Results 91 to 100 of about 12,097 (227)

Where is the reward? Floral nectaries in Aspidosperma australe flowers [PDF]

open access: yesRodriguésia
Nectaries are secretory structures that produce a solution rich in sugars, which are involved in animal-plant interactions. Such secretory structures can be externally distinguishable (recognizable), as in glands or discs, or not, as in some gynoecial ...
Dayanne Cristina Russi   +3 more
doaj   +1 more source

Aspidosperma species: A review of their chemistry and biological activities.

open access: yesJournal of Ethnopharmacology, 2019
ETHNOPHARMACOLOGICAL RELEVANCE Species of Aspidosperma are known popularly as "peroba, guatambu, carapanaúba, pau-pereiro" and "quina". The genus can be found in the Americas, mainly between Mexico and Argentina.
V. D. de Almeida   +6 more
semanticscholar   +1 more source

LA FAMILIA APOCYNACEAE S. STR. (APOCYNOIDEAE, RAUVOLFIOIDEAE) EN URUGUAY

open access: yesDarwiniana, 2010
Se presenta un tratamiento de las Apocynaceae s. str. (Apocynoideae, Rauvolfioideae) de Uruguay. Se reconocen diez especies de un total de siete géneros: Aspidosperma quebracho-blanco, Condylocarpon isthmicum, Forsteronia glabrescens, Mandevilla coccinea,
J. Francisco Morales
doaj  

Composição florística e estrutura de remanescentes de Chaco florestado no Pantanal brasileiro. [PDF]

open access: yes, 2011
O Chaco, de grande biodiversidade e endemismo, tem sido pouco estudado no Brasil, o que dificulta sua conservação e uso sustentável. Assim, o presente estudo objetivou descrever a composição florística e estrutural de três remanescentes de Chaco ...
DAMASCENO JÚNIOR, G. A.   +2 more
core  

Direct seeding of dry forest tree species in abandoned pastures: effects of grass canopy and seed burial on germination. [PDF]

open access: yes, 2019
Natural tree regeneration in abandoned pastures can be hampered by various biotic and abiotic filters, including seed removal and predation. We tested the effects of maintenance and removal of grass and seed deposition (buried and unburied) on seed ...
GUARINO, E. de S. G., SCARIOT, A. O.
core   +1 more source

Structural Basis of Cycloaddition in Biosynthesis of Iboga and Aspidosperma Alkaloids

open access: yesNature Chemical Biology, 2019
Cycloaddition reactions generate chemical complexity in a single step. Here we report the crystal structures of three homologous plant-derived cyclases involved in the biosynthesis of iboga and aspidosperma alkaloids.
L. Caputi   +7 more
semanticscholar   +1 more source

Influência do tamanho e do formato da semente de duas cultivares de milho na sua qualidade durante o armazenamento. [PDF]

open access: yes, 2018
Trabalho apresentado no X Congresso Brasileiro de ...
ANDRADE, R. V.   +5 more
core  

Florestas estacionais no Pantanal, considerações florísticas e subsídios para conservação. [PDF]

open access: yes, 2020
Foi feita uma atualização do conhecimento sobre Florestas Estacionais no Pantanal, em grande parte baseado em dados dos Projetos PROBIO-Pantanal e GeoMS.
DAMASCENO JUNIOR, G. A.   +3 more
core  

Isolation and Antimacrofouling Activity of Indole and Furoquinoline Alkaloids from ‘Guatambú’ Trees (Aspidosperma australe and Balfourodendron riedelianum)

open access: yesChemistry and Biodiversity, 2019
In this work, the antifouling activity of five alkaloids, isolated from trees of the Atlantic rainforest, was studied. The tested alkaloids were olivacine (1), uleine (2) and N‐methyltetrahydroellipticine (3) from Aspidosperma australe (‘yellow guatambú’)
Miriam Pérez   +7 more
semanticscholar   +1 more source

Resistência natural de nove madeiras do semi-árido brasileiro a fungos causadores da podridão-mole Natural resistance of nine woods of Brazilian semi-arid region to soft-rot fungi

open access: yesRevista Árvore, 2005
O objetivo desta pesquisa foi avaliar a resistência de nove madeiras de ocorrência no semi-árido brasileiro a fungos de podridão-mole, em condições de laboratório. As madeiras estudadas foram algaroba (Prosopis juliflora), angico (Anadenanthera colubrina
Juarez Benigno Paes   +2 more
doaj   +1 more source

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