Table 2.

Homeostasis model statistics and stoichiometric homeostasis coefficients (H) for N (H_N), P (H_P) and N : P ratio (H_NP)

Types	N		P		N : P ratio
	HN (L95 %; U95 %)	r2	HP (L95 %; U95 %)	r2	HNP (L95 %; U95 %)	r2
Stage 1
Leaf	5·62 (4·21; 8·43)	0·76	3·89 (2·76; 6·61)	0·68	5·04 (3·76; 7·64)	0·60
Stage 2
Leaf	3·42 (2·70; 4·69)	0·83	3·01 (2·61; 3·56)	0·94	2·57 (2·24; 3·01)	0·89
Stem	4·08 (3·02; 6·30)	0·74	4·58 (3·54; 6·51)	0·80	3·70 (3·03; 4·76)	0·78
Silique	9·30 (6·86; 14·50)	0·74	12·98 (8·90; 23·93)	0·63	13·90 (11·10; 18·55)	0·73
Stage 3
Leaf	2·33 (2·10; 2·68)	0·96	2·24 (1·66; 3·45)	0·74	1·36 (1·18; 1·61)	0·87
Stem	2·46 (2·05; 3·08)	0·90	1·94 (1·52; 2·68)	0·83	2·27 (1·82; 3·03)	0·73
Silique	5·22 (4·11; 7·18)	0·83	5·10 (3·67; 8·34)	0·70	5·02 (3·89; 7·06)	0·67

L95 % and U95 % indicate lower and upper 95 % confidence intervals of H, respectively. Statistical equations were all significant at P < 0·001.