Table 1.

Cd contents, concentrations and isotope compositions of leaves, roots and calculated total plants for 19 cacao genotypes grown in hydroponic solution with 20 µmol L⁻¹ CdCl₂ (and δ^114/110Cd = −0.36 ± 0.04)

Cacao clones	Leaves				Roots				Total plant			Isotope fractionation
	f	[Cd] (µg g−1)	δ114/110Cd (‰)	2 s.d. (‰)	f	[Cd] (µg g−1)	δ114/110Cd (‰)	2 s.d. (‰)	Cd (μg)	[Cd] (µg g−1)	δ114/110Cd (‰)	Δ114/110${\mathrm{Cd}}_{\mathrm{t}-{\mathrm{s}}^{\mathrm{b}}}$ (‰)	Δ114/110${\mathrm{Cd}}_{1-{\mathrm{t}}^{\mathrm{c}}}$ (‰)
B 5/7 [POU]	0.40	142	−0.46	0.06	0.22	475	−0.82	0.03	198	222	−0.61	−0.25	0.15
Catie 1000	0.47	361	−0.48	0.06	0.30	551	−0.73	0.05	235	426	−0.58	−0.22	0.10
CC 41 (1)	0.65	266	−0.58	0.06	0.09	163	−0.73	0.05	189	238	−0.61	−0.25	0.03
CC 41 (2)	0.74	291	−0.65	0.06	0.09	195	−0.71	0.05	271	270	−0.61	−0.25	−0.04
CL 19/10	0.49	112	−0.51	0.07	0.24	478	−0.75	0.02	313	173	−0.60	−0.24	0.09
GU 207/H	0.53	182	−0.53	0.06	0.32	300	−0.72	0.06	86.3	217	−0.61	−0.25	0.08
GU 263/V	0.57	403	−0.64	0.10	0.27	433	−0.82	0.07	233	413	−0.70	−0.34	0.06
IMC 27	0.27	139	−0.35	0.09	0.43	501	−0.72	0.04	155	267	−0.57	−0.21	0.21
LP 1/41 [POU]	0.36	171	−0.50	0.04	0.25	757	−0.68	0.04	305	306	−0.58	−0.22	0.08
Matina 1–7a	0.04	3.38	−0.20	0.08	0.49	207	−0.68	0.09	113	52	−0.55	−0.19	0.35
NA702	0.38	78.2	−0.51	0.07	0.30	368	−0.64	0.07	241	140	−0.57	−0.21	0.06
PNG 340	0.20	29.7	−0.13	0.07	0.32	220	−0.53	0.07	142	83.8	−0.35	0.01	0.22
POUND 12/A [POU]	0.60	338	−0.46	0.05	0.20	497	−0.74	0.13	296	376	−0.54	−0.18	0.08
RB 46	0.36	199	−0.50	0.04	0.39	825	−0.68	0.04	284	361	−0.59	−0.23	0.09
RIM 189 [MEX]	0.19	30.4	0.02	0.10	0.50	348	−0.68	0.06	207	107	−0.44	−0.08	0.46
SCA 9	0.31	68	−0.40	0.05	0.31	375	−0.62	0.03	150	142	−0.51	−0.15	0.11
SPA 9 [COL]	0.62	300	−0.57	0.05	0.14	275	−0.76	0.04	258	293	−0.62	−0.26	0.05
TARS 31	0.44	355	−0.44	0.04	0.37	565	−0.71	0.04	431	433	−0.57	−0.21	0.13
TSA 654	0.57	298	−0.67	0.05	0.23	541	−0.76	0.04	323	356	−0.70	−0.34	0.03
U 70 [PER]	0.61	493	−0.60	0.05	0.18	519	−0.85	0.05	200	500	−0.67	−0.31	0.07
Min/max	0.04/0.74	3.4/493	−0.67/0.02		0.09/0.50	163/825	−0.85/−0.53		86/431	52/500	−0.70/−0.35	−0.34/0.01	−0.04/0.46
Mean	0.44	213	−0.46		0.28	430	−0.72		231	269	−0.58	−0.22	0.12
s.d.	0.17	136	0.17		0.11	174	0.07		80	125	0.08	0.08	0.11

Also shown are the isotope fractionations between total plants and growth solution (Δ^114/110Cd_tot-sol) as well as leaves and total plants (Δ^114/110Cd_leaf-tot). CC 41 (1) and (2) are two separate plants of the same clone.

f mass fraction of Cd in leaves or roots relative to the Cd inventory of the total plant, s.d. standard deviation.

^aMean data from analyses of two separate samples from the same Matina 1–7 plant (see Supplementary Table S1 for individual results), ^btot-sol, ^cleaf-tot