Biometrical Letters vol. 48(2), 2011, pp. 149-157
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THE INFLUENCE OF REDUCTION OF THE NUMBER OF MEASUREMENTS ON DECISIONS CONCERNING DISTINCTNESS OF PERENNIAL RYEGRASS VARIETIES Wiesław Pilarczyk1,2, Bogna Kowalczyk2 1Department of Mathematical and Statistical Methods, Poznan University of Life Sciences, Wojska Polskiego 28, 60-637 Poznań, Poland; e-mail: wpilar@up.poznan.pl 2 The Research Centre for Cultivar Testing at Słupia Wielka, 63-000 Środa Wlkp., Poland |
This paper discusses the problem of reduction of number of measurements in DUS (distinctness, uniformity and stability) trials on perennial ryegrass. The considerations are based on the results of DUS trials performed by the Research Centre for Cultivar Testing at the Experimental Station at Słupia Wielka in the years 2005-2009. It is shown that a reduction in the number of measurements from 60 to 30 will have very limited influence on decisions about the distinctness of ryegrass varieties.
DUS trials, number of measurements, perennial ryegrass
