Table 6.

Relationship between functional traits and year of variety release.

Trait	Year	Management	R2	P value	Slope
Grain yield [g m−2]	2017	Extensive	0.58	5.10 e −09 (***)	3.9
		Semi-intensive	0.48	3.40 e −07 (***)	4.2
		Intensive	0.47	4.60 e −07 (***)	3.3
	2018	Extensive	0.47	4.80 e −07 (***)	2.4
		Semi-intensive	0.64	2.40 e −10 (***)	3.7
		Intensive	0.54	3.00 e −08 (***)	3.5
Biomass [g m−2]	2017	Extensive	0.27	3.80 e −04 (***)	4.2
		Semi-intensive	0.30	1.60 e −04 (***)	5.0
		Intensive	0.10	0.038 (*)	2.3
	2018	Extensive	0.29	2.10 e −04 (***)	2.4
		Semi-intensive	0.44	1.60 e -06 (***)	3.3
		Intensive	0.32	1.00 e −04 (***)	3.0
Harvest index [–]	2017	Extensive	0.57	7.80 e −09 (***)	0.0016
		Semi-intensive	0.43	2.20 e −06 (***)	0.0013
		Intensive	0.50	1.70 e −07 (***)	0.0013
	2018	Extensive	0.37	1.70 e −05 (***)	0.0011
		Semi-intensive	0.51	1.20 e −07 (***)	0.0015
		Intensive	0.51	1.10 e −07 (***)	0.0015
Intercepted radiation [MJ m−2]	2017	Extensive	0.18	0.0055 (**)	8.50 e −04
		Semi-intensive	0.07	0.086 (ns)	3.90 e −04
		Intensive	0.04	0.18 (ns)	2.80 e −04
	2018	Extensive	0.03	0.31 (ns)	2.20 e −04
		Semi-intensive	0.20	0.0031 (**)	5.40 e −04
		Intensive	0.06	0.1 (ns)	3.20 e −04
Radiation use efficiency [g MJ−1]	2017	Extensive	0.20	0.0028 (**)	0.0037
		Semi-intensive	0.32	9.40 e −05 (***)	0.0061
		Intensive	0.08	0.062 (ns)	0.0023
	2018	Extensive	0.31	1.30 e −04 (***)	0.0032
		Semi-intensive	0.36	2.50 e −05 (***)	0.0034
		Intensive	0.31	1.40 e −04 (***)	0.0035
Ear emergence [°C]	2017	Intensive	0.08	0.066 (ns)	–0.63
	2018	Intensive	0.05	0.17 (ns)	–0.40

R2, P value, and slope of the linear model trait explained by year of release are shown for every trait, year, and management combination. Comments in parenthesis: P value >= 0.05 (ns), P value < 0.05 (*), P value < 0.01 (**), P value < 0.001 (***).