Abstract
Sources of partial resistance to crown rot caused by Fusarium pseudograminearum are detected in mature plants grown in artificially inoculated soil in the field. The resistance in most but not all of these sources can also be detected in seedlings. In order to determine whether partial resistance is related to depth of crown formation, this character was measured in 13 cultivars/lines with a range of reaction to crown rot. It was also measured in doubled haploid plants from the cross, Batavia/2–49. Crown depths varied from 17.1 mm to -2.3 mm (above ground) in pots in a waterbath at 25 °C and from 43.5 mm to 20.7 mm when plants were grown in the field. The correlation coefficient between relative susceptibility to crown rot (Field test) and crown depth of 13 cultivars/lines was 0.57 (p ≤ 0.05). With the exception of the cultivars, Sunco and Pelsart, partial resistance to crown rot was inversely related to depth of crown formation. This indicates that depth of crown formation may be partly responsible for the reaction of a cultivar/line to crown rot. Depth of crown formation was also measured in susceptible and partially resistant cultivars/lines grown from seed planted at different depths. As depth of seeding increased, depth of crown formation in partially resistant and susceptible cultivars/lines increased in similar proportions.
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References
Allan, R.E. & J.A. Pritchett, 1973. Inheritance and association of subcrown-internode length withcoleoptile and culm length in a winter wheat cross. Crop Sci 13: 639–641.
Ashraf, M. & G.A. Taylor,1974. Morpho-developmental factors related to winter survival of wheat. I. Association of characteristics of dark grown seedlings and winter survival. Crop Sci 14: 449–502.
Brennan, J.P. & G.M. Muryay, 1998. EconomicImportance of Wheat Diseases in Australia, NSW Agriculture, Wagga Wagga.
Burgess, L.W., D. Backhouse, B.A. Summerell, A.B. Pattison, T.A. Klein, R.J. Esdaile & G. Ticehurst, 1993. Long-term effects of stubble management on the incidence of infection of wheat by Fusarium graminearum Schw. Group 1. Aust J Exper Agric Anim Husb 33: 451–456.
Carranza, T.M., 1961. Root decay and blight of cereals in Argentina caused by Gibberella zeae(Fusarium graminearum). Revista Facultad Agronomic (3rd Ser.) La Plata Univ. V. 37: 35–38.
Cook, R.J.,1968. Fusarium root and foot rot of cereals in the Northwest. Phytopathology 58: 127–131.
Dodman, R.L. & G.B. Wildermuth, 1987. Inoculation methods for assessing resistance in wheat to crown rot caused by Fusarium graminearum Group 1. Aust J Agric Res 38: 473–486.
Hunt, L.A., B.D. McKersie & D.G. Tanner, 1983.Crown depth in eastern soft white winter wheats. Crop Sci 23: 613–614.
Martin, J.M., C.W. Smith & A.H. Ferguson, 1988. Subcrown internode length of spring wheat and barley as influenced by light and soil temperature. Agron J 80: 571–573.
Percival, J., 1921. The Wheat Plant - A Monograph. E.P. Dutton andcompany, NY.
Poulos, J.M. & R.E. Allan, 1989. Genetic and environmental considerations for evaluating crownposition of wheat. Theor Appl Genet 78: 359–364.
Purss, G.S., 1966. Studies of varietal resistance to crownrot of wheat caused by Fusarium graminearum Schw, Qld J Agric & Anim Sci 23: 475–498.
Sallans, B.J.,1961. Inherent differences of crowns in wheat and barley. Can J Plant Sci 41: 493–498.
Taylor, J.W. & M.A. McCall, 1936. Influence of temperature and other factors on the morphology of the wheat seedling. J Agric Res 52: 557–568.
VanWyk, P.S., G.D.C. Pauer, J. Rheeder, O. Los & W.F.O. Marasas, 1988. Reactionof different wheat cultivars to crown rot caused by Fusarium graminearum Group 1. Phytophylactica 20: 69–72.
Wearing, A.H. & L.W. Burgess, 1977. Distribution of Fusarium roseum 'Graminearum' Group 1 and its mode ofsurvival in eastern Australian wheat belt soils. Trans Brit Mycol Soc 69: 429–442.
Webb, R.B. & D.E. Stephens, 1936. Crown and root development in wheat varieties. J Agric Res 52: 569–583.
Wildermuth, G.B. & G.S. Purss, 1971. Further sources of field resistance to crown rot (Gibberella zeae) of cereals inQueensland. Aust J Exper Agric & Anim Husb 11: 455–459.
Wildermuth, G.B. & R.B. McNamara, 1994Testing wheat seedlings for resistance to crown rot caused by Fusarium graminearum Group 1. Plant Dis 78: 949–953.
Wildermuth, G.B., R.B. McNamara & T. Sparks, 1999. Different Expressions of Resistance to Crown Rot inWheat. Proc 1st Aust Soilborne Dis Conf, pp. 79–80.
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Wildermuth, G., McNamara, R. & Quick, J. Crown depth and susceptibility to crown rot in wheat. Euphytica 122, 397–405 (2001). https://doi.org/10.1023/A:1012947516161
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DOI: https://doi.org/10.1023/A:1012947516161