. 2020 Jul 8;20(7):846–863. doi: 10.1089/ast.2019.2056

Table 5.

Effect of Added Sodium to Growth Under a CO₂ Atmosphere

Growth condition	Experiment^a	Germination (%)	Lag^atime (days)	T₅₀^b
Regolith	1	0	—	—
	2	0	—	—
	3	0	—	—
Regolith+Na⁺	1	0	—	—
	2	0	—	—
	3	0	—	—
Regolith^c+CP-O₂^d	1	100	2	4.0
	2	100	2	4.0
	3	100	1	5.0
Regolith+CP-O₂+Na⁺	1	100	2	3.5
	2	100	2	3.0
	3	100	2	4.0
Regolith+CP^e	1	0	—	—
	2	0	—	—
	3	0	—	—
Regolith+CP+Na⁺	1	0	—	—
	2	0	—	—
	3	0	—	—

^{^a}

Twenty seeds were planted per experiment. Growth was monitored for 12 days.

^{^b}

Time to reach 50% germination.

^{^c}

JSC Mars-1A regolith simulant.

^{^d}

Oxygen-donating lightly cross-linked polyacrylate.

^{^e}

Lightly cross-linked polyacrylate.