Results 91 to 100 of about 11,935 (255)

Competição aparente da invasora lambari Tradescantia Zebrina (Schinz) D. R. Hunt (commelinaceae) com comunidade vegetal de mata atlântica [PDF]

open access: yes, 2017
Anais do VI Encontro de Iniciação Científica e II Encontro Anual de Iniciação ao Desenvolvimento Tecnológico e Inovação – EICTI 2017 - 04 a 06 de outubro de 2017 - temática Ciências BiológicasLas invasiones biológicas son un proceso de degradación de ...
Castro, Wagner Antonio Chiba de   +1 more
core  

Translocation of nuclei and reorientation of the mitotic apparatus in the ontogeny of stomata in Trudescuntia virginiana L.

open access: yesActa Societatis Botanicorum Poloniae, 2014
In vitro studies of the ontogeny of stomata of young leaves of Tradescantia virginiana L. showed that: 1) translocation of nuclei, often along long, winding paths took place in companion cell mother cells before the onset of asymmetric mitosis, 2) the ...
Jadwiga A. Tarkowska   +2 more
doaj   +1 more source

TSO1 functions in cell division during Arabidopsis flower development [PDF]

open access: yes, 1997
We describe an Arabidopsis mutant, tso1, which develops callus-like tissues in place of floral organs. The tso1 floral meristem lacks properly organized three cell layers, and the nuclei of these cells are irregular in size and shape.
Liu, Zhongchi   +2 more
core  

Silicon Promotes Exodermal Casparian Band Formation in Si-Accumulating and Si-Excluding Species by Forming Phenol Complexes [PDF]

open access: yes, 2015
We studied the effect of Silicon (Si) on Casparian band (CB) development, chemical composition of the exodermal CB and Si deposition across the root in the Si accumulators rice and maize and the Si non-accumulator onion.
Fleck, Alexander T.   +6 more
core   +4 more sources

Radiobiological studies of plants orbited in biosatellite 2 [PDF]

open access: yes
Radiation induced mutation rates and cyotlogical changes in plants orbited on Biosatellite
Marimuthu, K. M.   +2 more
core   +1 more source

Seed rain and soil seed banks limit native regeneration within urban forest restoration plantings in Hamilton City, New Zealand [PDF]

open access: yes, 2012
Restoration of native forest vegetation in urban environments may be limited due to isolation from native seed sources and to the prevalence of exotic plant species.
Clarkson, Bruce D., Overdyck, Elizabeth
core   +1 more source

Monitoramento químico e do potencial genotóxico para o diagnóstico da qualidade de corpos hídricos

open access: yesRevista Brasileira de Ciências Ambientais, 2014
As bacias hidrográficas com forte urbanização estão sujeitas a impactos antrópicos que comprometem a qualidade dos corpos hídricos. Parâmetros químicos e indicadores biológicos fornecem dados relevantes sobre os potenciais efeitos dos poluentes hídricos ...
Gustavo Marques da Costa   +6 more
doaj  

Genotoxic evaluation of the River Paranaíba hydrographic basin in Monte Carmelo, MG, Brazil, by the Tradescantia micronucleus

open access: yesGenetics and Molecular Biology, 2015
Pollutants have adverse effects on human health and on other organisms that inhabit or use water resources. The aim of the present study was to assess the environmental quality of three watercourses in Monte Carmelo, MG, Brazil, using the micronucleus ...
Carlos F. Campos   +5 more
doaj   +1 more source

The diversity and floral hosts of bees at the Archbold Biological Station, Florida (Hymenoptera: Apoidea) [PDF]

open access: yes, 2002
A list is provided of 113 species of bees and their 157 known floral hosts at the Archbold Biological Station(ABS), a 2105 ha site on the Lake Wales Ridge in Highlands County in south-central Florida.
Deyrup, Mark   +2 more
core   +1 more source

Micronúcleos em tétrades de Tradescantia pallida (Rose) Hunt. cv. purpurea Boom: alterações genéticas decorrentes de poluição aérea urbana = Micronuclei in tetrads of Tradescantia pallida (Rose) Hunt. cv. purpurea Boom: genetic changes caused by urban air pollution

open access: yesActa Scientiarum: Biological Sciences, 2008
A atmosfera urbana contém uma mistura de poluentes que inclui substâncias mutagênicas e carcinogênicas. Associação entre estas substâncias e problemas respiratório e cardiovascular, além do aumento de determinados tipos de cânceres, é estabelecida na ...
Sizenando José de Andrade Júnior   +4 more
doaj  

Home - About - Disclaimer - Privacy