SciELO - Scientific Electronic Library Online

 
vol.21 issue3Fungal succession on leaves of Alchornea triplinervia (Spreng.) Muell. Arg. submerged in a stream of an Atlantic Rainforest in the state of São Paulo, BrazilOntogenia inicial do androceu de espécies de Ochnaceae subfam. Sauvagesioideae através da análise em microscopia eletrônica de varredura 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

MEDRI, MOACYR E. et al. Aspectos morfo-anatômicos e fisiológicos de Peltophorum dubium (Spr.) Taub. submetida ao alagamento e à aplicação de etrel. Revta. brasil. Bot. [online]. 1998, vol.21, n.3, pp.-. ISSN 1806-9959.  https://doi.org/10.1590/S0100-84041998000300004.

The effects of flooding and ethrel application on P. dubium for a 70-day period were studied in order to elucidate the aspects of plants tolerance to hypoxia. During the experiment the thickness of the stem base, and the allocation of dry matter for the roots, stems and leaves were evaluated. Flooding increased both the thickness of the stem base as well as a great hypertrophy of the lenticels. The ethrel application did not induce the formation of adventitious roots, but it stimulated the hypertrophy of lenticels. The flooding and/or ethrel application significantly affected the growth and development of the plants. This effect was greater in the flooded plants which had their lenticels sealed. The results show that P. dubium can tolerate periods of flooding, possibly because of the morpho-anatomic modifications induced by variations in the hormone levels, led by ethylene.

Keywords : Peltophorum dubium; ethrel; flooding.

        · abstract in Portuguese     · text in Portuguese

 

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