Table 1.

Measures of sieve tube hydrostatic pressures (MPa) using micromanometers glued to severed aphid stylets inserted into translocating sieve tubes, in specified plant organs and species.

Plant species	Organ	Hydrostatic pressure	References
Hordeum vulgare	Leaf	0.8–1.4	Gould et al., 2005
(Barley)	Root	1.62 ± 0.05	Gould et al., 2004a
Sonchus oleraceus	Leaf	1.0–1.5	Gould et al., 2005
(Sow thistle)	Stem	0.7–1.0	Gould et al., 2004b
Triticum aestivum	Peduncle	2.35 ± 0.56	Fisher and Cash-Clark, 2000b
(Wheat)	Grain	1.16 ± 0.26
Salix babylonica	Leaf	0.51–0.93	Wright and Fisher, 1980
(Willow)	Bark strip	0.47–1.2	Wright and Fisher, 1983