Fig. 3. Frequency distributions of kernel no. plant^–1 for plants with plant growth rate during the period for kernal set bracketing silking (PGR_S) in the range 0.15 > PGR_S > 0.19 g plant^–1 GDD^–1 for two hybrids (CG60 x CG102 and CG60 x MBS1236) and their three parental inbred lines (CG60, CG102, and MBS1236) exposed to water stress (W, 2003 and 2004) and plant density stress (PD, 2004).