Table 5.

Significant (P < 0.05) Pearson correlation coefficients (r) for the relationships between traits assessed through remote sensing and yield, yield-related traits and crop phenology for each irrigation treatment and each image acquisition event (n = 19).

Trait	April 4th				April 30th				May 22nd
	ETa	T	H	LAI	ETa	T	H	LAI	ETa	T	H	LAI
Irrigation treatment: 100%ETc
Number of spikes/m2 (NSm2)					0.50*					0.48*
Number of grains per spike (NGS)							−0.53*				−0.69**
Thousand kernel weight (TKW)							0.63**				0.65**
Grain filling rate (GFR)							0.59**				0.71***
Plant height (PH)					0.51*		0.72***		0.59**		0.79***	0.57**
Days to heading (DH)					0.57*			0.47*	0.45*	0.56*
Days to anthesis (DA)					0.65**			0.49*	0.48*	0.58**
Grain filling duration (GFD)					−0.71***			−0.49*	−0.59**	−0.64**	−0.59**	−0.57*
Irrigation treatment: 50%ETc
Number of grains per spike (NGS)	−0.50*	−0.48*	−0.57*	−0.67**			−0.73***				−0.62**
Thousand kernel weight (TKW)			0.52*	0.48*			0.63**
Grain filling rate (GFR)			0.49*	0.51*			0.59**				0.53*
Plant height (PH)											0.52*
Days to heading (DH)						0.63**		0.48*	0.52*	0.58**
Days to anthesis (DA)						0.58**		0.47*	0.48*	0.58**
Days to maturity (DM)					0.52*				0.70***	0.55*
Rainfed
Number of spikes/m2 (NSm2)									0.59**
Number of grains per spike (NGS)	−0.57*				−0.56*	−0.46*
Thousand kernel weight (TKW)							0.46*
Plant height (PH)	0.50*			0.65**		0.54*			0.54*
Days to heading (DH)									0.59**
Days to maturity (DM)								0.63**
Grain filling duration (GFD)								0.55*

Traits with nonsignificant r values for any flight have been omitted. ET_a, actual evapotranspiration; T, actual transpiration; H, estimated plant height.

***P < 0.001; **P < 0.01 *P < 0.05.