Effect of reduced number of replications on efficiency of yield estimation of new winter wheat strains (Triticum aestivum L.)
Stanisław Węgrzyn
s.wegrzyn@ihar.edu.plZakład Roślin Zbożowych, Instytut Hodowli i Aklimatyzacji. Roślin, Oddział w Krakowie (Poland)
Abstract
The data used in this study were obtained from 152 advanced winter wheat strain trials conducted during eleven years. The incomplete block designs with four replications were applied. The standard analysis of variance was performed for each trial. The following genetic parameters were considered: variation coefficient of error, phenotypic (PCV) and genotypic (GCV) coefficients of variation, genotypic (G), genotype-environment interaction (GE) and error (E) components of variation. The genetic index of gain by selection (GPI) was also estimated. Moreover, the Pearson’s (rp) and Spearman’s (rs) correlation coefficients between yield means with reduced number of replications in relation to those for all replications were analysed. The obtained results show, that two replications were sufficient for yield evaluation of winter wheat strains.
Keywords:
accuracy trial, genetic components, genetic gain index, correlation, replication, genetic variability, winter wheatReferences
Bhatt G.M.,. Ellison F.W. Marshall D.R. 1984. A case for unreplicated plots for multi-step yield testing in wheat. Aust. J. Agric. Res. 35: 107 — 114.
Google Scholar
Bos I. 1983. The optimum number of replications when testing lines of families on a fixed number of plots. Euphytica 32: 311 — 318.
Google Scholar
Bradu D., Gabriel K. R. 1978. The biplot as a diagnostic tool for models of two-way tables. Technometrics 20: 47 — 68.
Google Scholar
Gauch H.G. jr., Zobel R.W. 1988. Predictive and postdictive success of statistical analyses of yield trials. Theor. Appl. Genet. 76: 1 — 10.
Google Scholar
Gauch, H.G. jr., Zobel R.W. 1989. Accuracy and selection success in yield trial analyses. Theor. Appl. Genet. 77: 473 — 481.
Google Scholar
Snedecor G. W., Cochran W. G. 1980. Statistical methods. 7th ed. Iowa State University Press, Ames: 44-45 and 264 — 265.
Google Scholar
Talbot M. 1984. Yield variability of crop varieties in the UK. J.Agric.Sci.102: 315 — 321.
Google Scholar
Townley-Smith T. F.,. Hurd E. A., McBean D.S. 1973. Techniques of selection for yield in wheat. Proc. 4th Int. Wheat Genetics Symposium. Missouri. Agr. Exp. Sta., Columbia.
Google Scholar
Wricke G., Weber W. E. 1986. Quantitative genetics and selection in plant breeding. Walter de Gruyter, Berlin, New York.
Google Scholar
Authors
Stanisław Węgrzyns.wegrzyn@ihar.edu.pl
Zakład Roślin Zbożowych, Instytut Hodowli i Aklimatyzacji. Roślin, Oddział w Krakowie Poland
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