Aspects of the Ecological Anatomy of the Leaves of Hevea brasiliensis Muell. Arg.

The comparative anatomy and morphology of the lear of H. brasiliensis at different microclimates and habitats were studied. Leaves of different strata were compared, and comparisons were made with leaves of equivalent strata between plants growing in varzea and terra firme. The results show progress...

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Bibliographic Details
Published in:Acta amazonica 1980-01, Vol.10 (3), p.463-493
Main Authors: Medri, ME, Lleras, E
Format: Article
Language:Portuguese
Subjects:
Hevea brasiliensis
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Summary:The comparative anatomy and morphology of the lear of H. brasiliensis at different microclimates and habitats were studied. Leaves of different strata were compared, and comparisons were made with leaves of equivalent strata between plants growing in varzea and terra firme. The results show progressive xeromorphy with increase in height (as conditions become progressively more xeric) and more scleromorphy in leaves of comparable strata of terra firme than in varzea. The results thus agree with Zalenski's law and Lleras' interpretation of the same. The data here presented for H. brasiliensis suggest that this species shows more phenotypic plasticity than other species studied by the same authors. It is here suggested that based on comparisons of phenotypic plasticity within individuals of natural or clonal populations, it is possible, using the criteria here developed, to select genotypes that will show higher drought tolerance.
ISSN:0044-5967