Ontogeny, allometry and architecture of Psychotria tenuinervis (Rubiaceae)
We evaluated the ontogeny of the understory shrub Psychotria tenuinervis Müll.Arg., considering morphological and morphometric characters. Four ontogenetic stages were identified: seedling, juvenile, immature and adult (vegetative and reproductive phases). Size measurements and allometric relationsh...
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Sociedade Botânica do Brasil
2013-12-01
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doaj-e1f891b5ddd443769be111b7d181b3ee2020-11-25T00:47:41ZengSociedade Botânica do BrasilActa Botânica Brasílica1677-941X2013-12-0127473073610.1590/S0102-33062013000400012S0102-33062013000400012Ontogeny, allometry and architecture of Psychotria tenuinervis (Rubiaceae)Vanessa Rosseto0Magda Silva Carneiro1Flavio Nunes Ramos2Flavio Antonio Maës dos Santos3Universidade Estadual de CampinasUniversidade Federal de AlfenasUniversidade Federal de AlfenasUniversidade Estadual de CampinasWe evaluated the ontogeny of the understory shrub Psychotria tenuinervis Müll.Arg., considering morphological and morphometric characters. Four ontogenetic stages were identified: seedling, juvenile, immature and adult (vegetative and reproductive phases). Size measurements and allometric relationships of the stem and crown were compared between the immature and adult stages. Diameter and total height of the stem, as well as crown depth and width, increased throughout the ontogenetic stages and differed among immature, vegetative adult and reproductive adult individuals. The number of branches was lower in immature individuals than in vegetative and reproductive adult individuals but did not differ between the last two. The bifurcation ratio did not vary during ontogenetic development. In general, allometric relationships between the stem and the crown were similar among the ontogenetic stages. Although there was a progressive increase in size during ontogenetic development, there was no change in the allometric relationships between the size variables and architecture of P. tenuinervis, indicating that the form of individuals does not change over the course of ontogeny.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400012&lng=en&tlng=enallometryarchitecturebranching patternontogenetic stagesunderstory |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Vanessa Rosseto Magda Silva Carneiro Flavio Nunes Ramos Flavio Antonio Maës dos Santos |
spellingShingle |
Vanessa Rosseto Magda Silva Carneiro Flavio Nunes Ramos Flavio Antonio Maës dos Santos Ontogeny, allometry and architecture of Psychotria tenuinervis (Rubiaceae) Acta Botânica Brasílica allometry architecture branching pattern ontogenetic stages understory |
author_facet |
Vanessa Rosseto Magda Silva Carneiro Flavio Nunes Ramos Flavio Antonio Maës dos Santos |
author_sort |
Vanessa Rosseto |
title |
Ontogeny, allometry and architecture of Psychotria tenuinervis (Rubiaceae) |
title_short |
Ontogeny, allometry and architecture of Psychotria tenuinervis (Rubiaceae) |
title_full |
Ontogeny, allometry and architecture of Psychotria tenuinervis (Rubiaceae) |
title_fullStr |
Ontogeny, allometry and architecture of Psychotria tenuinervis (Rubiaceae) |
title_full_unstemmed |
Ontogeny, allometry and architecture of Psychotria tenuinervis (Rubiaceae) |
title_sort |
ontogeny, allometry and architecture of psychotria tenuinervis (rubiaceae) |
publisher |
Sociedade Botânica do Brasil |
series |
Acta Botânica Brasílica |
issn |
1677-941X |
publishDate |
2013-12-01 |
description |
We evaluated the ontogeny of the understory shrub Psychotria tenuinervis Müll.Arg., considering morphological and morphometric characters. Four ontogenetic stages were identified: seedling, juvenile, immature and adult (vegetative and reproductive phases). Size measurements and allometric relationships of the stem and crown were compared between the immature and adult stages. Diameter and total height of the stem, as well as crown depth and width, increased throughout the ontogenetic stages and differed among immature, vegetative adult and reproductive adult individuals. The number of branches was lower in immature individuals than in vegetative and reproductive adult individuals but did not differ between the last two. The bifurcation ratio did not vary during ontogenetic development. In general, allometric relationships between the stem and the crown were similar among the ontogenetic stages. Although there was a progressive increase in size during ontogenetic development, there was no change in the allometric relationships between the size variables and architecture of P. tenuinervis, indicating that the form of individuals does not change over the course of ontogeny. |
topic |
allometry architecture branching pattern ontogenetic stages understory |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400012&lng=en&tlng=en |
work_keys_str_mv |
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