Biometrical Letters Vol. 52(2), 2015, pp. 131-137
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A REMARK ON GENOTYPE SELECTION IN PLANT BREEDING PROJECTS
Ewa Bakinowska1, Andrzej Bichoński2, Radosław Kala3, Bogna Zawieja3 1 Institute of Mathematics, Poznan University of Technology, Piotrowo 3A, 60-965 Poznań, Poland, e-mail: ewa.bakinowska@put.poznan.pl 2Malopolska Breeding Company Polanowice, Zbożowa 4, 30-002 Kraków, Poland, e-mail: andrzejb@hbp.pl 3Department of Mathematical and Statistical Methods, Poznan University of Life Sciences, Wojska Polskiego 28, 60-637 Poznań, Poland, e-mail: kalar@up.poznan.pl, bogna13@up.poznan.pl |
One of the main problems in plant breeding is the selection of the best genotypes. Most often the selection is made using yield as a main trait of continuous type, and ignoring the other traits of discrete type. Here, a simple procedure is proposed for dealing with the selection problem using not only the yield, but also an auxiliary discrete trait. The method is based on transforming the continuous variable into a discrete one and testing the dependence of variables with the use of contingency tables. The procedure is illustrated by a real unreplicated experiment with winter wheat.
continuous trait, discrete trait, contingency table, chi-squared test
