Br. Cullis et al., THE ANALYSIS OF THE NSW WHEAT VARIETY DATABASE .2. VARIANCE COMPONENTESTIMATION, Theoretical and Applied Genetics, 92(1), 1996, pp. 28-39
The efficiency of various trialling systems for wheat variety evaluati
on in New South Wales (NSW) is considered. This involved the estimatio
n of the variance components due to genotype, genotype-by-year, genoty
pe-by-location and genotype-by-year-by-location. It is shown that ther
e is a significant reduction in the magnitude of these variance compon
ents by the inclusion of the interaction of genotype maturity, winter
habit and aluminium tolerance with environment.