Diallel cross data analysis using biplot

For a diallel cross data matrix, a single GGE biplot can help address the following questions visually:

Rank the parents (as entries) based on combining ability with a particular tester;

Show general combining ability (GCA) of the parents;

Show specific combining ability (SCA) of the parents;

Show the best mating partner (as an entry) for each parent (as a tester);

Show heterotic groups;

Show the best crosses;

Show the best parents as tester;

Formulate hypotheses on the genetics of the parents; and

All the accessory functions listed for multi-environment trial data.