Orchidaceae da Reserva Ecológica do Guará, DF, Brasil

Batista, João A. N.; Bianchetti, Luciano de Bem; Pellizzaro, Keiko Fueta

doi:10.1590/s0102-33062005000200004

Cited by 25 publications

(22 citation statements)

References 5 publications

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“…The 34 species that are new records for the state of Sergipe demonstrate how significant floristic work can be to our understanding of the biological diversity of a region, and how this type of work can Habenaria (10 spp. ), which was very common in fields (Batista & Bianchetti 2003, Batista et al 2005, Rocha & Waechter 2006.…”

Section: Resultsmentioning

confidence: 99%

Survey of orchidaceae from the State of Sergipe, Brazil

et al. 2012

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of Orchidaceae from the state of Sergipe, Brazil. Biota Neotrop. 12(2): http://www.biotaneotropica.org.br/ v12n2/en/abstract?inventory+bn01012022012Abstract: The state of Sergipe, located in the Northeast Region of Brazil, covers an area of 21,994 km 2 and is the smallest state in the country. The vegetation of this region is predominantly caatinga, but there are also mangroves, dunes, restinga, fragments of original Atlantic Forest (which are intermingled with pastures, secondary growth, and agricultural land) and cerrado. During intensive fieldwork in Sergipe, we observed various Orchidaceae species that had not been recorded for the state, which made it necessary to update the list of species for this region. Within the state, the family is represented by 63 species and 34 genera, of which Habenaria (10 spp.) Epidendrum (4 spp.) and Encyclia (4 spp.) are highlights. Orchidaceae species from this region are generally terrestrial and occur in grasslands (59%, 37 of 63 spp.). The remaining species are epiphytes (21 spp.) and hemiepiphytes (3 spp.). The majority of the species flower at the beginning of the rainy season. Of the 61 species that were recorded during this study, 34 species are new records for the state of Sergipe. This work includes a list of the species of Orchidaceae from Sergipe, and provides data about the phenology and habitat for each taxon. Resumo: O estado de Sergipe, localizado na região Nordeste do Brasil, abrange uma área de 21.994 km 2 , sendo o menor da federação. A cobertura vegetal predominante do estado é representada pela Caatinga, mas encontra-se também vegetação de mangue, dunas, restingas, fragmentos florestais, originários da Mata Atlântica, entremeados por áreas de pastagens, capoeiras e áreas agrícolas, além de formações de Cerrado. A partir de um intenso trabalho de campo, observou-se a ocorrência de diversas Orchidaceae ainda não catalogadas para o estado, portanto, fazendo-se necessária a atualização na listagem das espécies ocorrentes em Sergipe. A família está representada no estado por 63 espécies subordinadas a 34 gêneros, dentre os quais se destacam: Habenaria (10 spp.) Epidendrum (4 spp.) e Encyclia (4 spp.). As espécies encontradas ocorrem principalmente nas formações campestres (59%, 37 de 63), o que explica a predominância da forma de vida terrestre. As demais espécies estão distribuídas em epífitas (21 spp.) e hemiepífitas (3 spp.). A maioria das espécies floresce no início do período chuvoso. Dentre as 63 espécies encontradas 34 são novas ocorrências para o estado de Sergipe. Este trabalho inclui listagem das espécies ocorrentes em Sergipe, assim como dados fenológicos e habitat. Palavras-chave: plantas do nordeste, inventário, biodiversidade vegetal.

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Section: Resultsmentioning

confidence: 99%

Survey of orchidaceae from the State of Sergipe, Brazil

et al. 2012

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“…A família Orchidaceae é uma das mais diversas e representativas do Cerrado (BATISTA et al, 2005). Das cinquenta espécies do gênero Cyrtopodium Rchb.…”

Section: Introductionunclassified

Germinação e desenvolvimento in vitro de orquídea epífita do Cerrado

Silva

Araújo

Sousa

et al. 2017

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RESUMOOrquídeas são plantas muito procuradas em função da beleza e diversidade, de cores e formatos, de suas flores. Visando obter uniformidade, vigor e sanidade das mudas bem como produzir grandes quantidades para a comercialização usa-se a propagação in vitro. O objetivo deste trabalho foi avaliar a geminação e o desenvolvimento in vitro de Cyrtopodium saintlegerianum para aclimatação. Os meios MS, MS½, Knudson C modificado e Simplificado foram testados na germinação das sementes. No desenvolvimento das plântulas foram avaliados os meios Knudson C modificado, MS e MS modificado (adição de auxina e citocinina). Os meios MS, MS½ e Knudson C modificado promoveram germinação acima de 80% após sete dias. Contudo, no meio Simplificado as sementes germinaram após trinta dias. Nas duas avaliações, trinta e sessenta dias após o início do experimento, o meio Knudson C modificado foi eficiente para as variáveis observadas demonstrando seu potencial uso na germinação e desenvolvimento dessa espécie. Palavras-chave: Cyrtopodium saintlegerianum Rchb. f., Orchidaceae, meios de cultivo, reguladores de crescimento. ABSTRACT In vitro germination and development of the Cerrado epiphytic orchidOrchids are very popular plants due to the beauty and diversity, of colors and shapes, of their flowers. In order to obtain uniformity, vigor and sanity of the seedlings as well as to produce large quantities for the commercialization is used the in vitro propagation. The objective of this study was to evaluate the germination and in vitro development of Cyrtopodium saintlegerianum for acclimatization. The MS, MS½, Knudson C modified and Simplified media were tested on seed germination. In the development of the seedlings were evaluated Knudson C modified, MS and MS modified (addition of auxin and cytokinin). The MS, MS½ and Knudson C modified media promoted germination above 80% after seven days. However, in the Simplified medium the seeds germinate after thirty days. In the two evaluations, thirty and sixty days after the beginning of the experiment, the Knudson C modified medium was efficient for the observed variables demonstrating their potential use in germination and development of this species.

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“…Some authors reported that B. catenulata was found in different Brazilian States, such as Tocantins and Maranhão (Silva et al 1995), Minas Gerais (Araújo et al 2002), Distrito Federal (Batista et al 2005) and São Paulo (Ferreira et al 2010), and also in other countries, such as Bolivia (Vásquez et al. 2003) and Paraguay (Schinini 2010).…”

Section: Introductionmentioning

confidence: 99%

The Bletia catenulata ornamental orchid is self-compatible but pollinator-dependent for reproduction

Neto

Correa

Barros

et al. 2015

Pesqui. Agropecu. Trop.

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Bletia catenulata is a native Brazilian orchid whose populations have suffered from predatory collection. Aiming at elucidating aspects of its reproductive biology and the relation with seed germination, pollination tests were carried out in flowers of plants cultivated in a greenhouse. Manual cross and self-pollination resulted in high percentage of fructification (76.7-86.7 %), being only 26.7 % for natural pollination, in which the absence of pollinators, due to flower isolation, resulted in absence of fruits. In vitro seed germination for all fruits from the different pollination processes was low, being 8.6 % the highest percentage for protocorms. Thus, B. catenulata is selfcompatible, resulting in viable seeds, but pollinator-dependent for sexual reproduction.

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Orchidaceae da Reserva Ecológica do Guará, DF, Brasil

Cited by 25 publications

References 5 publications

Survey of orchidaceae from the State of Sergipe, Brazil

Survey of orchidaceae from the State of Sergipe, Brazil

Germinação e desenvolvimento in vitro de orquídea epífita do Cerrado

The Bletia catenulata ornamental orchid is self-compatible but pollinator-dependent for reproduction

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