Table II. Variance partitioning within and between cultivars for traits measured as part of the controlled environment experiment and those used for both experiments (i.e. C_i* and R_d).

Variance attributed to cultivar provides an upper limit estimate of the contribution of genetics to observed trait variability. Trait abbreviations are as in Table II. Min and Max are the minimum and maximum trait values. The variance components were estimated by partitioning variance within and between cultivars with restricted maximum likelihood (REML).

Trait	Range		Variance Components		Variance Attributed to Cultivar
	Min	Max	Cultivar	Residual
					%
Ci*	3.07	5.60	4.172 × 10−2	0.20434	17.00
Rd	0.327	1.57	1.904 × 10−2	7.773 × 10−2	19.68
α	0.843	0.917	8.876 × 10−5	1.965 × 10−4	31.12
SPAD	28.0	41.5	1.909	5.341	26.33
AN	15.9	27.8	2.905	4.772	37.84
Amax	19.5	38.9	6.113	20.415	23.04
gs	0.155	0.421	6.174 × 10−4	3.1206 × 10−3	16.52
gs-co2	0.0966	0.263
gm	1.22	2.71	4.224 × 10−2	6.66 × 10−2	38.81
gm/gs-co2	0.410	1.21	0	0.5102	0
Ci-Cc	90.2	144	18.33	97.64	15.81
AN/gs	55.1	109	0	170.4	0
Jcal	135	219	127.2	283.4	31.00
LT	0.163	0.285	1.025 × 10−4	6.704 × 10−4	13.26
LD	0.0771	0.181	1.035 × 10−4	5.356 × 10−4	16.19
LMA	20.1	39.1	1.113 × 10−16	27.14	0
LDMC	0.163	0.241	4.402 × 10−5	2.963 × 10−4	12.93