Consulta: subjectFacets:"Flower"
Registros recuperados: 11
Data/hora: 09/06/2024 12:31:25

Alpinia purpurata (Vieill.) K. Schum.: planta ornamental para cultivo no Cerrado.
Provedor de dados: 14
Autores: ALONSO, A. M.; SILVA, J. C. S.
bitstream/item/77798/1/doc-298.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Ornamental plant; Flower; Indigenous organisms; Savanna.; Cerrado; Planta Ornamental.
Ano: 2010
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/883988

The role of petals in development of grey mould in strawberries
Provedor de dados: 102
Autores: Boff,Pedro; Kraker,Joop de; Gerlagh,Mathijs; Köhl,Jürgen.
Studies were conducted in annual crops of strawberry (Fragaria x ananassa) (cv. Elsanta to assess the relative importance of petals as an inoculum source of grey mould, caused by Botrytis cinerea and to identify during which period of flower and fruit development the presence of petals has a significant effect on development of grey mould on fruits. In 1998, the incidence of B. cinerea on flower parts was assessed, and the symptoms of grey mould on fruits were characterised with regards to their starting point. The incidence of B. cinerea on petals was 65-85% of those flowers that harboured B. cinerea. The starting point of symptoms was located underneath the sepals in 65-85% of fruits with grey mould, and petals were present at this site in about 50% of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Strawberries; Botrytis cinerea; Flower; Epidemiology; Inoculum source; Phenology.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582003000100011

The flower anatomy of five species of Myrteae and its contribution to the taxonomy of Myrtaceae
Provedor de dados: 39
Autores: Martos,Luana; Galan,Adrielle Tayrine Oliveira Froemming; Souza,Luiz Antonio de; Mourão,Káthia Socorro Mathias.
ABSTRACT Considerable effort has been spent towards understanding the phylogeny of Myrteae, and based on the phylogenetic data presently available the traditional subdivision of Myrteae into three subtribes is not supported. The present paper aims to assess the usefulness of floral characters in distinguishing five species that represent five of the six South American clades of Myrteae (Myrtaceae). Floral buds and flowers of Campomanesia adamantium, Eugenia pitanga, Myrceugenia alpigena, Myrcia multiflora and Myrciaria cuspidata were collected from individual plants growing in the Cerrado (Brazilian/Central South American savanna). Among these species, the perianth of E. pitanga is the most distinct due to its vasculurization and pilosity. The hypanthium...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anatomical characteristics; Myrtaceae; Floral vasculature; Flower; Phylogeny.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000100042

Colleters in Chamaecrista (L.) Moench sect. Chamaecrista and sect. Caliciopsis (Leguminosae-Caesalpinioideae): anatomy and taxonomic implications
Provedor de dados: 39
Autores: Silva,Marinalva dos Santos; Coutinho,Ítalo Antônio Cotta; Araújo,Maicon Nascimento; Meira,Renata Maria Strozi Alves.
ABSTRACT The genus Chamaecrista contains ca. 330 species organized into six sections, of which section Chamaecrista is the second largest (ca.75 species) distributed among six series, while the section Caliciopsis contains only two species. Colleters have been described in the genus Chamaecrista and they show potential taxonomic and phylogenetic significance. They are associated with lubrication, desiccation prevention and protection from microbial attacks of young developing organs. Although six types of colleters have been described for the genus Chamaecrista, there have been no studies focusing on the diversity of colleters in the sections Chamaecrista and Caliciopsis. Samples from developing leaves and flowers of both sections were obtained from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colleter; Flower; Histochemical analysis; Leaf; Polysaccharides; Secretory structures; Taxonomy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300382

Floral glands in asclepiads: structure, diversity and evolution
Provedor de dados: 39
Autores: Demarco,Diego.
ABSTRACT Species of Apocynaceae stand out among angiosperms in having very complex flowers, especially those of asclepiads, which belong to the most derived subfamily (Asclepiadoideae). These flowers are known to represent the highest degree of floral synorganization of the eudicots, and are comparable only to orchids. This morphological complexity may also be understood by observing their glands. Asclepiads have several protective and nuptial secretory structures. Their highly specific and specialized pollination systems are associated with the great diversity of glands found in their flowers. This review gathers data regarding all types of floral glands described for asclepiads and adds three new types (glandular trichome, secretory idioblast and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anatomy; Apocynaceae; Asclepiadoideae; Diversity; Evolution; Flower; Secretory structures.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300477

Floral biology and breeding system of Psychotria tenuinervis Muell. Arg. (Rubiaceae) in the Atlantic rain forest, SE Brazil
Provedor de dados: 39
Autores: Virillo,Carolina Bernucci; Ramos,Flavio Nunes; Castro,Cibele Cardoso de; Semir,João.
(Floral biology and breeding system oi Psychotria tenuinervis Muell. Arg. (Rubiaceae) in the Atlantic rain forest, SE Brazil). The aim of this study was to investigate pollination biology, floral morphometry, morph ratio and breeding system oiPsychotria tenuinervis in an area of Atlantic rain forest in southeastern Brazil. Pollination biology was studied based on focal observations and the breeding system was determined using controlled crosses; data on flower production and floral morphometry were compared between the two floral morphs. Flower production by the two floral morphs was similar, with flowers being reciprocally herkogamous, diurnal and pollinated at similar frequencies, mainly by medium-sized bees. Corolla length and diameter, as well as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic forest; Distyly; Flower; Herkogamy; Pollination.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062007000400012

Trichomes that secrete substances of a mixed nature in the vegetative and reproductive organs of some species of Moraceae
Provedor de dados: 39
Autores: Schnetzler,Bruna Noce; Teixeira,Simone Pádua; Marinho,and Cristina Ribeiro.
ABSTRACT This study aimed to obtain new information about the distribution, morphology and content of secretory trichomes present in the vegetative and reproductive organs of four species of Moraceae: Artocarpus heterophyllus, Dorstenia cayapia, Maclura tinctoria and Sorocea bonplandii. Stem, leaf, flower and inflorescence samples were processed for scanning electron and light microscopy. The species have secretory trichomes on the leaf blade, petiole and stem and also on the inflorescence and flowers of D. cayapia and S. bonplandii and on the peduncle of the inflorescence in A. heterophyllus. These trichomes are of the capitate type in all species, but A. heterophyllus also possess peltate secretory trichomes. Both trichome types exhibit a multicellular...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anatomy; Artocarpus; Dorstenia; Flower; Gland; Leaf; Maclura; Morphology; Sorocea.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300392

The monotypic Brazilian genus Diacrodon is a synonym of Borreria (Spermacoceae, Rubiaceae): morphological and molecular evidences
Provedor de dados: 42
Autores: MIGUEL,LAILA M.; SOBRADO,SANDRA V.; JANSSENS,STEVEN; DESSEIN,STEVEN; CABRAL,ELSA L.
ABSTRACT Diacrodon is a monotypic genus of the tribe Spermacoceae (Rubiaceae), endemic to northeastern Brazil. Diacrodon compressus is frequently misidentified with a two lobed calyx species of Borreria, B. verticillata. Traditionally, in Spermacoceae the fruit type was considered a diagnostic character among the genera. In this sense, D. compressus presents a strongly compressed, one seeded and indehiscent fruit (vs. globose, two seeded and dehiscent fruit in B. verticillata). In this work, we address two objectives: evaluate the systematic position and determine the identity of Diacrodon in respect to other taxa. Molecular analyses using ITS and ETS indicate that D. compressus is strongly related to other species of Borreria. The morphological results...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Flower; Fruit; ITS-ETS dataset; Morphology; Pollen; Seed.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000401397

Histological analysis of pollen-pistil interactions in sour passion fruit plants (Passiflora edulis Sims)
Provedor de dados: 47
Autores: Madureira,Hérika Chagas; Pereira,Telma Nair Santana; Cunha,Maura Da; Klein,Denise Espellet.
The success of sexual plant reproduction is directly influenced by specific interactions between the pollen and pistil. Light, fluorescence and scanning electron microscopy techniques were used to evaluate the steps of pollination in sour passion fruit plants (Passiflora edulis Sims). In the compatible interaction, pollen tubes grow through stigma projections towards the ovary. The pollen grain surface was found to be spheroidal and to consist of heteroreticulate exine with six colpi. Furthermore, analysis in vivo of pollen-pistil interactions indicated that stigmas of flowers 24 hours before anthesis are unable to discriminate compatible (genetically unrelated) and incompatible (genetically related) pollen grains. Taken together, these results provide...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Flower; Pollen tube; Pollination; Stigma.
Ano: 2012
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452012000200005

Increasing plant longevity and associated metabolic events in potted carnation (Dianthus caryophyllus L. Clove Pink)
Provedor de dados: 61
Autores: Karimi,Mahnaz; Asil,Moazzam Hassanpour; Zakizadeh,Hedayat.
The effects of aminooxyacetic acid, benzyladenine, and 1-methylcyclopropene treatments on the post-production flower quality of potted carnation plants (Dianthus caryophyllus L. Clove Pink) were investigated considering ethylene production and antioxidant metabolism. Maximum plant longevity (17 days) was obtained using 70 ppb of 1-methylcyclopropene. As compared to control plants, ethylene production was significantly decreased by aminooxyacetic acid at concentrations over 100 mg L-1, benzyladenine at 20 or 30 mg L-1, and 1-methylcyclopropene at 70 and 140 ppb. A significant increase in 1-aminocyclopropane-1-carboxylic-acid concentration was observed in 1-methylcyclopropene treated plants compared with the control ones. On the other hand, decline in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aminooxyacetic acid; Benzyladenine; Ethylene production; Flower; 1-methylcyclopropene.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202012000400003

Some thoughts on the physiology of caffeine in coffee: and a glimpse of metabolite profiling
Provedor de dados: 61
Autores: Baumann,Thomas W.
Human beings enjoy the flavor and stimulating activity of a cup of coffee without knowing that by doing so, they are part of a 'food web' and receive signals coffee plants build to improve their struggle for life. This review is centered in the first part on the purine alkaloid caffeine and its physiological role in the coffee plant's life cycle. Many of the thoughts and ideas presented here are plain speculation, because the real research revealing the secrets of plant physiology such as e.g. the formation of the coffee bean with all its ingredients, has just started. The recent achievements in molecular biology made it possible to tackle and answer new questions regarding the regulation of secondary metabolism in the coffee plant organs at selected...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Endosperm; Flower; Germination; Metabolite profiling; Purine alkaloid; Perisperm.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202006000100017