Leaf conductance was measured using a steady state porometer
(LI-1600; LI-COR Inc., USA), and these measurements were used
as an index for the gas exchange ability of leaves. Measurements
were taken at 9:00–18:00 h on August 6, 24 and 25 in 2010. Photosynthetic
photon flux densities (PPFDs) were also monitored at the
same time, which is an important environmental factor affecting
the leaf conductance positively in general. In a preliminary experiment,
we found that the leaf conductance measured on the abaxial
or adaxial leaf surface was significantly related to that of the whole
leaf, being 62% and 38% of the whole leaf, respectively. Thus the conductance
of the whole leaf surface could be accurately estimated
using measurements of conductance of the abaxial leaf surface. Leaf
conductance was, therefore, measured on the abaxial leaf surfaces
of leaves.
Leaf conductance was measured using a steady state porometer(LI-1600; LI-COR Inc., USA), and these measurements were usedas an index for the gas exchange ability of leaves. Measurementswere taken at 9:00–18:00 h on August 6, 24 and 25 in 2010. Photosyntheticphoton flux densities (PPFDs) were also monitored at thesame time, which is an important environmental factor affectingthe leaf conductance positively in general. In a preliminary experiment,we found that the leaf conductance measured on the abaxialor adaxial leaf surface was significantly related to that of the wholeleaf, being 62% and 38% of the whole leaf, respectively. Thus the conductanceof the whole leaf surface could be accurately estimatedusing measurements of conductance of the abaxial leaf surface. Leafconductance was, therefore, measured on the abaxial leaf surfacesof leaves.
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