. 2016 Jul 15;7:1024. doi: 10.3389/fpls.2016.01024

Table 6.

Correlation between NUE-related parameters and growth-related parameters.

Parameters	Total N uptake	NUEg	NUEb	NHI
Total growth duration	0.54^**	0.17 ns	0.61^**	−0.38^*
Daily grain yield	0.36^*	0.46^**	0.30 ns	−0.10 ns
Stem No. m⁻² at heading	0.20 ns	−0.41^*	0.44^**	−0.60^**
Plant height at heading	0.39^*	0.12 ns	0.26 ns	−0.06 ns
Leaf area index at heading	0.80^**	−0.27 ns	0.82^**	−0.76^**
Specific leaf weight at heading	0.08 ns	−0.30 ns	−0.01 ns	−0.08 ns
Crop growth rate before heading	0.79^**	−0.18 ns	0.77^**	−0.67^**
Biomass at heading	0.70^**	−0.11 ns	0.72^**	−0.56^**
Biomass during grain filling period	−0.79^**	0.58^**	−0.89^**	0.99^**
Panicle No m⁻²	0.29 ns	−0.37^*	0.49^**	−0.62^**
Spikelets per panicle	−0.07 ns	0.42^*	−0.34 ns	0.45^*
Spikelets m⁻²	0.17 ns	−0.14 ns	0.05 ns	−0.06 ns
Grain filling percentage	0.59^**	0.24 ns	0.72^**	−0.48^**
Grain weight	0.01 ns	0.26 ns	−0.01 ns	0.20 ns
Leaf N concentration at heading	0.23 ns	−0.09 ns	0.12 ns	−0.23 ns
Stem N concentration at heading	0.07 ns	0.14 ns	0.01 ns	−0.06 ns
Panicle N concentration at heading	−0.45^**	0.31 ns	−0.63^**	0.61^**

^* and ^**indicate significance at 0.05 and 0.01 probability level.