Biometrical Letters Vol. 44(2), 2007, pp. 143-154
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AN APPLICATION OF LOGISTIC MODELS FOR COMPARISON OF VARIETIES OF SEED PEA WITH RESPECT TO LODGING Ewa Bakinowska, Radosław Kala Department of Mathematical and Statistical Methods, Agricultural University of Poznań,Wojska Polskiego 28, 60-637 Poznań, Poland,ewabak@au.poznan.pl, kalar@au.poznan.pl |
In the paper a logistic model for the analysis of threshold traits observed at several time points is discussed. The theoretical considerations are illustrated with the use of data from a real experiment concerning the lodging of three varieties of seed pea. In the analysis three estimation procedures, following from the least squares principle, were used and compared.
logistic model, threshold models, weighted least squares method
