Vol: 37 Page: 71

Authors:
Bogna Zawieja
Wiesław Pilarczyk

Title:
 Further comparison of decisions concerning uniformity of rye varieties based on COYU approach and on Bennett’s test

Language: English

Keywords:
Bennett's test
coefficient of variation
DUS testing
uniformity

Summary:
Uniformity of new varieties are usually checked using COYU approach after collecting results of three years of trials. There are some other possibilities of testing uniformity as indicated in a papers by Zawieja and Pilarczyk (2005, 2006). In this paper the discrepancies between the decisions concerning uniformity of rye varieties taken with the support of two methods (COYU and Bennett’s test) are compared. The influence of degree of correlation between levels of expression of characteristics (mean values) and transformed standard deviations on the decisions concerning uniformity is investigated.

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