Geraldo Rogério Faustini Cuzzuol

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BACKGROUND AND AIMS Erythrina speciosa is a Neotropical tree that grows mainly in moist habitats. To characterize the physiological, morphological and growth responses to soil water saturation, young plants of E. speciosa were subjected experimentally to soil flooding. METHODS Flooding was imposed from 2 to 4 cm above the soil surface in water-filled(More)
(Fructan production in Vernonia herbacea (Vell.) Rusby is related to adequate nitrogen supply and period of cultivation). Previous studies showed that plants of Vernonia herbacea grown for one year under a limited nitrogen supply presented reduced growth and higher fructan content than plants treated with sufficient nitrogen supply. However, the total(More)
For this work we hypothesize the existence of proportional increase in the thickness of the mesophyll cells and dimensions of the fiber cells of stem and the content of the cell wall polymers (cellulose, hemicelluloses and lignin) with the ontogeny of brazilwood. We also postulate that the capacity of this heliophile in inhabit lower stratum of forest(More)
Contradicting the notion that non-pioneer tree species are less tolerant to high irradiance due to their lower plasticity, some non-pioneer tropical species have shown high capacities to adjust to full sun. This ability has been attributed to the greater plasticity related to photosynthesis variables rather than morphological variables. To test this(More)
Salinity and fertility are the main factors cited in Within the restinga (coastal woodland) biome in Brazil, the positioning of Canavalia rosea and Passiflora mucronata occur, respectively, near the shore—in the creeping psammophyte formation (CPF) and far from the shore in the Palmae formation (PF). The hypothesis that such positioning is related to(More)
This study was carried out to evaluate the effect of N, P, and K on the growth of Caesalpinia echinata plants and on the anatomical and chemical characteristics of their stems. Eight-month-old plants were grown in polyethylene pots of 8 L containing soil. The pots were arranged in randomized blocks where they received N, P, and K in isolated form, and NPK(More)
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