Identifying a non-destructive technique to assess nematode tolerance in wheat variety trials
Paper
Paper/Presentation Title | Identifying a non-destructive technique to assess nematode tolerance in wheat variety trials |
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Presentation Type | Paper |
Authors | Whish, Jeremy (Author), Thompson, John (Author), Clewett, Tim (Author) and Lawrence, John (Author) |
Journal or Proceedings Title | Proceedings of the 16th Australian Agronomy Conference (ASA 2012) |
ERA Conference ID | 50281 |
Number of Pages | 7 |
Year | 2012 |
Place of Publication | Australia |
Web Address (URL) of Paper | http://www.regional.org.au/au/asa/2012/pests/8129_whishj.htm#TopOfPage |
Conference/Event | 16th Australian Agronomy Conference: Capturing Opportunities and Overcoming Obstacles in Australian Agronomy (ASA 2012) |
Australian Agronomy Conference | |
Event Details | 16th Australian Agronomy Conference: Capturing Opportunities and Overcoming Obstacles in Australian Agronomy (ASA 2012) Parent Australian Agronomy Conference Delivery In person Event Date 14 to end of 18 Oct 2012 Event Location Armidale, Australia |
Event Details | Australian Agronomy Conference AAC |
Abstract | Wheat cultivars and breeding lines are rigorously tested to identify their level of tolerance to nematodes under field and controlled environment conditions. Unfortunately field-testing can often be compromised by poor seasons or inclement weather resulting in incomplete or lost data. Root-lesion nematodes (Pratylenchus thornei) decrease root function resulting in reduced uptake of water and nitrogen from the soil and in turn results in poor canopy development. This plant damage as a result of the nematode population can be measured by the use of electro magnetic induction (EM38) for soil water estimations and ceptometry for canopy cover analysis. These tools offer the potential to non-destructively compare different wheat plots growing on soils with known high population of nematodes, thus providing an in-season comparison between varieties. This technique was used to assess four wheat varieties that ranged in nematode tolerance from intolerant to tolerant. The EM 38 identified the four varieties as having significantly different water use, ten weeks after sowing. The ceptometer identified the most intolerant varieties before symptoms were easily visible to an observer. The combined use of ceptometry and EM38 found differences between the tolerant and intolerant varieties that normally would require final yield comparison. In the coming years this early screening method will be tested across the cohort of varieties used in the national variety testing program (NVT). This simple non-destructive method of screening varieties will provide additional quantifiable information and reduce the reliance on final yield data. |
ANZSRC Field of Research 2020 | 300409. Crop and pasture protection (incl. pests, diseases and weeds) |
Public Notes | Copyright © 2012 Australian Society of Agronomy. |
Byline Affiliations | Commonwealth Scientific and Industrial Research Organisation (CSIRO), Australia |
Department of Employment, Economic Development and Innovation, Queensland | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q3933/identifying-a-non-destructive-technique-to-assess-nematode-tolerance-in-wheat-variety-trials
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