ABSTRACT
This chapter considers two possibilities about robust sphering: variation within the genotypes (G)× environments (E) (in C×E) subtable (G out) (where C stands for the maturity class determined by days to flowering); and variation in the subtable G combined with the G×E (in C×E) subtable (G in). Fractionation by a Euclidean distance with G in (and conceivably with E also in) is preferred to display the outcomes for various G’s, or group-medians of G’s, against an environment coordinate. ‘G in’ is preferred to display the outcomes for G’s against medians of G adjusted for the typical (probably median) response for each environment. Fractionation based on a ‘G out’ Euclidean distance is preferred to adjust further for a main effect of G — essentially displaying the content of the G×E subtable.
