. 2018 Jan 24;9:3. doi: 10.3389/fpls.2018.00003

Table 1.

Parameter values concerning carbon economy and sugar development in QualiTree estimated in the current study for cv. “Elberta” under Iranian semi-arid conditions.

Parameter	Definition (corresponding equation)	Unit	Value	Range
SPECIFIC PARAMETERS FOR CHANGES OF STOMATAL CONDUCTANCE (g_s) ACCORDING TO ENVIRONMENTAL AND PLANT CONDITIONS
gs_max	Maximum g_s	mol m⁻² s⁻¹	0.0796	–
a_vpd	Jarvis parameter expressing the effect of VPD on g_s	hPa⁻¹	0.158
b_vpd	Jarvis parameter expressing the effect of VPD on g_s	Dimensionless	8.06
a_temp	Jarvis parameter expressing the effect of temperature on g_s	°C⁻¹	0.23
b_temp	Jarvis parameter expressing the effect of temperature on g_s	Dimensionless	22.5
a_psi	Jarvis parameter expressing the effect of PSI on g_s	MPa⁻¹	−8.467
b_psi	Jarvis parameter expressing the effect of PSI on g_s	Dimensionless	13.129
a_par	Jarvis parameter expressing the effect of PAR on g_s		0.005
GLOBAL PARAMETERS
Δpsi_max	Maximum difference between stem and leaf water potential	MPa	0.447	–
SPECIFIC PARAMETERS FOR LEAFY SHOOTS
dd_min	Minimum degree-day value	Degree-day	0	0–600
dd_max	Maximum degree day value	Degree-day	2,500	785–2,800
$R G R_{l s}^{i n i}$	Leafy shoot initial relative growth rate	Degree-day⁻¹	0.00036	0.001–0.01844
$D M_{l s}^{m a x}$	Potential dry mass of leafy shoot	g	4.65	6.5–66
SLA	Specific leaf area	m² g⁻¹	0.0158	0.014–0.016
SPECIFIC PARAMETERS FOR WATERSPROUTS
dd₀	Emergence of watersprouts	Degree-day	950	–
dd_min	Minimum degree-day value	Degree-day	2,400
dd_max	Maximum degree day value	Degree-day	2,800
$R G R_{w s}^{i n i}$	Water sprout initial relative growth rate	Degree-day⁻¹	0.0059
$D M_{w s}^{m a x}$	Potential dry mass of watersprouts	g	11.1
SPECIFIC PARAMETERS FOR FRUITS
dd_min	Minimum degree-day value	Degree-day	2,600	295.48–839
dd_max	Maximum degree day value	Degree-day	2,800	986.93–3,500
$R G R_{f}^{i n i}$	Fruit initial relative growth rate	Degree-day⁻¹	0.0025	0.001439–0.0107
$D M_{f}^{m a x}$	Potential dry mass of fruits at maturity	g	35	32.5–59.22
fleshDmc	Flesh dry matter content	Dimensionless	0.195	0.09–0.16
fs_sat	Saturation value for assimilate distribution between stone and flesh	g	3.87	5.8
fs_slope	Initial slope for assimilate distribution between stone and flesh	g⁻¹	0.2164	0.1
PARTITIONING OF CARBON FLOW FROM THE PHLOEM INTO SUGARS
k₁	Proportion of carbon as sucrose in the phloem sap	Dimensionless	0.3573	0.35–0.48
K₃	Relative rate of sorbitol transformation to fructose	Day⁻¹	0.0536	0.04–0.6
K₅	Relative rate of sorbitol transformation to glucose	Day⁻¹	0.0598	0.13–0.44
K_2,1	Relative rate of decrease of k_2(t)	Day⁻¹	0.0879	0.05–0.13
K_2,2	Time at which k_2(t) = 1 day⁻¹	Day	74.0405	57–80
K_4,1	Ratio of the relative rate of glucose and fructose transformation to the relative growth rate	Dimensionless	2.3380	2.2–4.5
WATER STRESS EFFECTS ON VEGETATIVE GROWTH
Ψ_min		MPa	−1.949	–
Ψ_max		MPa	−1.378
WATER STRESS EFFECTS ON PHOTOSYNTHESIS
A_h		MPa⁻¹	0.3647	0.22
B_h		MPa	6.3667	4.43

Ranges of values for these parameters found in the literature are also shown. Ranges for the different parameters were taken from Harrison et al. (1989), Lescourret and Génard (2005), Mirás-Avalos et al. (2011, 2013a,b), and Wu et al. (2012).