Summary
We examined the inheritance, heritability, and breeding behaviour of resistance to Septoria tritict in the spring wheat cultivars Seabreeze, Veranopolis, and IAS-20 in crosses to the susceptible Australian spring cultivar Gamenya. Resistance in Seabreeze was higher than that in Veranopolis and IAS-20. Inheritance of resistance in Seabreeze seems to be determined by at least three recessive genes. Resistance in Veranopolis and IAS-20 might be due to a single gene. Similarity of inheritance patterns and breeding behaviour of the resistance from Veranopolis and IAS-20 and the common ancestry of these two cultivars suggest that they may carry the same gene. Standard unit heritabilities of Septoria scores, as measured by correlation of F2 plant with F3 family mean data, were high (57–68%). Parent offspring genetic correlations confirmed previously reported associations between resistance and lateness and resistance and tall plant height, but correlations were not sufficiently high to be a major obstacle to selection. Resistance in Veranopolis and IAS-20 were easily recovered in first backcrosses while that in Sea breeze was more difficult to recover.
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References
Eyal, Z., Z. Amiri & I. Wahl 1973. Physiologic specialization of Septoria tritici. Phytopathology 63: 1087–1091.
Eyal, Z. & O. Ziv 1974. The relationship between epidemics of Septoria leaf blotch and yield losses in spring wheat. Phytopathology 64: 1385–1389.
Frey, K. J. & T. W. Horner 1957. Heritability in standard units. Agron. J. 49: 59–62.
Hazel, L. N. 1943. The genetic basis for constructing selection indices. Genetics 28: 476–490.
Narvaez, I. & R. M. Caldwell 1957. Inheritance of resistance of leaf blotch of wheat caused by Septoria tritici. Phytopathology 47: 529 (Abstr.).
Patterson, F. L., J. J. Roberts, R. E. Finney, G. E. Shaner, R. L. Gallun & H. W. Ohm, 1974. Oasis soft red winter wheat, resistant to Septoria leaf blotch. Indiana Agric. Exp. Stn Bull. 40. 5 p.
Prestes, A. M. 1976. Septoria tritici Rob. ex Desm: Host relationships, varietal response, and influence on the development of wheat roots. Dissertation Abstracts International, Series B, 37: 2601–2602.
Rillo, A. O. & R. M. Caldwell 1966. Inheritance of resistance to Septoria tritici in Triticum aestivum subsp. vulgare Bulgaria 88. Phytopathology 56: 897 (Abstr.).
Rosielle, A. A. 1972. Sources of resistance in wheat to speckled leaf blotch caused by Septoria tritici. Euphytica 21: 152–161.
Saari, E. E. & R. O. Wilcoxon 1974. Plant disease situation of high-yielding dwarf wheats in Asia and Africa. A. Rev. Phytopathol. 12: 49–68.
Shaner, G., R. E. Finney & F. L. Patterson 1975. Expression and effectiveness of resistance in wheat Septoria leaf blotch. Phytopathology 65: 761–766.
Shipton, W. A., W. J. R. Boyd, A. A. Rosielle & B. L. Shearer 1971. The common Septoria diseases of wheat. Bot. Rev. 37: 231–262.
Stewart, D. M., A. Hafiz & I. Abdel Hak 1972. Disease epiphytotic threats to high yielding and local wheats in the Near East. FAO (Food Agric. Organ., UN) Plant Prot. Bull. 20: 50–57.
Zeven, A. C. & Nineke Ch. Zeven-Hissink 1976. Genealogies of 14000 wheat varieties. Netherlands Grain Centre, Wageningen & The International Maize and Wheat Improvement Center, Mexico. 121 p.
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Contribution from the Department of Agriculture Western Australia.
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Rosielle, A.A., Brown, A.G.P. Inheritance, heritability and breeding behaviour of three sources of resistance to Septoria tritici in wheat. Euphytica 28, 385–392 (1979). https://doi.org/10.1007/BF00056596
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DOI: https://doi.org/10.1007/BF00056596