Table 2.

Sensitivity of model outputs to changes in parameter valuesEach value for fresh weight (FW, g), dry weight (DW, g), percentage of dry matter (DM%), soluble solids percentage (SS%), and starch as a percentage of dry weight (ST%) is the average change induced by changing the parameter value by plus or minus the stated amount. Particularly large changes (FW > 16g, DW > 1g, and DM%, SS%, and ST% > 2%) are shown in bold.

Parameter group	ID	Base value	Change (%)	Change on day 170
				FW	DW	DM%	SS%	ST%
Initial values	w 0	3.2	20	11	0.2	−1.3	−0.6	−0.7
	s 0	0.5	20	12	0.5	−1.3	−0.6	−0.5
	P f0	2	100	0	0.0	0.0	0.0	0.0
Other solutes	π pO	12.53	20	13	0.3	−1.6	−0.8	−0.9
	π fO	6.5	20	164	2.8	−14.3	−7.6	−9.4
Cell expansion	Y	0.08	25	−7	−0.1	0.0	0.0	0.2
	d 1	15	20	37	0.6	−4.7	−2.4	−2.5
	d 2	60	20	181	2.9	−16.8	−9.3	−10.4
	φ 1	0.2	20	18	0.3	−2.3	−1.1	−1.2
	φ 2	0.000135	20	24	0.4	−3.0	−1.5	−1.6
	φ k	0.028	20	−12	−0.2	1.4	0.7	0.7
	ε	153	20	−45	−0.7	4.9	2.5	2.9
Active uptake	K m	0.08	20	−8	−0.5	0.7	0.3	0.2
	ν1	0.005	20	19	1.2	−1.6	−0.7	−0.4
	Q 10,ν	2	50	−11	−0.4	1.1	0.6	0.5
Membrane properties	σ p	0.9	5	−32	−0.8	3.6	1.8	1.8
	a x	0.066	20	21	0.3	−2.6	−1.3	−1.4
	a p	0.066	20	36	0.8	−4.3	−2.2	−2.2
	p s	0.003	50	5	0.3	−0.5	−0.2	−0.1
Skin permeance	ρ 0	800	20	−46	−0.6	5.3	2.7	3.3
	k ρ	0.035	20	16	−0.1	−2.3	−1.2	−1.4
	t ρ	18	22	−23	−0.2	2.9	1.4	1.7
	ρ ∞	25	20	−1	0.0	0.2	0.1	0.1
Pedicel conductance	t 1*	30	20	−52	−0.8	6.8	3.5	3.5
	t 2*	70	20	−1	0.5	0.6	0.3	0.6
		0.09	20	25	0.7	−2.9	−1.4	−1.5
		0.1	20	−19	−0.3	2.3	1.2	1.3
		0.036	20	0	−0.3	−0.3	−0.2	−0.3
		0.02	20	0	0.3	0.3	0.2	0.2
		0.016	20	16	3.0	0.3	0.4	1.5
		0.1	20	−5	−0.2	0.6	0.3	0.2
Starch sub-model	u 0	0.01	20	0	0.0	0.0	0.0	0.0
	A o	0.56	20	−10	−0.2	1.1	0.1	−1.6
	k o	0.038	20	1	0.0	−0.2	0.3	1.7
	s b	3.8	20	54	0.9	−5.7	−2.5	−5.6
	k s1	0.5	20	−2	0.0	0.2	−0.1	1.4
	t r	165	6	−2	0.0	0.2	−2.2	13.4
	t h	25	20	0	0.0	0.0	0.2	−1.2
	k u	0.055	20	1	0.0	−0.2	0.5	−3.5