Some methods of analysing genotype-environment interaction

Abstract

Methods of analysing genotype-environment interaction were extensively reviewed by Freeman (1973) and Hill (1975). A large number of papers involving such analyses have been published since then, some of them providing new methods, particularly of the multivariate type. While making no pretensions to be a comprehensive review, the present paper attempts an examination of some of these new techniques. It also offers a critique of some established methods, while pointing out others which have been neglected. The methods considered include the linear regression approach and related stability parameters, cluster analysis, principal components analysis, geometrical methods and stochastic dominance. In all these methods, environments are measured by the mean value of the genotypes grown in them: a case is made for research into the use of environmental variables. © 1986 The Genetical Society of Great Britain.