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Resistance to the root-lesion nematode Pratylenchus thornei in wheat landraces and cultivars from the West Asia and North Africa (WANA) region.

Thompson, J.P. and O'Reilly, M.M. and Clewett, T.G. (2009) Resistance to the root-lesion nematode Pratylenchus thornei in wheat landraces and cultivars from the West Asia and North Africa (WANA) region. Crop & Pasture Science, 60 (12). pp. 1209-1217.

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Article Link(s): http://dx.doi.org/10.1071/cp09159

Publisher URL: http://www.publish.csiro.au

Abstract

Resistance to the root-lesion nematode Pratylenchus thornei was sought in wheat from the West Asia and North Africa (WANA) region in the Watkins Collection (148 bread and 139 durum wheat accessions) and the McIntosh Collection (59 bread and 43 durum wheat accessions). It was considered that landraces from this region, encompassing the centres of origin of wheat and where P. thornei also occurs, could be valuable sources of resistance for use in wheat breeding. Resistance was determined by number of P. thornei/kg soil after the growth of the plants in replicated glasshouse experiments. On average, durum accessions produced significantly lower numbers of P. thornei than bread wheat accessions in both the Watkins and McIntosh Collections. Selected accessions with low P. thornei numbers were re-tested and 13 bread wheat and 10 durum accessions were identified with nematode numbers not significantly different from GS50a, a partially resistant bread wheat line used as a reference standard. These resistant accessions, which originated in Iran, Iraq, Syria, Egypt, Sudan, Morocco, and Tunisia, represent a resource of resistance genes in the primary wheat gene pool, which could be used in Australian wheat breeding programs to reduce the economic loss from P. thornei.

Item Type:Article
Business groups:Agri-Science, Crop and Food Science
Additional Information:© State of Queensland, Department of Employment, Economic Development and Innovation.
Keywords:Triticum aestivum; Triticum turgidum spp. durum; Pratylenchus neglectus; CCN; Heterodera avenae; Cre genes. cultivars; genes; landraces; pest resistance; plant parasitic nematodes; plant pests; wheat; field crops; nematoda; cultivated varieties; invertebrates.
Subjects: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 > Wheat
Science > Biology > Genetics
Deposited On:24 Jun 2010 04:53
Last Modified:26 Oct 2011 04:41

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