Table I. Biomass (g) and starch, fatty acids, and proteins contents (% of dry weight) of leaves, culm, roots, prop roots, and grains of sorghum ‘BRS 330’ at ambient and elevated CO₂ at 90 and 120 DAP.

Values are means ± sd of biological replicates. n = 3. Boldface values indicate significant statistical differences between treatments (P < 0.05). n.d., Not detected.

Organ	DAP	Biomass		Starch		Fatty Acids		Proteins
		Ambient CO2	Elevated CO2	Ambient CO2	Elevated CO2	Ambient CO2	Elevated CO2	Ambient CO2	Elevated CO2
Leaves	90	23.54 ± 6.84	32.63 ± 5.4	n.d.	n.d.	1.49 ± 0.09	1.42 ± 0.04	14.4 ± 1.23	16.8 ± 0.45
	120	17.75 ± 2.04	26.19 ± 3.8	n.d.	n.d.	1.09 ± 0.07	1.23 ± 0.05	16.3 ± 2.01	19.1 ± 2.70
Culm	90	13.25 ± 4.51	15.49 ± 2.96	n.d.	n.d.	0.29 ± 0.02	0.30 ± 0.03	2.2 ± 0.26	1.9 ± 0.08
	120	13.69 ± 4.79	10.80 ± 1.96	n.d.	n.d.	0.22 ± 0.02	0.24 ± 0.00	2.0 ± 0.32	1.9 ± 0.32
Roots	90	10.74 ± 3.54	9.17 ± 2.03	n.d.	n.d.	0.29 ± 0.02	0.29 ± 0.01	3.9 ± 0.15	3.4 ± 0.22
	120	10.41 ± 4.34	14.25 ± 7.79	n.d.	n.d.	0.21 ± 0.00	0.21 ± 0.00	3.2 ± 0.15	3.6 ± 0.42
Prop roots	90	5.46 ± 1.78	10.48 ± 1.2	n.d.	n.d.	0.21 ± 0.01	0.19 ± 0.02	4.1 ± 0.69	3.1 ± 0.16
	120	2.76 ± 0.16	3.5 ± 0.72	n.d.	n.d.	0.18 ± 0.01	0.17 ± 0.01	2.5 ± 0.12	2.3 ± 0.28
Grains	90	34.74 ± 3.14	30.08 ± 7.51	57.4 ± 4.51	51.6 ± 6.06	1.91 ± 0.14	1.32 ± 0.11	7.5 ± 0.53	10.1 ± 0.70
	120	61.95 ± 16.92	46.91 ± 13.56	59.9 ± 1.15	57.3 ± 2.43	2.09 ± 0.03	2.10 ± 0.13	5.1 ± 0.10	8.1 ± 0.68