Table 3.

Phenotypic correlations between maximum grain dimensions and grain dry weight accumulation

Grain filling trait	Maximum grain length	Maximum grain width	Maximum grain height	Maximum grain volume
Initial grain filling rate	0.16	0.67**	0.72**	0.62**
Rapid grain filling rate	0.75**	0.61**	0.76**	0.86**
Late grain filling rate	0.63**	0.12	0.30	0.46*
Average grain filling rate	0.71**	0.69**	0.85**	0.92**
Maximum grain filling rate	0.75**	0.50**	0.69**	0.80**
Onset of grain filling	0.25	–0.37*	–0.27	–0.13
Grain filling duration	–0.42*	–0.17	–0.17	–0.25
t max a	–0.15	–0.41*	–0.34	–0.31

^a t _max, time at the maximum grain filling rate.

*P<0.05, **P<0.01.