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Table 1 The values of the non-time varying parameters

From: A rate equation model of stomatal responses to vapour pressure deficit and drought

Parameter

Range

Symbol

References

Xylem water potential

0 to -2.0 MPa

ΨX

[5, 6, 44]

Subsidiary cell to guard cell water potential difference

-0.1 to -0.05 MPa

ΔΨSG(t)

[45]

Maximum Guard Cell Volume

4.3 × 10-16 m3

Vmax

[46]

Maximum Stomatal Aperture

5 × 10-6m

Stommax

[28, 46]

Stomata Density

250 × 106 /m2

σS

[38, 46]

Subsidiary cell : Guard Cell Contact Surface Area

2.4 × 10-10m2

ASG

[40]

Fraction of total leaf volume that is air

50%

fv

[40]

Leaf Thickness

1 × 10-3m

Leafthick

Eamus unpbl.

% Mesophyll Cell surface in contact with air

50%

fc

[40]

Maximum membrane hydraulic conductivity

5 × 10>-14m s-1 Pa-1

LP

[47]

Mesophyll cell wall thickness

3 × 10-6 m

ΔxMW

Eamus unpbl.

Depth of stomatal channel

5 × 10-6 m

ΔxGW

Eamus unpbl.

Wax Factor Out

2 × 104

WOUT

 

Wax Factor IN

5 × 103

WIN

 

Ratio of cuticular to stomatal transpiration when stomata are fully open

Ca 0.01

 

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