Fig. 11. Mean grain yield of all population crosses involving either CCGP A/B C0 (
), A CA (), or B CA (
), and per se grain yield of either CCGP A or B C0 (
), A CA (
), or B (
) populations over six environments. Dashed lines represent the response of the C0 population and solid lines represent the response of the CA populations over a range of environments. Environmental index is the grand mean grain yield of the experiment in that environment.