title: Effects of genotype-environment interactions on genetic correlations.
abstract: The objective of the work presented here was to investigate the influence of genotype-environment interaction on genetic correlations. In our theoretical models we have considered plant populations consisting of random samples of lines from chromosome-doubled haploids produced from F 1 gametes, highly inbred SSD-lines, and clones of randomly breeding populations grown in two and multiple environments. The results of our theoretical considerations are that if genotype-environment interaction exists, great differences are expected to occur in the estimates of genetic correlation coefficients obtained in different environments. Based on the variance and covariance components for genotype-environment interaction we suggest a new type of correlation coefficient, called genotype-environment correlation, r ge . Our theory has been applied to several series of experiments. Estimates are presented from two series, both of which demonstrate clearly the consequences of genotype-environment interaction on the genetic correlations.
authors.affiliation: Department of Mathematical Science, Agricultural University of Norway, P.O. Box 35, 1432 Ås-NLH, Norway.
authors.forename: A H
authors.initials: AH
authors.lastname: Aastveit
authors.forename: K
authors.initials: K
authors.lastname: Aastveit