22. Genotype X Environment Interaction

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Updated notes

AMMI (Additive main effects, multiplicative interaction) Models

Our discussion of the various ways to characterize interaction effects (pp. 672-678) failed to mention the powerful AMMI approach (Gauch 1988, 1992), which is an important major extension of the joint regression approach. An introduction can be found on pages 8-11 in the pdf file of Chapter 11 in Volume 2. AMMI analysis is very closely related to biplots, and there are a few commerical packages for such analysis.

Some references:


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Created 12 May 1995, last updated 20 Feb 1996

Bruce Walsh. jbwalsh@u.arizona.edu . Comments welcome.