Table 3.

Significance of different sources of variability [species (S), temperature (T) and their interaction effects] for the FePO₄-treated plants

	Source of variability
Variable	S	T	S × T	R2
Total dry weight	***	***	*	0·84
Leaf dry weight	***	**	NS	0·78
Stem dry weight	***	***	NS	0·77
Root dry weight	***	***	***	0·91
Root mass ratio	***	*	*	0·60
Root length	***	***	**	0·85
Root diameter	***	NS	*	0·75
Specific root length	**	NS	*	0·66
Root length to leaf area ratio	*	NS	**	0·59
Plant P concentration	**	NS	*	0·78
Total P (plant−1)	***	***	*	0·84
Carboxylate content	***	***	***	0·78
A	***	*	***	0·74
gs	**	***	*	0·47
WUE	***	***	***	0·75

NS, no significant difference; *P < 0·05; **P < 0·01; ***P < 0·001.

R² for the full model is given.