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Table 1 Percentage variation in stomatal conductance (gs-sat) and photosynthesis (Asat), explained by the addition of each of the variables assessed for the field VPD and Variable VPD datasets

From: Effect of vapour pressure deficit on gas exchange of field-grown cotton

 

Field VPD, variation account /%

Variable VPD, variation account /%

 

gs-sat

Asat

gs-sat

Asat

VPDL

39.5

28.9

32.3

16.8

Plant

4.8

0

4.3

0

ASH

0

17.1

1.6

6.7

VPDL × Plant

0

0

2.5

2.9

VPDL × ASH

0

0

0

0

Plant × ASH

0

0

3.1

0

VPDL × plant × ASH

0

0

0

0

Total variation

44.3

46.0

43.8

26.4

  1. VPDL refers to vapour pressure deficit of the leaf, plant refers to the individual plant measured, and ASH refers to accumulated stress hours