Table 1.

Growing parameters of Ceylon leadwort (P. zeylanica) plants depending on Pb concentration in the medium after 4 weeks of culture (different letters—statistically significant difference within each parameter at p ≤ 0.05).

Pb Concentration [g/l]	Parameters [±SD]
	Growth Index [%]	Shoot Dry Weight Content [%]	Rooting [%]	Root Length [cm]	Root Dry Weight Content [%]
0.0 (control)	69.0a ±12.2	11.1b ±1.1	92.0a ±9.8	6.3a ±1.6	12.7a ±1.7
0.05	73.5a ±10.3	11.2b ±0.9	96.0a ±8.9	5.0b ±1.0	13.3a ±1.2
0.1	71.8a ±13.9	12.4a ±0.9	74.3b ±19.0	4.3c ±1.3	12.2a ±1.3