Table 1.

Parameter values and initial conditions of the flow and storage model for two levels of two plants: level 1, below the canopy; level 2, within the canopy (four leaves higher)

	Plant 1		Plant 2
Parameter	Level 1	Level 2	Level 1	Level 2
Dstem(0) (mm)	12·67	17·07	14·81	13·90
Dfruit(0) (mm)	42·61		41·23
kphloem (h−1)	8·6 × 10−3
ɛ0 (m−1)	787	1231	1043	1016
φphloem(0) (MPa−1 h−1)	56·86 × 10−5	123·90 × 10−5	6·40 × 10−5	237·50 × 10−5
Rxylem (MPa h g−1)	0·003	0·004	0·003	0·004
L (m)	2·1
b (dimensionless)	0·9
r (MPa h g−1)	0·1
Γphloem (MPa)	0·3
Ψtotmedium (MPa)	–0·1
Cphloem(0) (g g−1)	0·08873
kfruit (h−1)	0·0035

D_stem(0): initial stem diameter; D_fruit(0): initial fruit diameter; k_phloem: parameter describing time dependency of phloem cell-wall extensibility; ɛ₀: proportionality constant for the bulk elastic modulus; φ_phloem(0): parameter describing the time dependency of the cell-wall extensibility; R_xylem: hydraulic resistance in the xylem; L: length of the considered stem compartment; b: proportion of inelastic tissue; r: radial hydraulic resistance between the xylem and the phloem tissue; Γ_phloem: threshold hydrostatic potential at which wall yielding occurs; Ψ^tot_medium: water potential in the rooting medium; C_phloem(0): sucrose concentration at the start of the simulation; k_fruit: parameter describing the time dependency of fruit cell-wall extensibility. D_stem(0) and D_fruit(0) and parameter values L and b were defined based on measurements; R^x, r, Γ_phloem and Ψ^tot_medium were adopted from earlier studies (De Swaef and Steppe, 2010; De Swaef, 2011) whereas the other parameters were estimated via automatic calibration.