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RESEARCH ARTICLE
Contents Vol 59(5)

Resistance to root-lesion nematodes (Pratylenchus thornei and P. neglectus) in synthetic hexaploid wheats and their durum and Aegilops tauschii parents

J. P. Thompson
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- Author Affiliations

Department of Primary Industries and Fisheries, Leslie Research Centre, PO Box 2282, Toowoomba, Qld 4350, Australia. Email: john.thompson@dpi.qld.gov.au

Australian Journal of Agricultural Research 59(5) 432-446 https://doi.org/10.1071/AR07222
Submitted: 14 June 2007  Accepted: 22 February 2008   Published: 12 May 2008

Abstract

Root-lesion nematodes (Pratylenchus thornei Sher and Allen and P. neglectus (Rensch) Filipijev and Schuurmans Stekhoven) cause substantial yield loss to wheat crops in the northern grain region of Australia. Resistance to P. thornei for use in wheat breeding programs was sought among synthetic hexaploid wheats (2n = 6x = 42, AABBDD) produced through hybridisations of Triticum turgidum L. subsp. durum (Desf.) Husn (2n = 4x = 28, AABB) with Aegilops tauschii Coss. (2n = 2x = 14, DD). Resistance was determined for the synthetic hexaploid wheats and their durum and Ae. tauschii parents from the numbers of nematodes in the roots of plants grown for 16 weeks in pots of pasteurised soil inoculated with P. thornei. Fifty-nine (32%) of 186 accessions of synthetic hexaploid wheats had lower numbers of nematodes than Gatcher Selection 50a (GS50a), a partially resistant bread wheat. Greater frequencies of partial resistance were present in the durum parents (72% of 39 lines having lower nematode numbers than GS50a) and in the Ae. tauschii parents (55% of 53 lines). The 59 synthetic hexaploids were re-tested in a second experiment along with their parents. In a third experiment, 11 resistant synthetic hexaploid wheats and their F1 hybrids with Janz, a susceptible bread wheat, were tested and the F1s were found to give nematode counts intermediate between the respective two parents. Synthetic hexaploid wheats with higher levels of resistance resulted from hybridisations where both the durum and Ae. tauschii parents were partially resistant, rather than where only one parent was partially resistant. These results suggest that resistance to P. thornei in synthetic hexaploid wheats is polygenic, with resistances located both in the D genome from Ae. tauschii and in the A and/or B genomes from durum. Five synthetic hexaploid wheats were selected for further study on the basis of (1) a high level of resistance to P. thornei of the synthetic hexaploid wheats and of both their durum and Ae. tauschii parents, (2) being representative of both Australian and CIMMYT (International Maize and Wheat Improvement Centre) durums, and (3) being representative of the morphological subspecies and varieties of Ae. tauschii. These 5 synthetic hexaploid wheats were also shown to be resistant to P. neglectus, whereas GS50a and 2 P. thornei-resistant derivatives were quite susceptible. Results of P. thornei resistance of F1s and F2s from a half diallel of these 5 synthetic hexaploid wheats, GS50a, and Janz from another study indicate polygenic additive resistance and better general combining ability for the synthetic hexaploid wheats than for GS50a. Published molecular marker studies on a doubled haploid population between the synthetic hexaploid wheat with best general combining ability (CPI133872) and Janz have shown quantitative trait loci for resistance located in all 3 genomes. Synthetic hexaploid wheats offer a convenient way of introgressing new resistances to P. thornei and P. neglectus from both durum and Ae. tauschii into commercial bread wheats.

Additional keyword: wheat breeding.


Acknowledgments

The Grains Research and Development Corporation (GRDC) financially supported this work. I thank R. F. Eastwood (formerly of DPI Victoria, Horsham), R. A. McIntosh (University of Sydney), and R. A. Hare (NSW DPI, Tamworth) for supplying seed and information on the accessions, and T. G. Clewett and M. I. Haak for technical assistance. R. F. Eastwood provided seed from the hybrids with Meering and Condor, and I. C. Haak (formerly of Qld DPI &F) from the hybrids with Janz. The following people helped in cross-referencing accession numbers: A. Mujeeb-Kazi (formerly of Wide-Cross Program, CIMMYT, Mexico); E. S. Lagudah (CSIRO Division of Plant Industry, Canberra); and W. J. Raupp (Wheat Genetics Resource Center, Kansas State University, USA).


References


Brennan PS, Martin DJ, Thompson JP (1994) Triticum aestivum ssp. vulgare (bread wheat) cv. Pelsart. Australian Journal of Experimental Agriculture 34, 864–865.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Cox TS (1998) Deepening the wheat gene pool. Journal of Crop Production 1, 1–25.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Done T (1997) ‘Baxter’ syn QT 6258 Res. Plant Varieties Journal 10, 55–56. open url image1

Done T (2004) ‘EGA Wylie’. Plant Varieties Journal 17, 300–302. open url image1

Eastwood RF, Lagudah ES, Appels R (1994a) A directed search for DNA sequences tightly linked to cereal cyst nematode resistance genes in Triticum tauschii. Genome 37, 311–319.
| Crossref |
open url image1

Eastwood RF , Lagudah ES , Appels R (1995) Biology and molecular genetic analysis of cereal cyst nematode resistance genes from the D genome of wheat. In ‘Proceedings of the 13th International Plant Protection Congress’. The Hague, The Netherlands. Abstract No. 85.

Eastwood RF, Lagudah ES, Appels R, Hannah M, Kollmorgen JF (1991) Triticum tauschii: a novel source of resistance to cereal cyst nematode (Heterodera avenae). Australian Journal of Agricultural Research 42, 69–77.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Eastwood RF , Lagudah ES , Young RM (1994b) Utilisation of Triticum tauschii as a source of CCN resistance. In ‘Proceedings of the 7th Assembly of Wheat Breeding Society of Australia’. Adelaide. pp. 133–136.

Feldman M, Sears ER (1981) The wild gene resources of wheat. Scientific American 244, 102–112. open url image1

Gill BS, Raupp WJ (1987) Direct genetic transfers from Aegilops squarrosa L. to hexaploid wheat. Crop Science 27, 445–450. open url image1

Govaars AG , Tibbitts SM (1994) Australian plant introductions. Accession list number 128. Nos. 133592–135434. Australian Plant Introduction Review (CSIRO, Australia) 25, A-12–A-19.

Huang R , Thompson JP , Reen RA (2006) Evaluation of resistance to root-lesion nematodes in F2 populations derived from doubled haploid wheat. In ‘Proceedings of the 13th Australasian Plant Breeding Conference’. (Australasian Plant Breeding Society: Christchurch, New Zealand)

Kaloshian I, Roberts PA, Thomason IJ (1989) Resistance to Meloidogyne spp. in allohexaploid wheat derived from Triticum turgidum and Aegilops squarrosa. Journal of Nematology 21, 42–47. open url image1

Lagudah ES , Appels R , McNeil D , Schachtman DP (1993) Exploiting the diploid ‘D’ genome chromatin for wheat improvement. In ‘Gene conservation and exploitation’. (Eds JP Gustafson, R Appels, R Raven) pp. 87–107. (Plenum Press: New York)

Moore S (1997) ‘Sunvale’ syn SUN 146F. Plant Varieties Journal 10, 58. open url image1

Mujeeb-Kazi A (1995) Interspecific crosses: hybrid production and utilisation. In ‘Utilizing wild grass biodiversity in wheat improvement: 15 years of wide cross research at CIMMYT’. Chapter 3, (Eds A Mujeeb-Kazi, GP Hettel) pp. 14–21. (CIMMYT: Mexico, DF)

Mujeeb-Kazi A , Hettel GP (1995) ‘Utilizing wild grass biodiversity in wheat improvement: 15 years of wide cross research at CIMMYT. Appendix 1, p. 119 and Appendix 2.’ pp. 120–125. (CIMMYT: Mexico, DF)

Nicol J, Rivoal R, Taylor S, Zaharieva M (2003) Global importance of cyst (Heterodera spp.) and lesion nematodes (Pratylenchus spp.) on cereals: distribution, yield loss, use of host resistance and integration of molecular tools. Nematology Monographs and Perspectives 2, 1–19. open url image1

Nombela G, Romero D (1999) Host response to Pratylenchus thornei of a wheat line carrying the Cre2 gene for resistance to Heterodera avenae. Nematology 1, 381–388.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Nombela G, Romero MD (2001) Field response to Pratylenchus thornei of a wheat line with the CreAet gene for resistance to Heterodera avenae. European Journal of Plant Pathology 107, 749–755.
| Crossref | GoogleScholarGoogle Scholar | open url image1

O’Reilly MM , Thompson JP (1993) Open pot culture proved more convenient that carrot callus culture for producing Pratylenchus thornei inoculum for glasshouse experiments. In ‘Pratylenchus Workshop, APPS Conference’. Hobart, July 1993. pp. 5–9.

Owen KJ , Clewett TG , Thompson JP (2001) Hosting ability for summer and winter grain crops for root-lesion nematodes (Pratylenchus thornei and P. neglectus). In ‘Proceedings of the 13th Biennial Plant Pathology Conference’. Cairns. p. 201. (The Australasian Plant Pathology Society: Cairns, Qld)

Owen KJ , Clewett TG , Thompson JP (2005) Long-term choice of rotation crops maximises wheat yields in Pratylenchus thornei-infested fields. In ‘Proceedings of the 15th Biennial Plant Pathology Conference’. p. 104. (The Australasian Plant Pathology Society: Cairns, Qld)

Payne RW , Baird DB , Cherry M , Gilmour AR , Harding SA , et al. (2002) ‘GenStat Release 6.1 reference manual.’ (VSN International: Oxford, UK)

Roberts PA, Van Gundy SD, Waines JG (1982) Reactions of wild and domesticated Triticum and Aegilops species to root-knot nematodes (Meloidgyne). Nematologica 28, 182–191. open url image1

Schmidt AL, McIntyre CL, Thompson JP, Seymour NP, Liu CJ (2005) Quantitative trait loci for root lesion nematode (Pratylenchus thornei) resistance in Middle-Eastern landraces and their potential for introgression into Australian bread wheat. Australian Journal of Agricultural Research 56, 1059–1068.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Steel GD , Torrie JH (1960) ‘Principles and procedures of statistics.’ (McGraw-Hill Book Company, Inc.: New York)

Taylor SP, Vanstone VA, Ware AH, McKay AC, Szot D, Russ MH (1999) Measuring yield loss in cereals caused by root lesion nematodes (Pratylenchus neglectus and P. thornei) with and without nematicide. Australian Journal of Agricultural Research 50, 617–622.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Thompson JP, Brennan PS, Clewett TG, Sheedy JG, Seymour NP (1999) Progress in breeding wheat for tolerance and resistance to root-lesion nematode (Pratylenchus thornei). Australasian Plant Pathology 28, 45–52.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Thompson JP , Clewett TG (1986) Research on root-lesion nematode—occurrence and wheat varietal reaction. Queensland Wheat Research Institute Biennial Report for 1982–1984, Queensland Department of Primary Industries. pp. 32–34.

Thompson JP , Greco N , Eastwood R , Sharma SB , Scurrah M (2000) Integrated control of nematodes of cool-season food legumes. In ‘Linking research and marketing opportunities for pulses in the 21st Century. Proceedings of the 3rd International Cool-Season Food Legumes Research Conference’. (Ed. R Knight) pp. 491–506. (Kluwer Academic Publishers: Dordrecht, The Netherlands)

Thompson JP, Haak MI (1997) Resistance to root-lesion nematode (Pratylenchus thornei) in Aegilops tauschii Coss., the D-genome donor to wheat. Australian Journal of Agricultural Research 48, 553–559.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Toktay H, McIntyre CL, Nicol JM, Ozkan H, Elekcioglu HI (2006) Identification of common root-lesion nematode (Pratylenchus thornei Sher et Allen) loci in bread wheat. Genome 49, 1319–1323.
| Crossref | PubMed |
open url image1

van Slageren MW (1994) Wild wheats: a monograph of Aegilops L. and Ambylopyrum (Jaub. & Spach) Eig (Poaceae). Wageningen Agricultural University Papers, The Netherlands. pp. 94–97.

Villareal RL, Mujeeb-Kazi A, Del Toro E, Crossa J, Rajaram S (1994) Agronomic variability in selected Triticum turgidum × T. tauschii synthetic hexaploid wheats. Journal of Agronomy & Crop Science 173, 307–317.
| Crossref |
open url image1

Zwart RS, Thompson JP, Godwin ID (2004a) Genetic analysis of resistance to root-lesion nematode (Pratylenchus thornei Sher and Allen) in wheat. Plant Breeding 123, 209–212.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Zwart RS, Thompson JP, Godwin ID (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, 345–352.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Zwart RS, Thompson JP, Sheedy JG, Nelson CJ (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, 525–530.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Zwart RS , Thompson JP , Williamson PM , Seymour NP (2004 b) Elite sources of resistance in wheat to root-lesion nematodes (Pratylenchus thornei and P. neglectus) and yellow spot (Pyrenophora tritici-repentis). In ‘Proceedings of the 3rd Australasian Soilborne Diseases Symposium’. p. 220. (South Australian Research and Development Institute: Adelaide, S. Aust.)