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Direct sampling technique of bees on Vriesea philippocoburgii (Bromeliaceae, Tillandsioideae) flowers
Tania Mara Guerra,Afonso Inácio Orth
Biotemas , 2004,
Abstract: In our study on Vriesea philippocoburgii Wawra pollination, due to the small proportion of flowers in anthesis on a single day and the damage caused to inflorescences when netting directly on flowers, we used the direct sampling technique (DST) of bees on flowers. This technique was applied to 40 flowering plants and resulted in the capture of 160 specimens, belonging to nine genera of Apoidea and separated into 19 morph species. As DST maintains the integrity of flowers for later Bees’ visits, it can enhance the survey’s performance, constituting an alternative methodology for the collection of bees visiting flowering plants.
Physiological Characterization of Two Tropical Epiphyte Species: Dyckia distachya and Vriesea platynema (Bromeliaceae)  [PDF]
Virgilio Gavicho Uarrota,Regina de Oliveira Rodrigues,Marilia Shibata,Ricardo Cipriani
Asian Journal of Plant Sciences , 2012,
Abstract: Leaf extracts of two species of bromeliads (Vriesea platynema and Dyckia distachya) differing in their phenotype were investigated in this study. Physiological and biochemical changes combined with the photosynthetic behavior were investigated. Dyckia distachya showed superiority in chlorophylls, carotenoids and total carbohydrates. Vriesea platynema showed higher starch content, light and CO2 flow curves following a quadratic model. We find out that Dyckia distachya has an efficient mechanism for surviving adverse environmental factors.
A new species of Vriesea Lindl. (Bromeliaceae, Tillandsioideae) from serra da Canastra, Minas Gerais State, Brazil
Versieux, Leonardo M.;Wanderley, Maria das Gra?as Lapa;
Acta Botanica Brasilica , 2008, DOI: 10.1590/S0102-33062008000100009
Abstract: a new species of vriesea lindl. belonging to section xiphion (e. morren) e. morren ex mez. - v. sanfranciscana versieux & wand.- is described and illustrated. the species is only known to occur in the serra da canastra national park, located in the southwestern minas gerais, brazil, and is morphologically related to v. atropurpurea silveira from serra do cipó, espinha?o range.
Bromeliaceae from Pico Piraí, Guaratuba Municipality (Parana, Brazil) Bromeliaceae Juss. do Pico Piraí, município de Guaratuba (Paraná, Brasil)  [cached]
Raquel R. B. Negrelle,Leonardo Kumagai Antunes Sampaio,Rosemeri Morokawa,Ivan Lewiski
Semina : Ciências Biológicas e da Saúde , 2011,
Abstract: The results of a Bromeliaceae Juss. floristic survey in the Piraí Mountain, Araraquara complex(Guaratuba Municipality, Paraná State) are presented. Twenty six species included in nine genera and three subfamilies were registered. Bromelioideae presented the highest genera diversity and Tillandsioideae showed the highest species diversity, including twelve species belonging to the genus Vriesea (46%). It was the first register of Nidularium procerum Lindm., Tillandsia stricta Sol. ex Ker Gawl., Vriesea altodaserrae L. B. Sm., Vriesea erythrodactylon (E. Morren) E. Morren ex Mez, Vrieseaflava And.Costa, H. Luther & Wand., Vriesea friburgensis Mez, Vriesea hoehneana L. B. Sm., Vriesea inflata (Wawra) Wawra e Wittrockia superba Lindm. at the Guaratuba Municipality. Dyckia leptostachya Baker was collected for the first time at the coastal zone of Paraná State, being this record done after 40 years since its last register in the State. For each species, information on phenology, geographic distribution and vulnerability level are included. Apresentam-se resultados de levantamento florístico das espécies de Bromeliaceae Juss. no Pico Piraí, Complexo do Araraquara (Guaratuba, Paraná). Verificou-se a ocorrência de 26 espécies pertencentes a nove gêneros e três subfamílias. Bromelioideae englobou a maior diversidade de gêneros e Tillandsioideae registrou-se a maior diversidade de espécies, sendo 12 delas incluídas no gênero Vriesea (46%). As seguintes espécies foram registradas pela primeira vez no município de Guaratuba: Nidularium procerum Lindm., Tillandsia stricta Sol. ex Ker Gawl., Vriesea altodaserrae L. B. Sm., Vriesea erythrodactylon (E. Morren) E. Morren ex Mez, Vriesea flava And. Costa, H. Luther & Wand.,Vriesea friburgensis Mez, Vriesea hoehneana L. B. Sm., Vriesea inflata (Wawra) Wawra e Wittrockia superba Lindm.. Dyckia leptostachya Baker foi registrada pela primeira vez na zona litoranea paranaense e após 40 anos do último registro de coleta da espécie no Estado. S o apresentadas informa es sobre fenologia,distribui o geográfica e grau de vulnerabilidade para cada espécie identificada.
Extrativismo de bromélias no Estado do Paraná
Negrelle, Raquel Rejane Bonato;Anacleto, Adilson;
Ciência Rural , 2012, DOI: 10.1590/S0103-84782012000600005
Abstract: aiming to contribute to the better understanding of the wild harvesting participation in the context of the bromeliads trade, the results from a study focused on: a) identifying and to characterizing the bromeliads wild harvesters (formally and not formally registered) in the state of the paraná; b) identifying and characterizing the harvesting methodologies, preparation and trade routes, and c) surveying the harvesters opinion on the facilities and difficulties of bromeliads wild harvesting are presented. the bromeliads wild harvesting was detected in 12 municipalities at parana state, involving 31 harvester families, most of them concentrated at the coastal zone (n=10) and ortigueira mun. (7). two basic harvester types were identified: resident and opportunist with outstanding differences between them especially related to volume and forms of extraction. a total of 21 bromeliads species were identified as submitted to wild harvesting, being the more frequently collected: vriesea incurvata gaudich. (cited by 90% of the interviewed harvesters), nidularium innocentii lem. (77%), vriesea platynema gaudich. (67%), tillandsia stricta sol. ex ker gawl. (55%) and vriesea carinata wawra (55%).
Morphoanatomy and ontogeny of fruit in Bromeliaceae species
Fagundes, Natividad Ferreira;Mariath, Jorge Ernesto de Araujo;
Acta Botanica Brasilica , 2010, DOI: 10.1590/S0102-33062010000300020
Abstract: this study aims to give an overall view of fruit structure in bromeliaceae, since these studies are extremely scarce in this family, showing the morphology, anatomy and ontogeny of fruits of six species belonging to six different genera, representing three subfamilies. all species studied have a tricarpellary and trilocular ovary, with an obturator covering the placental region. dyckia maritima, pitcairnia flammea, tillandsia aeranthos and vriesea carinata have capsular fruits (septicidal or biscidal), characterized mainly by the presence of macrosclereids in the exocarp or endocarp, fibers in the ventral region of the carpels, six dehiscence lines and three vascular bundles in each carpel. aechmea calyculata and billbergia nutans have fruits classified as berries, presenting exocarp and hypodermis as mechanical layers and many vascular bundles in each carpel. many useful characters for taxonomy of bromeliaceae were revealed, so fruits are excellent tools for delimitation of genera and subfamilies. in relation to bromeliaceae capsules, macrosclereids are conspicuous structures of the pericarp and fruit anatomy is greatly related to dehiscence type. the u-shaped cell wall thickenings are a very common character in this family and can be identified as structures also occurring in monocot fruits.
Brazilian Bromeliaceae species: isolation of arylpropanoid acid derivatives and antiradical potential
Rocha, Fabíola D.;Yano, Mami;Cunha, Márcio R. da;Gabriel, Felipe T.;Cordeiro, Renato S. B.;Menezes, Fábio S.;Kaplan, Maria Auxiliadora C.;
Revista Brasileira de Farmacognosia , 2010, DOI: 10.1590/S0102-695X2010000200017
Abstract: a total of twenty different extracts from six brazilian bromeliaceae species was screened for antioxidant activity by assessment of their capacity to scavenge the dpph radical. in a general way, the polar rhizome extracts from bromeliaceae representatives showed better antioxidant results than the extracts from leaves and fruits of the same species. the best results were found for the rhizome extracts of vriesea procera (mart. ex schult.f.) wittm. and neoregelia cruenta (graham) l.b. sm. crude methanol extract of ananas bracteatus (lindl.) schult. & schult. f. leaf had a significant antiradical activity among the leaves extracts assessed its purification afforded four metabolites: 2-o-feruloyl glyceride, 2-o-p-coumaroyl glyceride, 5,7,4'-trihydroxy-3,3',5'-trimethoxyflavone and 3-o-β-d-glucopyranosyl sitosterol.
In vitro culture of Vriesea gigantea and Vriesea philippocoburgii: two vulnerable bromeliads native to Southern Brazil
Droste, Annette;Silva, Anelise Machado da;Matos, Adriana Vieira;Almeida, Júlia Winck de;
Brazilian Archives of Biology and Technology , 2005, DOI: 10.1590/S1516-89132005000600006
Abstract: micropropagation studies were carried out using the seeds for establishing an in vitro culture of vriesea gigantea and vriesea philippocoburgii. germination rate of v. gigantea was higher than of v. philippocoburgii. plantlets of v. philippocoburgii gave rise to many adventitious shoots when cultivated in knudson basal medium. in contrast, for v. gigantea, a higher salts-concentration was needed, so that the number of shoots was increased by murashige and skoog medium. addition of activated charcoal and naphthaleneacetic acid in regeneration medium allowed the growth of shoots and the formation of roots, confirming the success of in vitro culture. the differences in expression of the genotypes reinforce the need of more research in order to set up the conditions that could offer the best response of the specific tissues.
Genetics, evolution and conservation of Bromeliaceae
Zanella, Camila M.;Janke, Aline;Palma-Silva, Clarisse;Kaltchuk-Santos, Eliane;Pinheiro, Felipe G.;Paggi, Gecele M.;Soares, Luis E.S.;Goetze, Márcia;Büttow, Miriam V.;Bered, Fernanda;
Genetics and Molecular Biology , 2012, DOI: 10.1590/S1415-47572012000600017
Abstract: bromeliaceae is a morphologically distinctive and ecologically diverse family originating in the new world. three centers of diversity, 58 genera, and about 3,140 bromeliad species are currently recognized. we compiled all of the studies related to the reproductive biology, genetic diversity, and population structure of the bromeliaceae, and discuss the evolution and conservation of this family. bromeliads are preferentially pollinated by vertebrates and show marked variation in breeding systems, from predominant inbreeding to predominant outcrossing, as well as constancy in chromosome number (2n = 2x = 50). autogamous or mixed mating system bromeliads have a high inbreeding coefficient (fis), while outcrossing species show low fis. the degree of differentiation among populations (fst) of species ranges from 0.043 to 0.961, which can be influenced by pollen and seed dispersal effects, clonal growth, gene flow rates, and connectivity among populations. the evolutionary history of the bromeliaceae is poorly known, although some studies have indicated that the family arose in the guayana shield roughly 100 mya. we believe that genetic, cytogenetic, and reproductive data will be essential for diagnosing species status and for assisting conservation programs.
Chromosome numbers in Bromeliaceae
Cotias-de-Oliveira, Ana Lúcia Pires;Assis, José Geraldo Aquino de;Bellintani, Moema Cortizo;Andrade, Jorge Clarêncio Souza;Guedes, Maria Lenise Silva;
Genetics and Molecular Biology , 2000, DOI: 10.1590/S1415-47572000000100032
Abstract: the present study reports chromosome numbers of 17 species of bromeliaceae, belonging to the genera encholirium, bromelia, orthophytum, hohenbergia, billbergia, neoglaziovia, aechmea, cryptanthus and ananas. most species present 2n = 50, however, bromelia laciniosa, orthophytum burle-marxii and o. maracasense are polyploids with 2n = 150, 2n = 100 and 2n = 150, respectively, while for cryptanthus bahianus, 2n = 34 + 1-4b. b chromosomes were observed in bromelia plumieri and hohenbergia aff. utriculosa. the chromosome number of all species was determined for the first time, except for billbergia chlorosticta and cryptanthus bahianus. our data supports the hypothesis of a basic number of x = 25 for the bromeliaceae family and decreasing aneuploidy in the genus cryptanthus.
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