Statistical support of selection decisions at early stage of cereal breeding. Part II. Empirical comparison of treatment effects estimation methods
Katarzyna Ambroży
katarzyna.ambrozy-deregowska@up.poznan.plKatedra Metod Matematycznych i Statystycznych, Uniwersytet Przyrodniczy w Poznaniu (Poland)
Ewa Bakinowska
Katedra Metod Matematycznych i Statystycznych, Uniwersytet Przyrodniczy w Poznaniu (Poland)
Jan Bocianowski
Katedra Metod Matematycznych i Statystycznych, Uniwersytet Przyrodniczy w Poznaniu (Poland)
Anna Budka
Katedra Metod Matematycznych i Statystycznych, Uniwersytet Przyrodniczy w Poznaniu (Poland)
Wiesław Pilarczyk
Katedra Metod Matematycznych i Statystycznych, Uniwersytet Przyrodniczy w Poznaniu (Poland)
Bogna Zawieja
Katedra Metod Matematycznych i Statystycznych, Uniwersytet Przyrodniczy w Poznaniu (Poland)
Abstract
In the paper the empirical comparison of eight methods of estimation of treatment effects in one-replicate trials (with replicated standards) is reported. The data from experiments on spring wheat, spring barley and winter wheat performed at Choryń, Kobierzyce, Polanowice, Modzurów and Nagradowice form a basis for all considerations. There were from one to five standard varieties used in particular trials. Different criteria were used. The uniformity of distribution of chosen (the best) lines in experimental area was one of these criteria. Another one based on comparison of the estimates of treatment effects with the same effects obtained when classical analysis of variance in muti-replicated trials was applied. Selection of explicit best method of estimation of treatment effects is difficult (or even impossible) as the decisions on superiority of a particular method is dependent on local type of field variability. Nevertheless, it is to be mentioned than in all cases the worst method was the method of raw data. The best were methods eliminating spatial relationships between plots.
Supporting Agencies
Keywords:
cereal plant breeding trials, methods of selection, unreplicated trialsReferences
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Authors
Katarzyna Ambrożykatarzyna.ambrozy-deregowska@up.poznan.pl
Katedra Metod Matematycznych i Statystycznych, Uniwersytet Przyrodniczy w Poznaniu Poland
Authors
Ewa BakinowskaKatedra Metod Matematycznych i Statystycznych, Uniwersytet Przyrodniczy w Poznaniu Poland
Authors
Jan BocianowskiKatedra Metod Matematycznych i Statystycznych, Uniwersytet Przyrodniczy w Poznaniu Poland
Authors
Anna BudkaKatedra Metod Matematycznych i Statystycznych, Uniwersytet Przyrodniczy w Poznaniu Poland
Authors
Wiesław PilarczykKatedra Metod Matematycznych i Statystycznych, Uniwersytet Przyrodniczy w Poznaniu Poland
Authors
Bogna ZawiejaKatedra Metod Matematycznych i Statystycznych, Uniwersytet Przyrodniczy w Poznaniu Poland
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