Growth analysis of the everbearing strawberry ‘Delizzimo’ under controlled temperature and photoperiod conditions

Table 1 Relative growth rate (RGR), net assimilation rate (NAR), leaf area ratio (LAR) and relative leaf area growth rate (RLAGR) of ‘Delizzimo’ strawberry plants as affected by photoperiod and temperature during a 39-day growth period

Temperature (°C)	Period (days)	Photoperiod (h)	RGR (g/g/day)	NAR (mg/cm²/day)	LAR (cm²/mg)	RLAGR (cm²/cm²/day)
12	0–13	10	0.073	0.488	0.149	0.035
	0–13	20	0.087	0.483	0.180	0.076
	0–26	10	0.062	0.509	0.121	0.031
	0–26	20	0.074	0.607	0.123	0.046
	0–39	10	0.054	0.495	0.109	0.031
	0–39	20	0.066	0.572	0.115	0.046
19	0–13	10	0.102	0.780	0.132	0.050
	0–13	20	0.094	0.496	0.190	0.090
	0–26	10	0.085	0.604	0.142	0.067
	0–26	20	0.093	0.648	0.143	0.075
	0–39	10	0.079	0.643	0.122	0.062
	0–39	20	0.081	0. 662	0.123	0.065
26	0–13	10	0.102	0.625	0.165	0.080
	0–13	20	0.096	0.527	0.182	0.087
	0–26	10	0.092	0.569	0.162	0.082
	0–26	20	0.091	0.582	0.157	0.079
	0–39	10	0.078	0.574	0.137	0.066
	0–39	20	0.086	0.702	0.123	0.069
Probability level of significance (ANOVA)*
Source of variation
Temperature (A)			0.001	0.013	0.004	< 0.001
Photoperiod (B)			n.s	n.s	0.028	< 0.001
Growth period (C)			< 0.001	n.s	< 0.001	< 0.001
A x B			< 0.001	0.001	0.005	< 0.001
A x C			n.s	n.s	0.002	0.002
B x C			0.019	< 0.001	< 0.001	< 0.001
A x B x C			0.040	0.011	0.004	0.002

*The data are the means of three replicates, each with 10, 8, 6 and 5 plants at 0, 13, 26 and 39 days, respectively.
n.s not significant

ISSN: 2662-4044