Publicação: Photosynthesis induction in Eucalyptus urograndis seedlings and cuttings measured by Open Photoacoustics
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2001-01-01
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Japan Soc Analytical Chemistry
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In this work we study the photosynthetic induction in Eucalyptus urograndis leaves using the Open Photoacoustic Cell Technique. In vivo and in situ measurements were performed in leaves of four months-old E. urograndis seedlings and C041 cuttings previously dark-adapted for at least 10 h. Experimental results for the gas exchange component of the photoacoustic (PA) signal are interpreted considering that a gas uptake component would have a phase angle nearly opposite to that of the oxygen evolution component. Analysis of the photosynthetic induction data shows that seedlings present a net oxygen evolution before cuttings, but cuttings reach a higher steady-state photosynthetic activity.
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Analytical Sciences. Tokyo: Japan Soc Analytical Chemistry, v. 17, p. S555-S558, 2001.
