. 2018 May 7;25(20):19739–19752. doi: 10.1007/s11356-018-2197-6

Table 2.

Shoot multiplication rate, average shoot height, rooting efficiency, and dry weight content of kidney vetch depending on Pb concentration in the medium after 4 and 8 weeks of culture

Parameter^a		Period	Pb [mM]
Parameter^a		Period	0.0	0.5	1.0	1.5
Shoot multiplication rate ± SD		4 weeks	3.5 ± 1.1^ab*	4.3 ± 1.5^a	3.9 ± 1.8^a	2.7 ± 0.8^b
Shoot multiplication rate ± SD		8 weeks	6.5 ± 2.5^ab	7.0 ± 2.0^a	5.3 ± 2.0^b	4.0 ± 1.4^c
Average shoot height (cm) ± SD		4 weeks	5.0 ± 1.1^a	5.1 ± 0.7^a	5.3 ± 1.0^a	4.7 ± 0.6^a
Average shoot height (cm) ± SD		8 weeks	6.0 ± 1.3^a	5.7 ± 1.3^a	5.9 ± 1.3^a	5.3 ± 1.0^a
Rooting efficiency	Rooting (%) ± SD	4 weeks	60.0 ± 16.3^a	80.0 ± 16.3^a	60.0 ± 28.3^a	75.0 ± 19.1^a
	Rooting (%) ± SD	8 weeks	85.0 ± 19.1^a	75.0 ± 19.1^a	80.0 ± 16.3^a	75.0 ± 30.0^a
	Average root number/explants ± SD	4 weeks	9.2 ± 4.8^a	6.6 ± 4.6^a	8.0 ± 5.2^a	6.0 ± 5.1^a
	Average root number/explants ± SD	8 weeks	9.8 ± 5.8^ab	9.9 ± 4.3^ab	11.6 ± 4.6^a	6.7 ± 4.0^b
	Average root length (cm) ± SD	4 weeks	4.0 ± 0.9^a	3.9 ± 1.7^a	3.6 ± 1.3^ab	2.6 ± 1.2^b
	Average root length (cm) ± SD	8 weeks	7.3 ± 3.6^b	10.7 ± 3.6^a	8.9 ± 3.1^ab	8.6 ± 3.1^ab
Percentage of dry weight content (%) ± SD	Shoot	4 weeks	10.4 ± 1.1^a	11.6 ± 1.8^a	10.9 ± 0.6^a	10.8 ± 1.1^a
	Shoot	8 weeks	8.4 ± 0.7^b	7.9 ± 0.4^b	8.4 ± 0.7^b	10.4 ± 0.8^a
	Root	4 weeks	7.4 ± 0.5^b	9.5 ± 1.1^a	8.6 ± 1.1^a	9.7 ± 0.5^a
	Root	8 weeks	8.9 ± 1.5^b	9.4 ± 0.5^b	9.5 ± 1.2^b	12.3 ± 1.0^a

^an = 20; rooting percentage n = 4; dry weight content n = 5

*Different letters—statistically significant difference within each period and organ at p ≤ 0.05