Weather conditions conducive to infection of winter wheat by Puccinia striiformis sp. tritici race ‘warrior’
Poster
Paper/Presentation Title | Weather conditions conducive to infection of winter wheat by Puccinia striiformis sp. tritici race ‘warrior’ |
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Presentation Type | Poster |
Authors | El Jarroudi, Moussa (Author), Kouadio, Louis (Author), El Jarroudi, Mustapha (Author), Bock, Clive H. (Author), Tychon, Bernard (Author), Junk, Jurgen (Author) and Delfosse, Philippe (Author) |
Journal or Proceedings Title | Phytopathology: International Journal of the American Phytopathological Society |
Journal Citation | 105 (Suppl. 4, No, 11), p. S4.40 |
Article Number | S4.40 |
Number of Pages | 1 |
Year | 2015 |
Publisher | American Phytopathological Society |
Place of Publication | United States |
ISSN | 0031-949X |
1943-7684 | |
Digital Object Identifier (DOI) | https://doi.org/10.1094/PHYTO-105-11-S4.1 |
Conference/Event | 2015 APS Annual Meeting |
Event Details | 2015 APS Annual Meeting Event Date 01 to end of 05 Aug 2015 Event Location Pasadena, United States of America |
Abstract | Wheat stripe rust (WSR) (caused by Puccinia striiformis sp. tritici) continues to be a major threat in most wheat growing regions of the world, with potential to inflict regular yield losses when susceptible cultivars are grown and weather conditions are favourable. A recent isolated strain of P. striiformis sp. tritici, warrior, first identified in 2011 in Europe, is now virulent on adult plants of susceptible wheat cultivars across most of wheat growing regions, including Luxembourg. Daily weather conditions were monitored and related to development of WSR during the 2012-2014 period in Luxembourg. Favourable weather conditions were determined by (i) analysing Dennis model outputs generated through a Monte Carlo method, and (ii) identifying the best correlation between the frequencies of weather condition classes and the area under the disease progress curve on the uppermost three leaves (L1, L2, and L3; L1 being the flag leaf). Our results showed that combined weather conditions, including relative humidity >92% for ≥4 hours and air temperatures between 4°C and 16°C for ≥36 hours are necessary for WLR development, assuming inoculum is available. Furthermore, comparisons with reported WLR outbreaks in previous years showed that in recent years the disease is occurring at earlier stages in the growing season, suggesting a likely effect of climate change and/or climate variability. |
Keywords | weather; wheat stripe rust |
ANZSRC Field of Research 2020 | 300409. Crop and pasture protection (incl. pests, diseases and weeds) |
Public Notes | Abstract only. |
Byline Affiliations | University of Liege, Belgium |
International Centre for Applied Climate Science | |
Abdelmalek Essaâdi University, Morocco | |
Department of Agriculture, United States | |
Luxembourg Institute of Science and Technology, Luxembourg | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q6633/weather-conditions-conducive-to-infection-of-winter-wheat-by-puccinia-striiformis-sp-tritici-race-warrior
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