Journal
GENOME
Volume 53, Issue 11, Pages 1002-1016Publisher
CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS
DOI: 10.1139/G10-080
Keywords
multi-environment trials; factor analytic models; pedigrees; selection
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Exploring and exploiting variety by environment ( V x E) interaction is one of the major challenges facing plant breeders. In paper I of this series, we presented an approach to modelling V x E interaction in the analysis of complex multi-environment trials using factor analytic models. In this paper, we develop a range of statistical tools which explore V x E interaction in this context. These tools include graphical displays such as heat-maps of genetic correlation matrices as well as so-called E-scaled uniplots that are a more informative alternative to the classical biplot for large plant breeding multi-environment trials. We also present a new approach to prediction for multi-environment trials that include pedigree information. This approach allows meaningful selection indices to be formed either for potential new varieties or potential parents.
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