Leaf characteristics and optical properties of different woody species |
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Authors: | E Baldini Osvaldo Facini Fabrizio Nerozzi Federica Rossi Annalisa Rotondi |
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Institution: | (1) Dipartimento di Colture Arboree, Università di Bologna, Via F. Re 6, I-40126 Bologna, Italy, IT;(2) Istituto di Ecofisiologia delle Piante Arboree da Frutto, Consiglio Nazionale delle Ricerche, Via P. Gobetti 101, I-40129 Bologna, Italy, IT |
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Abstract: | Light partition has been examined and evaluated on five woody species (Olea europaea, Ficus carica, Pittosporum tobira, Hedera helix maculata, Persica vulgaris) in relation to their leaf morpho-histological characteristics, water and chlorophyll contents. Leaf parameters and optical
properties (reflectance, transmittance, absorbance) in PAR, FR and NIR wavebands (400–1100 nm) were preliminarily submitted
to a canonical correlation analysis where lamina thickness and water content showed a leading role in determining all the
optical properties, while chlorophyll, influential in the PAR region, was remarkably effective only in an extreme pigment
situation when green and albino patches of ivy leaves were compared. Transmittance appeared inversely related to lamina thickness
in accordance with the Lambert Beer law. Significant correlations were found also between mesophyll water content and both
transmittance (positive) and reflectance (negative). Olive leaves showed peculiar optical patterns because of the dense and
continuous trichome layer on their abaxial surface.
Received: 3 January 1997 / Accepted: 5 May 1997 |
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Keywords: | Chlorophyll Leaf morpho-histology Optical properties Water content |
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