Table 2.

Multi‐year seasonal allometric regression equations for six above‐ground components of a vine shoot

Variable	a	b	c	d	k	R 2	s.e.	n
Primary stem mass (g)	1·799	0·998	0·565	‐	–2·145	0·965	0·100	218
Lateral stem mass	5·436	0·696	0·992	‐	–3·179	0·793	0·327	142
Primary leaf mass	1·091	0·400	0·298	0·739	–1·206	0·949	0·079	218
Lateral leaf mass	4·380	0·682	1·266	‐	–3·661	0·819	0·279	153
Grape mass*	2·156	‐	2·846	–0·293	–8·428	0·924	0·244	251
Total leaf area (dm2)	1·289	0·666	0495	‐	–1·032	0·932	0·104	128

a, b, c, d and k represent regression parameters of the equation log W = log k + a log D_m + b log L + c log S + d log n_pl, where D_m, L, S and n_pl are primary stem diameter at mid‐length (cm), main stem length (cm), cumulative degree‐days (using a base temperature of 10 °C) and number of primary leaves per shoot, respectively. R² is the adjusted correlation coefficient, s.e. is the standard error of the variable estimate and n is the number of samples. All regression equations were highly significant at P < 0·01 level. * Note that for grapes, a and d represent regression parameters of the grape peduncle diameter (D_p, mm) and the number of grapes per shoot (n_g), respectively.