Pre-breeding wheat for resistance to root-lesion nematodes
Paper
Paper/Presentation Title | Pre-breeding wheat for resistance to root-lesion nematodes |
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Presentation Type | Paper |
Authors | Thompson, John (Author), Sheedy, Jason (Author), Robinson, Neil (Author), Reen, Ros (Author), Clewett, Tim (Author) and Lin, Jing (Author) |
Journal or Proceedings Title | Proceedings of the 2012 GRDC Grains Research Update, Goondiwindi |
Number of Pages | 5 |
Year | 2012 |
Place of Publication | Canberra, Australia |
Web Address (URL) of Paper | http://www.grdc.com.au/Research-and-Development/GRDC-Update-Papers/2012/04/Prebreeding-wheat-for-resistance-to-rootlesion-nematodes |
Conference/Event | 2012 GRDC Grains Research Update, Goondiwindi |
Event Details | 2012 GRDC Grains Research Update, Goondiwindi Event Date 12 Apr 2012 Event Location Goondiwindi, Australia |
Abstract | Wheat (Triticum aestivum) is a favoured host of the root-lesion nematodes Pratylenchus thornei and P. neglectus. These nematodes invade wheat roots where they feed and reproduce. Their activities cause lesions and decrease the efficiency of roots, resulting in poor uptake of nutrients and water from the soil leading to reduced plant biomass and grain yield. Both nematode species occur in all Australian wheat regions, however, in the northern region P. thornei is more widespread and occurs at higher population densities than P. neglectus. For example, P. thornei was found in 67% and P. neglectus in 32% of 795 fields tested (Thompson et al 2010). P. thornei and P. neglectus were present at population densities exceeding 2000/kg soil (considered a threshold for damage) in respectively 31% and 5% of samples. The loss to the wheat industry from these two nematode species has been estimated at $AU47 million/year for the northern region and $123 million for all Australia, based on average wheat production and price of $AUD239/tonne over a 10-year period to 2008 (Murray and Brennan 2010). Potential losses, if there were no management options with crop rotation and tolerant varieties, were estimated to be $125 million in the northern region and $433 million/year in all of Australia. |
Keywords | root-lesion nemotodes; pathogens; wheat; Pratylenchus thornei; Pratylenchus neglectus |
ANZSRC Field of Research 2020 | 300403. Agronomy |
300409. Crop and pasture protection (incl. pests, diseases and weeds) | |
Public Notes | There are no files associated with this item. |
Byline Affiliations | Department of Agriculture and Fisheries, Queensland |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q2w9z/pre-breeding-wheat-for-resistance-to-root-lesion-nematodes
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