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Fig. 11. Mean grain yield of all population crosses involving either CCGP A/B C0 ({blacktriangleup}), A CA (•), or B CA ({circ}), and per se grain yield of either CCGP A or B C0 ({diamondsuit}), A CA ({blacksquare}), or B ({square}) 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.