Missing observations in the analysis of stability

Abstract

In crop variety testing it is frequently of interest to estimate measures of yielding stability or phenotypic stability. The common procedures for stability analysis require a balanced two-way table of genotypes and environments, in which all cells are filled. Frequently, however, empirical data sets are unbalanced due to missing observations. This paper explores methods to estimate stability when some cells are empty. A set of wheat data is used to exemplify these methods. © 1994 The Genetical Society of Great Britain.