Results 81 to 90 of about 9,134 (223)

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  

Aborto polínico em Tradescantia pallida var. purpurea

open access: yesRevista Thema
Este estudo foi desenvolvido para testar a viabilidade do bioensaio aborto polínico (AP) em botões florais de Tradescantia pallida var. purpurea na avaliação de genotoxicidade da água superficial.
Luciana Rodrigues Nogueira   +3 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  

Insect (Arthropoda: Insecta) Composition in the Diet of Ornate Box Turtles (Terrapene ornata ornata) in Two Western Illinois Sand Prairies, with a New State Record for Cyclocephala (Coleoptera: Scarabaeidae) [PDF]

open access: yes, 2018
A study of fecal samples collected over a two-year period from juvenile ornate box turtles (Terrapene ornata ornata Agassiz) revealed diets consisting of six orders of insects representing 19 families. Turtles were reared in captivity from eggs harvested
Lago, P. K.   +3 more
core   +3 more sources

3D Analysis of chromosome architecture: advantages and limitations with SEM [PDF]

open access: yes, 2005
Three-dimensional mitotic plant chromosome architecture can be investigated with the highest resolution with scanning electron microscopy compared to other microscopic techniques at present.
Allen TD   +8 more
core   +1 more source

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

Plant species first recognised as naturalised for New South Wales in 2002 and 2003, with additional comments on species recognised as naturalised in 2000–2001 [PDF]

open access: yes, 2013
Information is provided on the taxonomy and distribution of 71 taxa of naturalised or naturalising plants newly recorded for the state of New South Wales during the period 1 January 2002 to 31 December 2003.
Barker, Clive H.   +3 more
core  

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  

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

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  

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