Interaction of lead and cadmium on growth and leaf morphophysiological characteristics of European hackberry (Celtis australis) seedlings

Chemical and Biological Technologies in Agriculture

Table 1 Analysis of variance of plant growth traits

Source of variation	df	New shoot growth	Leaf SPAD value	Leaf area	No. of chlorotic leaves	No. of necrotic leaves	Leaf soluble sugars	Leaf proline	Leaf transpir. rate	Leaf water conduct.	Leaf photosyn. rate	Soil available Pb	Soil available Cd
Factor A (Pb)	2	767.5**	818.56**	132.64**	71.37**	30.04**	230032.4**	7.08*	0.33**	0.00034**	1.28**	38171**	0.72 ns
Factor B (Cd)	1	140.16*	73.85 ns	93.61**	22.04*	7.04*	183680.0**	11.9*	0.48**	0.00047**	0.26 ns	3.47 ns	4566.8**
A*B	2	88.29*	2.62 ns	8.56 ns	5.54 ns	1.79 ns	63489.4*	2.26 ns	0.13 ns	0.00011*	0.055 ns	131.6*	0.61 ns
Error	15	19.41	54.58	5.14	1.73	1.45	10157.8	1.43	0.051	0.000026	0.068	39.44	2.68
CV		17.22	11.63	14.56	33.9	49.02	14.68	23.3	22.7	31.5	19.1	15.9	20.0

**,* and ns mean significant effect at 1%, 5% and not significant effect, respectively