Abstract
Stagonospora nodorum blotch (SNB) of wheat caused by Stagonospora nodorum (Berk.) Castellani & E.G. Germano is among the major foliar diseases of wheat worldwide. The response of four wheat cultivars for reaction to infection by isolates/mixture of S. nodorum was tested on detached and intact seedling leaves in the laboratory and glasshouse experiments, respectively. The four wheat cultivars tested significantly differed from each other in response to infection by the isolates/mixture of S. nodorum. Similarly, the aggressiveness of the four isolates/mixture of the pathogen on the four wheat cultivars was significantly different as demonstrated by the parameters tested in the two experiments. However, no significant (p ≤ 0.05) isolate x cultivar interaction was observed for all the parameters tested in the two experiments. Highly significant positive or negative correlations were observed between parameters, i.e., disease severity (DS), incubation period(IP), and size of necrotic lesions (SNL), tested on detached and intact seedling leaves, respectively. This suggests that use of the detached leaf technique has considerable promise for quick screening of wheat cultivars against SNB.
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References
Agrios, G.N., 1988. Plant Pathology. Academic Press, New York.
Allingham, E.A. & L.F. Jackson, 1981. Variation in pathogenicity, virulence and aggressiveness of Septoria nodorum in Florida. Phytopathology 71: 1080–1085.
Anonymous (1976), Guide for the Assessment of Cereal Diseases. Ministryof Agriculture, Fisheries and Food, UK.
Baker, E.A. & I.M. Smith, 1978. Development of resistant and susceptiblereactions in wheat on inoculation with Septoria nodorum. Trans Br Mycol Soc 71: 475–482.
Benedikz, P.W.,C.J. Mappledoram & P.R. Scott, 1981. A laboratory technique for screening cereals for resistance to Septoria nodorum using detached seedling leaves. Trans Br Mycol Soc 77: 667–669.
Bostwick, D.E., H.W. Ohm & G. Shaner,1993. Inheritance of septoria glume blotch resistance in wheat. Crop Sci 33: 439–443.
Cooke, B.M.,1980. The use of coolplates for culturing photosporogenetic fungi. Bull British Mycol Soc 14: 137–138.
Cooke, B.M. & G. Jones, 1970. The effects of near-ultraviolet irradiation and agar medium on the sporulation ofSeptoria nodorum and S. tritici. Trans Br Mycol Soc 54: 221–226.
Eyal, Z., A.L. Scharen, J.M. Prescott & M. Van Ginkel, 1987. The Septoria Diseases of Wheat: Concepts and Methods of Disease Management. CIMMYT, Mexico, D.F.: Mexico.
King, J.E., R.J. Cook & S.C. Melville, 1983. A review of Septoria diseasesof wheat and barley. Ann Appl Biol 103: 345–373.
Krupinsky, J.M., 1997. Aggressiveness of Stagonosporanodorum isolates obtained from wheat in the Northern Great Plains. Plant Disease 81: 1027–1031.
Ma, H. & G.R. Hughes, 1993. Resistance of septoria nodorum blotch in several Triticum species. Euphytica 70: 151–157.
Rufty, R.C., T.T. Hebert & C.F. Murphy, 1981. Variation in virulence of isolates of Septoria nodorum.Phytopathology 71: 593–596.
Scharen, A.L. & Z. Eyal, 1983. Analysis of symptoms on spring andwinter wheat cultivars inoculated with different isolates of S. nodorum. Phytopathology 73: 143–147.
Scharen, A.L.,Z. Eyal, M.D. Huffman & J.M. Prescott, 1985. The distribution and frequency of virulence genes in geographically separated populations of Leptosphaeria nodorum. Phytopathology 75: 1463–1468.
Tottman, D.R. & R.J. Makepeace, 1979. An explanation of the decimal code for growth stages of cereals, with illustrations. Ann Appl Biol 93: 221–234.
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Mebrate, S.A., Cooke, B. Response of wheat cultivars to infection by Stagonospora nodorum isolates/mixture on detached and intact seedling leaves. Euphytica 122, 263–268 (2001). https://doi.org/10.1023/A:1012904926659
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DOI: https://doi.org/10.1023/A:1012904926659