Summary
Durum wheat (Triticum durum Desf.) is the main cereal crop in Italy, mostly cultivated in Southern and Central regions. Improving grain yield has been the primary objective of most national breeding programs until the end of the’ 70s. The objective of this study was to evaluate durum wheat yield stability improvements achieved in Italy over twenty years through the national breeding programs. Data from 10 coordinated field trials carried out over two 3-year periods 6(1977–79 and 1996–98) were considered. Analysis of the mean yield, linear regression coefficients (b), coefficients of variability (CV), coefficients of determination (r2) and deviations from the regression (S2d) allowed us to identify, for each period considered, remarkable differences among different cultivars in terms of yield and yield stability. The stability analysis clearly identified, during 1977–79, two different subgroups of genotypes. The first (b<1) included cultivars registered in the National Durum Wheat collection before 1974 (Cappelli, Capeiti 8, Trinakria. Appulo, Isa 1), having high adaptability to low-input environments. In contrast, the second subgroup (b>1) included semidwarf cultivars such as Valnova, Valgerardo, Creso and Valfiora, highly sensitive to environmental variability and pronounced responsiveness to high-input environments. In 1996–1998 yield stability became a primary target. Therefore the national breeding programs promoted comparative trials over-time and over-space. All cultivars selected in those years had b values close to 1 and their mean yield was significantly higher compared to the 1977–79 cultivars. As a result, the most recent cultivars possess both high adaptability traits (typical of those tall cultivars selected in arid and semiarid regions before the 70s) and high yield potential, a trait associated with Rht alleles (Creso and “Val” cultivars).
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References
Anonymous, 1977–1998. National Network of Durum Wheat Performance Test. L’Informatore Agrario, Special Issue 39, 40 and 35, 36 for years 1977–1979 and 1996–1998, respectively.
Becker, H.C., 1981. Correlations among some statistical measures of phenotypic stability. Euphytica 30, 835–840.
Becker, H.C., Léon, J., 1988. Stability analysis in plant breeding. Plant Breed. 101, 1–23.
Comstock, R.E., Moll, R.H., 1963. Genotype-environment interactions. In: Hanson, W.D., Robinson, H.F.(Eds.), Statistical genetics and plant breeding. Natl. Acad. Sci. Publ. 982. Washington, DC.
D’Amato, F., 1989. The progress of Italian wheat production in the first half of the 20th century: the contribution of breeders. Agric. Med. 119, 157–174.
Eberhart, S.A., Russell, W.A., 1966. Stability parameters for comparing cultivars. Crop Sci. 6, 36–40.
Finlay, K.W., Wilkinson, G.N., 1963. The analysis of adaptation in a plant-breeding programme. Austr. J. Res. 14, 742–754.
Francis, T.R., Kannenberg, L.W., 1978. Yield stability studies in short season maize: I. A descriptive method for grouping genotypes. Can. J. Plant Sci. 58, 1029–1034.
Gale, M. D., Youssefian, S., 1985. Dwarfing genes of wheat. In: G. E. Russell (Ed.), Progress in plant breeding, pp. 1–35. Butterworth and Co., London.
Hanson, W.D., 1970. Genotypic stability. Theor. Appl. Genet. 40, 226–231.
Jalaluddin, M.D., Harrison, S.A., 1993. Repeatability of stability estimators for grain yield in wheat. Crop Sci. 33, 720–724.
Lin, C.S., Binns, M.R., Lefkovitch, L.P., 1986. Stability analysis: where do we stand? Crop Sci. 26, 894–900.
Lin, C.S., Binns, M.R., 1988. A method for analyzing cultivar x location x year experiments: a new stability parameter. Theor. Appl. Genet. 76, 425–430.
Miralles, D. J., Slafer, G. A., 1995. Yield, biomass and yield components in dwarf, semidwarf and tall isogenic lines of spring wheat under recommended and late sowing dates. Plant Breeding 114: 392–396.
Perkins, J.M., Jinks, J.L., 1968. Environmental and genotype-environmental components of variability. III Multiple lines and crosses. Heredity 23, 339–356.
Pinthus, M.J., 1973. Estimate of genotypic value: A proposed method. Euphytica 22, 121–123.
Reynolds, M. P., van Beem, J., van Ginkel, M., Hoisington, D., 1996. Breaking the yield barriers in wheat: A brief summary of the outcomes of an international consultation. In: M. Reynolds (Ed.), Increasing Yield Potential in Wheat: Breaking the barriers, pp. 1–10. CIMMYT Int. Symp., CIANO, Cd. Obregon, Mexico. CIMMYT, Mexico, D.F.
Romagosa, I., Fox, P.N., 1994. Genotype x environment interaction and adaptation. Plant Breeding: principles and prospects. Edited by M.D. Hayward, N.O. Bosemark and I. Romagosa. Published in 1993 by Chapman & Hall, London. ISBN 0 412 43390 7.
Shukla, G.K. 1972. Some statistical aspects of partitioning genotype-environmental components of variance. Heredity, 29, 237–245.
StatSoft, 1995. STATISTICA General Conventions and Statistics. Vol. I. StatSoft, Inc. Tulsa, Oklaoma.
Tollenaar, M., Lee, E.A. 2002. Yield potential, yield stability and stress tolerance in maize. Field Crop Res. 75, 2–3, 161–169.
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De Vita, P., Maggio, A. Yield Stability Analysis in Durum Wheat: Progress over the Last Two Decades in Italy. CEREAL RESEARCH COMMUNICATIONS 34, 1207–1214 (2006). https://doi.org/10.1556/CRC.34.2006.4.260
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DOI: https://doi.org/10.1556/CRC.34.2006.4.260