Simultaneous selection of wheat plants with resistance to root-lesion nematodes, crown rot and yellow spot
Presentation
Paper/Presentation Title | Simultaneous selection of wheat plants with resistance to root-lesion nematodes, crown rot and yellow spot |
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Presentation Type | Presentation |
Authors | Sheedy, J. G. (Author), Thompson, J. P. (Author) and Reen, R. A. (Author) |
Editors | MacLeod, W. J. |
Journal or Proceedings Title | Proceedings of the Seventh Australasian Soilborne Diseases Symposium |
Number of Pages | 1 |
Year | 2012 |
ISBN | 9780646585840 |
Web Address (URL) of Paper | http://www.appsnet.org/publications/proceedings/7th%20ASDS%20Proceedings.pdf |
Conference/Event | 7th Australasian Soilborne Diseases Symposium |
Event Details | 7th Australasian Soilborne Diseases Symposium Parent Australasian Soilborne Diseases Symposium Event Date 18 to end of 20 Sep 2012 Event Location Freemantle, Australia |
Abstract | Root-lesion nematodes (Pratylenchus thornei [Pt] and P. neglectus [Pn]), crown rot (CR; Fusarium pseudograminearum) and yellow spot (YS; Pyrenophora triticirepentis) are four economically important diseases of wheat that commonly occur in combination and cost northern growers $137 M annually. Therefore, we need to develop germplasm with combinations of disease resistance to minimise yield loss in these situations. To achieve this, the established screening methods for each disease were combined and where necessary modified, to allow testing of up to 4 diseases simultaneously. Initial experiments tested every disease combination on up to 42 fixed cultivars covering resistant to susceptible disease reactions to develop a procedure that could be used to select individuals with resistance to Pt, Pn, CR and YS. This procedure was used to select resistant individuals in an experiment of 21 check cultivars and 132 segregating F3’s exposed to all 4 diseases. The check cultivars in the F3 experiment were significantly correlated with long-term rankings for YS (r = 0.96***), CR (r = -0.61**) Pt (r = 0.84**) and Pn (r = 0.52*) and we were able to select nine F3’s (7%) with resistance to all four diseases. This procedure will likely hasten the development of multiple-disease resistant parents, suitable for introduction into commercial breeding programs. |
ANZSRC Field of Research 2020 | 300804. Horticultural crop protection (incl. pests, diseases and weeds) |
Public Notes | Abstract only published - #79. |
Byline Affiliations | Department of Primary Industries and Fisheries, Queensland |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q392v/simultaneous-selection-of-wheat-plants-with-resistance-to-root-lesion-nematodes-crown-rot-and-yellow-spot
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