Growth Responses and Photosynthetic Indices of Bamboo Plant (Indocalamus latifolius) under Heavy Metal Stress

Table 2

Photosynthetic indices of Indocalamus latifolius as affected by HMs stress.

HM treatment		Photosynthetic indices
		Pn; (μmol CO2 m^−2 s^−1)	Cond; (mol H2O m^−2 s^−1)	Ci; (μmol CO2 mol^−1)	Tr; (mmol H2Om^−2 s^−1)
Cu; (mg kg^−1)	0	70.2 ±1.4	0.05± 0.02	17.67±6.01	1.3±0.48
	500	75.2 ±5.2	0.06± 0.04	21.11± 4.5	1.7±0.47
	1000	63.4 ±2.5	0.03 ± 0.007	11.02 ± 3.9	1.1± 0.20
	2000	53.08 ±1.1	0.02 ±0.01	10.81± 4.5	0.9± 0.41
Pb (mg kg^−1)	0	73.6±3.06	0.14± 0.04	35.93± 5.8	2.7± 0.13
	500	65.6± 1.4	0.07 ± 0.04	19.51± 6.1	1.3± 0.25
	1000	57.4± 1.6	0.04± 0.01	26.31± 6.45	0.9± 0.25
	2000	48.7 ±1.2	0.02± 0.01	21.25± 6.6	0.8± 0.42
Zn; (mg kg^−1)	0	64.08 ±1.1	0.07± 0.05	16.73 ± 3.4	1.2 ± 0.45
	500	69.4 ± 4.2	0.07± 0.04	20.10 ± 6.1	1.4± 0.264
	1000	58.7 ±1.9	0.05± 0.04	16.14± 8.1	0.9± 0.20
	2000	50.6 ±2.08	0.03± 0.01	11.45± 2.5	0.7± 0.38