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Fig. 4. (a) Mean kernel number per uppermost ear (KN1) vs. 1.5-g d–1 intervals of plant growth rates during a period bracketing silking (PGRs), (b) mean growth rate of the topmost ear (EGRs) vs. 1.5-g d–1 intervals of PGRs in an older (DKF880) and newer hybrid (DK752) in Exp. 3. Values at the x axis indicate the upper limit of the interval unless indicated otherwise. Bars indicate the standard error. Number of individuals in each treatment ranged from 10 to 40 depending on the range of PGRs. **indicates significantly different from the control at P < 0.05.
