensitivity to seedling blight, whether the possible differences could be linked to cultivar differences in early growth rates, and what size the delay in canopy closure resulting from the plant reductions was. Six spring wheat cultivars (Melon, Lavett, SW Kungsjet, Epos, Pasteur, Thasos), containing three infection levels (averages 5, 15 and 27%) of Fusarium culmorum were obtained and were sown in a field experiment in 2006 in 4 repetitions. Measurements included percentage of emergence, light interception and above ground dry matter to calculate relative growth rates. Infection of seeds with F. culmorum resulted in lower plant densities and a delay in time to 10% light interception of up to 5 days. First preliminary results also show that cultivars differ for sensitivity to seedling blight, and that cultivars with higher early growth rates appeared to be less sensitive to seedling blight, with the exception of cultivar Thasos. If future experiments confirm this relation, it could be used to select cultivars which are more resistant to seedling blight.
|EPrint Type:||Conference paper, poster, etc.|
|Type of presentation:||Paper|
|Keywords:||Spring wheat, Fusarium seedling blight, organic breeding, development of organic agriculture|
|Subjects:|| Crop husbandry > Crop health, quality, protection|
Crop husbandry > Breeding, genetics and propagation
|Research affiliation:|| European Union > QualityLowInputFood > Subproject 3: Crop production systems|
International Conferences > 2007: 3rd QLIF Congress > 3 Crop production / soil management
|Deposited By:||Timmermans, Dr Bart Gerardus Hubertus|
|Deposited On:||09 Mar 2007|
|Last Modified:||12 Apr 2010 07:34|
|Additional Publishing Information:||The final version of this paper is published in: |
Niggli, Urs; Leifert, Carlo; Alföldi, Thomas; Lück, Lorna and Willer, Helga, Eds. (2007) Improving Sustainability in Organic and Low Input Food Production Systems. Proceedings of the 3rd International Congress of the European Integrated Project Quality Low Input Food (QLIF). University of Hohenheim, Germany, March 20 – 23, 2007. Research Institute of Organic Agriculture FiBL, CH-Frick.http://orgprints.org/10417/
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