Results 31 to 40 of about 1,254 (198)

Structural anomalies in pollen grains of Dyckia racinae L.B.Sm. (Bromeliaceae)

open access: yesBrazilian Journal of Botany, 2020
The development of the pollen grains is a complex and regulated process. However, failures in sporogenesis and gametogenesis are common and include cell division errors and multiple structural modifications, culminating usually in abortions or, less frequently, in formation of anomalous pollen grains.
J. D. de Carvalho, J. M. S. de Oliveira
semanticscholar   +2 more sources

Biogeography and conservation status of the pineapple family (Bromeliaceae)

open access: yesDiversity and Distributions, Volume 26, Issue 2, Page 183-195, February 2020., 2020
Abstract Aim To provide distribution information and preliminary conservation assessments for all species of the pineapple family (Bromeliaceae), one of the most diverse and ecologically important plant groups of the American tropics—a global biodiversity hotspot.
Alexander Zizka   +7 more
wiley   +1 more source

Phylogeny, Adaptive Radiation, and Historical Biogeography of Bromeliaceae Inferred from ndhF Sequence Data [PDF]

open access: yes, 2007
Cladistic analysis of ndhF sequences identifies eight major bromeliad clades arranged in ladderlike fashion. The traditional subfamilies Tillandsioideae and Bromelioideae are monophyletic, but Pitcairnioideae are paraphyletic, requiring the description of
Berry, Paul E   +3 more
core   +3 more sources

Systematics of Bromelioideae (Bromeliaceae)—Evidence from Molecular and Anatomical Studies [PDF]

open access: yes, 2007
A reconstruction of the phylogeny of Bromeliaceae based on sequence data from three noncoding chloroplast DNA markers (trnL intron, trnT–trnL, and trnT–trnF intergenic spacer [IGS]) is presented, including 26 genera and 33 species.
Horres, Ralf   +3 more
core   +3 more sources

Anatomia de raízes de nove espécies de Bromeliaceae (Poales) da região amazônica do estado de Mato Grosso, Brasil Anatomy of the roots of nine species of Bromeliaceae (Poales) from the Amazon, Mato Grosso, Brazil

open access: yesActa Botânica Brasílica, 2011
Este estudo busca caracterizar raízes de Bromeliaceae: Aechmea bromeliifolia, A. castelnavii, A. mertensii (Bromelioideae), Dyckia duckei, D. paraensis, D. racemosa (Pitcairnoideae), Tillandsia adpressiflora, T. didistachae e T.
Ivone Vieira da Silva   +1 more
doaj   +1 more source

Influência das propriedades do solo sobre a abundância das espécies vegetais em campos ferruginosos no sudeste do Brasil [PDF]

open access: yes, 2008
Ferruginous "campos rupestres" are a particular type of vegetation growing on iron-rich primary soils. We investigated the influence of soil properties on plant species abundance at two sites of ferruginous "campos rupestres" and one site of quartzitic ...
MEGURO, Marico   +1 more
core   +1 more source

Inflorescences of the Bromeliad Vriesea friburgensis as Nest Sites and Food Resources for Ants and Other Arthropods in Brazil

open access: yesPsyche: A Journal of Entomology, Volume 2014, Issue 1, 2014., 2014
For the first time, the usage of bromeliad inflorescences as nesting sites for ants and other arthropods was studied. Frequencies of occurrence of nests were recorded from hollow stems of dried infructescences of the bromeliad Vriesea friburgensis on Santa Catarina Island, southern Brazil.
Volker S. Schmid   +4 more
wiley   +1 more source

Germinability after desiccation, storage and cryopreservation of seeds from endemic Encholirium Mart. ex Schult. & Schult. f. and Dyckia Schult. & Schult. f. species (Bromeliaceae) Germinabilidade de sementes de espécies endêmicas de Encholirium Mart. ex Schult. & Schult. f. e Dyckia Schult. & Schult. f. (Bromeliaceae) após dessecação, armazenamento e criopreservação

open access: yesActa Botânica Brasílica, 2007
(Germinability after desiccation, storage and cryopreservation of seeds from endemic Encholirium Mart. ex Schult. & Schult. f. and Dyckia Schult. & Schult. f. species (Bromeliaceae)).
Erika Tarré   +5 more
doaj   +1 more source

Limited pollen flow and high selfing rates toward geographic range limit in an Atlantic forest bromeliad [PDF]

open access: yes, 2015
Bromeliaceae is a Neotropical family that evolved ecological key innovations in association with extensive adaptive radiation. Its species present a variety of different mating system strategies varying within and among species, within genera and ...
Bered, Fernanda   +4 more
core   +1 more source

A ocorrência do mutualismo facultativo entre Dyckia maritima Backer (Bromeliaceae) e o cupim Cortaritermes silvestrii (Holmgren), Nasutitermitinae, em afloramentos rochosos no Parque Estadual de Itapuã, Viamão, RS [PDF]

open access: yesActa Botânica Brasílica, 2003
A presença de colônias de C. silvestrii é comum nos lajeados existentes em Itapuã. Na estação Morro da Grota1, 92,0 % dos termiteiros situados na rocha exposta e em ilhas de vegetação estão associados a D. maritima.
Celso Copstein Waldemar   +1 more
doaj   +1 more source

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