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  Tolerância de Himatanthus sucuuba Wood. (Apocynaceae) ao alagamento na Amazônia Central

Ferreira, C., Piedade, M. T. F., Parolin, P., & Barbosa, K. M. (2005). Tolerância de Himatanthus sucuuba Wood. (Apocynaceae) ao alagamento na Amazônia Central. Acta Botanica Brasilica, 19(3), 425-429.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-DA39-1 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-DA3A-0
Genre: Journal Article

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ferreira_2005.pdf (Publisher version), 35KB
 
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 Creators:
Ferreira, Cristiane, Author
Piedade, Maria Teresa Fernandez1, Author              
Parolin, Pia1, Author              
Barbosa, Keillah Mara, Author
Affiliations:
1Working Group Tropical Ecology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_976549              

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Free keywords: anoxia; hypoxia; hydrochoric dispersal; seedlings establishment
 Abstract: Himatanthus sucuuba is a tree species with known phytotherapic value which colonizes both white-water floodplains (várzea) and upland forests (terra firme) in Central Amazonian. The objective of this study was to compare germination and initial seedling development from seeds collected in both the ecosystems. There was no significant difference between dry seed mass, but in a four month period in a glasshouse in Manaus, Brazil, germination rate differed according to the substrate and origin of the seeds. In the substrate sand + sawdust (non-flooded) germination rate was high, independent of seed origin (várzea 94% and terra firme 91%). In the substrate constituted only by water (flooded), the seeds originating from várzea had a higher germination rate (96%) and seedling formation (84%) than those originating from terra firme which had a germination rate of 64% and none of the seeds formed seedlings. In this treatment, the radicles rot few days after their emission, indicating that the seeds originating from várzea present adaptive characteristics to the floodplain environment which are not present in seeds from terra firme.

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Language(s): por - Portuguese
 Dates: 2005
 Publication Status: Published in print
 Pages: -
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 Rev. Method: -
 Identifiers: eDoc: 261120
Other: 2435/S 38462
 Degree: -

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Title: Acta Botanica Brasilica
  Alternative Title : Acta bot. bras.
Source Genre: Journal
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Pages: - Volume / Issue: 19 (3) Sequence Number: - Start / End Page: 425 - 429 Identifier: ISSN: 0102-3306