SciELO - Scientific Electronic Library Online

 
vol.31 issue3Polyphenolic cells and their interrelation with cotyledon cells in seven species of Theobroma (Sterculiaceae)Leaf morphology variation of Miconia sellowiana (DC.) Naudin (Melastomataceae) in distinct vegetation types at the state of Paraná author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

Share


Brazilian Journal of Botany

Print version ISSN 0100-8404On-line version ISSN 1806-9959

Abstract

SAMPAIO, Maurício Bonesso  and  SCARIOT, Aldicir. Growth and reproduction of the understory palm Geonoma schottiana Mart. in the gallery forest in Central Brazil. Rev. bras. Bot. [online]. 2008, vol.31, n.3, pp.433-442. ISSN 0100-8404.  https://doi.org/10.1590/S0100-84042008000300007.

To understand the growth and reproduction of the palm Geonoma schottiana in the gallery forest of Central Brazil, two hypotheses were raised: (i) production of leaves and reproductive structures are concentrated in the period of the year with high light availability; (ii) leaf production and reproductive activity are related to plant length. However, it is expected that senility effects will cause fast reduction in growth and reproduction activities in higher plants. Growth and reproduction were concentrated in the dry season, when insolation is higher than in the wet season, suggesting that leaf and inflorescence production on G. schottiana in the gallery forest understory is more limited by light than by soil humidity. As the individual grows, leaf number and blade area increase, but reproduction activity is independent of plant length. Resources stored in the stem are important to growth, but exogenous factors, as canopy openness, should be more important to reproduction. Plant senescence seems to have a lesser effect on the production of vegetative and reproductive structures in G. schottiana than has been detected in congeneric species with greater clonal activity.

Keywords : life stage; reproductive and vegetative phenology; seasonality; senescence.

        · abstract in Portuguese     · text in English     · English ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License