Optimising initial population density, growth time and nitrogen nutrition for assessing resistance of wheat cutivars to root-lesion nematode (Pratylenchus thornei)

Article

Thompson, J. P., Clewett, T. G. and O'Reilly, M. M.. 2015. "Optimising initial population density, growth time and nitrogen nutrition for assessing resistance of wheat cutivars to root-lesion nematode (Pratylenchus thornei)." Australasian Plant Pathology. 44 (2), pp. 133-147. https://doi.org/10.1007/s13313-015-0347-6
Article Title

Optimising initial population density, growth time and nitrogen nutrition for assessing resistance of wheat cutivars to root-lesion nematode (Pratylenchus thornei)

ERA Journal ID2559
Article CategoryArticle
AuthorsThompson, J. P. (Author), Clewett, T. G. (Author) and O'Reilly, M. M. (Author)
Journal TitleAustralasian Plant Pathology
Journal Citation44 (2), pp. 133-147
Number of Pages15
Year2015
PublisherSpringer
Place of PublicationDordrecht, Netherlands
ISSN0815-3191
1448-6032
Digital Object Identifier (DOI)https://doi.org/10.1007/s13313-015-0347-6
Web Address (URL)http://link.springer.com/article/10.1007%2Fs13313-015-0347-6
Abstract

Pratylenchus thornei is a major pathogen of wheat in Australia. Two glasshouse experiments with four wheat cultivars that had different final populations (Pf) of P. thornei in the field were used to optimise conditions for assessing resistance. With different initial populations (Pi) ranging up to 5250 P. thornei/kg soil, Pf of P. thornei increased to 16 weeks after sowing, and then decreased at 20 weeks in some cultivar x Pi combinations. The population dynamics of P. thornei up to 16 weeks were best described by a modified exponential equation Pf(t) = aP ie kt where Pf(t) is the final population density at time t, Pi is the initial population density, a is the proportion of Pi that initiates population development, and k is the intrinsic rate of increase of the population. The cultivar GS50a had very low k values at Pi of 5250 and 1050 indicating its resistance, Suneca and Potam had high k values indicating susceptibility, whereas intolerant Gatcher had a low value at the higher Pi and a high value at the lower Pi. Nitrate fertiliser increased plant growth and Pf values of susceptible cultivars, but in unplanted soil it decreased Pf. Nematicide (aldicarb 5 mg/kg soil) killed P. thornei more effectively in planted than in unplanted soil and increased plant growth particularly in the presence of N fertiliser. In both experiments, the wheat cultivars Suneca and Potam were more susceptible than the cultivar GS50a reflecting field results. The method chosen to discriminate wheat cultivars was to assess Pf after growth for 16 weeks in soil with Pi~1050–5250 P. thornei/kg soil and fertilised with 200 mg NO3–N/kg soil.

Keywordsnematode population density, growing time, nitrogen nutrition, vertosols, modified exponential growth curve
ANZSRC Field of Research 2020310407. Host-parasite interactions
300409. Crop and pasture protection (incl. pests, diseases and weeds)
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Byline AffiliationsCentre for Crop Health
Department of Agriculture, Fisheries and Forestry, Queensland
Institution of OriginUniversity of Southern Queensland
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Thompson, J. P., Clewett, T. G., Reen, R. A., Sheedy, J. G. and O'Reilly, M. M.. 2008. "Survey for root-lesion and stunt nematodes in the northern Australian grain region." Hodda, Mike (ed.) 5th International Congress of Nematology (5ICN 2008): Nematodes Down Under. Brisbane, Australia 13 - 18 Jul 2008 Canberra, Australia.
Crop rotation to replace nematicide treatments for assessing chickpea varietal tolerance to Pratylenchus thornei
Reen, R. A., Clewett, T. G. and Thompson, J. P.. 2008. "Crop rotation to replace nematicide treatments for assessing chickpea varietal tolerance to Pratylenchus thornei." Hodda, Mike (ed.) 5th International Congress of Nematology (5ICN 2008): Nematodes Down Under. Brisbane, Australia 13 - 18 Jul 2008 Canberra, Australia.
Evaluating wheat for tolerance and resistance to root-lesion nematodes
Thompson, J. P., Clewett, T. G., Sheedy, J. G. and Seymour, N. P.. 2008. "Evaluating wheat for tolerance and resistance to root-lesion nematodes." Hodda, Mike (ed.) 5th International Congress of Nematology (5ICN 2008): Nematodes Down Under. Brisbane, Australia 13 - 18 Jul 2008 Canberra, Australia.
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., 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 and Pasture Science. 60 (12), pp. 1209-1217. https://doi.org/10.1071/CP09159
Root-lesion nematodes (Pratylenchus thornei and P. neglectus): a review of recent progress in managing a significant pest of grain crops in northern Australia
Thompson, J. P., Owen, K. J., Stirling, G. R. and Bell, M. J.. 2008. "Root-lesion nematodes (Pratylenchus thornei and P. neglectus): a review of recent progress in managing a significant pest of grain crops in northern Australia." Australasian Plant Pathology. 37 (3), pp. 235-242. https://doi.org/10.1071/AP08021
Inheritance of resistance to root-lesion nematode (Pratylenchus thornei) in wheat landraces and cultivars from the West Asia and North Africa (WANA) region
Thompson, J. P. and Seymour, N. P.. 2011. "Inheritance of resistance to root-lesion nematode (Pratylenchus thornei) in wheat landraces and cultivars from the West Asia and North Africa (WANA) region." Crop and Pasture Science. 62 (1), pp. 82-93. https://doi.org/10.1071/CP10309
Stunted cotton (Gossypium hirsutum L.) fully recovers biomass and yield of seed cotton after delayed root inoculation with spores of an arbuscular mycorrhizal fungus (Glomus mosseae)
Thompson, J. P., Seymour, N. P. and Clewett, T. G.. 2012. "Stunted cotton (Gossypium hirsutum L.) fully recovers biomass and yield of seed cotton after delayed root inoculation with spores of an arbuscular mycorrhizal fungus (Glomus mosseae)." Australasian Plant Pathology. 41 (4), pp. 431-437. https://doi.org/10.1007/s13313-012-0137-3
Root-lesion nematode (Pratylenchus thornei) reduces nutrient response, biomass and yield of wheat in sorghum-fallow-wheat cropping systems in a subtropical environment
Thompson, J. P., Mackenzie, J. and Sheedy, G. H.. 2012. "Root-lesion nematode (Pratylenchus thornei) reduces nutrient response, biomass and yield of wheat in sorghum-fallow-wheat cropping systems in a subtropical environment." Field Crops Research. 137, pp. 126-140. https://doi.org/10.1016/j.fcr.2012.08.011
Pratylenchus thornei populations reduce water uptake in intolerant wheat cultivars
Whish, J. P. M., Thompson, J. P., Clewett, T. G., Lawrence, J. L. and Wood, J.. 2014. "Pratylenchus thornei populations reduce water uptake in intolerant wheat cultivars." Field Crops Research. 161, pp. 1-10. https://doi.org/10.1016/j.fcr.2014.02.002
Pre-cropping with canola decreased Pratylenchus thornei populations, arbuscular mycorrhizal fungi, and yield of wheat
Owen, K. J., Clewett, T. G. and Thompson, J. P.. 2010. "Pre-cropping with canola decreased Pratylenchus thornei populations, arbuscular mycorrhizal fungi, and yield of wheat." Crop and Pasture Science. 61 (5), pp. 399-410. https://doi.org/10.1071/CP09345
Detection of Polymyxa graminis in a barley crop in Australia
Thompson, J. P., Clewett, T. G., Jennings, R. E., Sheedy, J. G., Owen, K. J. and Persley, D. M.. 2011. "Detection of Polymyxa graminis in a barley crop in Australia." Australasian Plant Pathology. 40 (1), pp. 66-75. https://doi.org/10.1007/s13313-010-0015-9
Hybridisation of Australian chickpea cultivars with wild Cicer spp. increases resistance to root-lesion nematodes (Pratylenchus thornei and P. neglectus)
Thompson, John P., Reen, Roslyn A., Clewett, Timothy G., Sheedy, Jason G., Kelly, Alison M., Gogel, Beverley J. and Knights, Edward J.. 2011. "Hybridisation of Australian chickpea cultivars with wild Cicer spp. increases resistance to root-lesion nematodes (Pratylenchus thornei and P. neglectus)." Australasian Plant Pathology. 40 (6), pp. 601-611. https://doi.org/10.1007/s13313-011-0089-z
First record of stubby-root nematode (Paratrichodorus porosus) associated with barley in Australia
Sheedy, J. G., Clewett, T. G., Hodda, M. and Thompson, J. P.. 2010. "First record of stubby-root nematode (Paratrichodorus porosus) associated with barley in Australia." Australasian Plant Disease Notes. 5 (1), pp. 66-69. https://doi.org/10.1071/DN10024
Occurrence of root-lesion nematodes (Pratylenchus thornei and P. neglectus) and stunt nematode (Merlinius brevidens) in the northern grain region of Australia
Thompson, J. P., Clewett, T. G., Sheedy, J. G., Reen, R. A., O'Reilly, M. M. and Bell, K. L.. 2010. "Occurrence of root-lesion nematodes (Pratylenchus thornei and P. neglectus) and stunt nematode (Merlinius brevidens) in the northern grain region of Australia." Australasian Plant Pathology. 39 (3), pp. 254-264. https://doi.org/10.1071/AP09094
Resistance to the root-lesion nematode Pratylenchus thornei of Iranian landrace wheat
Sheedy, J. G. and Thompson, J. P.. 2009. "Resistance to the root-lesion nematode Pratylenchus thornei of Iranian landrace wheat." Australasian Plant Pathology. 38 (5), pp. 478-489. https://doi.org/10.1071/AP09030
Diploid and tetraploid progenitors of wheat are valuable sources of resistance to the root lesion nematode Pratylenchus thornei
Sheedy, J. G., Thompson, J. P. and Kelly, A.. 2012. "Diploid and tetraploid progenitors of wheat are valuable sources of resistance to the root lesion nematode Pratylenchus thornei." Euphytica: international journal on plant breeding. 186 (2), pp. 377-391. https://doi.org/10.1007/s10681-011-0617-5
Mapping quantitative trait loci for resistance to Pratylenchus thornei from synthetic hexaploid wheat in the International Triticeae Mapping Initiative (ITMI) population
Zwart, R. S., Thompson, J. P., Sheedy, J. G. and Nelson, J.. 2006. "Mapping quantitative trait loci for resistance to Pratylenchus thornei from synthetic hexaploid wheat in the International Triticeae Mapping Initiative (ITMI) population." Australian Journal of Agricultural Research. 57 (5), pp. 525-530. https://doi.org/10.1071/AR05177
Identification of quantitative trait loci for resistance to two species of root-lesion nematode (Pratylenchus thornei and P. neglectus) in wheat
Zwart, R. S., Thompson, J. P. and Godwin, I. D.. 2005. "Identification of quantitative trait loci for resistance to two species of root-lesion nematode (Pratylenchus thornei and P. neglectus) in wheat ." Australian Journal of Agricultural Research. 56 (4), pp. 345-352. https://doi.org/10.1071/AR04223
Genetic analysis of resistance to root-lesion nematode (Pratylenchusthornei) in wheat
Zwart, R. S., Thompson, J. P. and Godwin, I. D.. 2004. "Genetic analysis of resistance to root-lesion nematode (Pratylenchusthornei) in wheat." Plant Breeding. 123 (3), pp. 209-212. https://doi.org/10.1111/j.1439-0523.2004.00986.x
Phytotoxicity of fosetyl Al and phosphonic acid to maize during production of vesicular-arbuscular mycorrhizal inoculum
Seymour, N. P., Thompson, J. P. and Fiske M. L.. 1994. "Phytotoxicity of fosetyl Al and phosphonic acid to maize during production of vesicular-arbuscular mycorrhizal inoculum ." Plant Disease: an international journal of applied plant pathology. 78 (5), pp. 441-446. https://doi.org/10.1094/PD-78-0441