Table 3.

Output of the simulation model for default simulation, simulations in which the parameters values were changed one-by-one and simulations with parameter values representing small- and large-fruited cultivars

Simulation	Changed parameter	Parameter value	Fruit set (no.)	Fruit set (%)	Variation in fruit set (CV)*	Fruit weight (g)†	Ratio actual/potential fruit weight
Default			71	71	0·65	4·21	0·53
Changing parameters one-by-one	Potential fruit weight	4	100	100	0·15	2·51	0·63
		18	41	41	0·99	7·88	0·44
	Source : sink threshold for fruit set	1	26	26	1·46	6·45	0·81
	Fruit-growth duration	57	71	71	0·57	4·19	0·52
		70	70	70	0·64	4·19	0·52
	Flower appearance rate	1	88	44	1·00	3·59	0·45
	Source strength	2·2	64	64	0·69	4·09	0·51
		2·6	79	79	0·50	4·26	0·53
	Vegetative sink strength	1·6	76	76	0·55	4·30	0·54
		2·9	52	52	0·89	3·83	0·48
Small-fruited cultivar‡			123	62	0·69	2·03	0·51
Large-fruited cultivar			21	21	1·84	12·20	0·68

Default simulation had 8 g dm as maximum fruit size, 0·5 as threshold for fruit set, fruit-growth duration of 60 d, flower appearance rate of 0·5 d⁻¹, source strength of 2·4 g dm d⁻¹ and vegetative sink strength of 1·9 g dm d⁻¹.

* CV is the coefficient of variation, representing the variation in weekly fruit set calculated as the s.d. of the weekly fruit set divided by the average weekly fruit set

^† Of the harvested fruits

^‡ For explanation, see Table 1.