Orchids
Mostrando 25-36 de 70 artigos, teses e dissertações.
-
25. An effective homologous cloning method for isolating novel miR172s from Phalaenopsis hybrida
MiR172 is an important microRNA that regulates floral development in various plants and downregulates AP2 family members to relieve the stress on floral determinacy, leading to phase transition from vegetative to reproductive growth. In this work, PCR with primers designed based on the rice miR172 sequence was used to isolate two miR172-like transcripts from
Genet. Mol. Biol.. Publicado em: 15/04/2014
-
26. Documentation of the medicinal knowledge of Prosthechea karwinskii in a Mixtec community in Mexico
In Mexico, native orchids are appreciated for their ornamental value and traditional uses and in many indigenous communities they comprise part of a biocultural heritage. The orchid Prosthechea karwinskii (Mart.) J.M.H. Shaw, Orchidaceae, is particularly relevant in this context, although some of its traditional uses have been attributed to a very similar sp
Rev. bras. farmacogn.. Publicado em: 2014-04
-
27. Desinfestação química para semeio e recultivo in vitro de orquídeas e sua influência sobre a nutrição das plântulas / Chemical disinfection for sowing and reculture in vitro of orchids and its influence on seedling nutrition
O uso de desinfestantes químicos como a água sanitária comercial (ASC) para esterilização dos meios de cultura para a propagação in vitro de orquídeas mostra-se uma técnica eficiente e de baixo custo em alternativa ao uso da autoclave e câmara de fluxo laminar (CFL). Todavia, algumas dúvidas sobre o tipo e volume de recipientes utilizados e o efei
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/07/2011
-
28. Long-term male aggregations of Euglossa melanotricha moure (Hymenoptera: Apidae) on fern fronds Serpocaulon triseriale (Pteridophyta: Polypodiaceae)
A communal dormitory of male orchid bees, Euglossa melanotricha Moure, was monitored over a one-year period, when they passed the night in the fronds of a Serpocaulon triseriale (Polypodiaceae) fern. The bees used the same fronds continuously, moving to neighboring fronds as senescence set in. As many as 49 males were observed together on any one night, clin
Neotropical Entomology. Publicado em: 2011-10
-
29. Assessment of genetic diversity in Cattleya intermedia Lindl. (Orchidaceae)
Orchids are valuable pot plants and Cattleya intermedia is a promising species underused in breeding programs. Recently, breeding work with this species produced superior plants that are believed to be not the true species owing to the morphological differences from wild plants. The aim of this study was to estimate the level of genetic diversity and interre
Brazilian Archives of Biology and Technology. Publicado em: 2011-10
-
30. Mycorrhizal diversity in Coppensia doniana (Orchidaceae) and phylogeny of mycorrhizal fungi associated with the Oncidiinae subtribe / Diversidade micorrízica em Coppensia doniana (Orchidaceae) e filogenia de fungos micorrízicos associados à subtribo Oncidiinae
In nature, orchids are fully dependent on mycorrhizal fungi for germination. These fungi can penetrate root cells and form pelotons, whose digestion provides simple sugars for the embryo. During the achlorophyllous seedling stage, orchids are obligatory dependent on the fungi, and some species remain so through life, while others become facultatively respons
Publicado em: 2010
-
31. Composição mineral do meio de cultura para crescimento in vitro de Cattleya walkeriana / Mineral composition of the culture medium for in vitro growth of Cattleya walkeriana
A família orquidácea possui cerca de 30.000 espécies espalhadas por quase todo o globo terrestre. Dentre as orquídeas, o grupo das catléias tem grande importância no mercado mundial de flores. Uma das principais formas de produção dessas plantas é o semeio assimbiótico in vitro. Muitos têm sido os meios de cultura utilizados para o semeio e cresci
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/07/2009
-
32. Fenologia, biologia floral e germinação in vitro de Cyrtopodium eugenii Rchb. f. &Warm. (Orchidaceae) / Fenology, floral biology and in vitro germination of Cyrtopodium eugenii Rchb.f. &Warm. (Orchidaceae)
A espécie Cyrtopodium eugenii Rchb. f. (Orchidaceae) é amplamente distribuída pelo Brasil, sendo o Planalto Central o seu principal centro de diversidade. C. eugenii é uma espécie terrestre, comumente encontrada no Cerrado, crescendo em solos arenosos, ambientes secos e à meia sombra. Devido ao caráter exótico de sua inflorescência e à beleza de su
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/02/2009
-
33. Chromosome studies in Orchidaceae from Argentina
The center of diversity of Argentinean orchids is in the northeast region of the country. Chromosome numbers and karyotype features of 43 species belonging to 28 genera are presented here. Five chromosome records are the first ones at the genus level; these taxa are Aspidogyne kuckzinskii (2n = 42), Eurystyles actinosophila (2n = 56), Skeptrostachys paraguay
Genetics and Molecular Biology. Publicado em: 23/10/2009
-
34. Orchidaceae nativas da região central de São Paulo, Brasil : florística, interação com forófitos, proposta de novas espécies e propagação in vitro de uma espécie ameaçada de extinção / Native Orchidaceae of the central region of São Paulo, Brazil: floristic, interaction nested with host tree, new species proposed and in vitro propagation of threatened of extinction species
Aiming to know the sorts of Orchidaceae of the central region of the State of São Paulo, from 1996 and more intensively from 2005, visits were carried out in 125 forest fragments of 23 local municípios, with weekly periodicity and also, fortnightly. The collect were assistematics, being each fragment visited in the biggest number of points. The species not
Publicado em: 2009
-
35. Extrato pirolenhoso no cultivo de orquídeas
The use of pyroligneous extract in the cultivation of plants is improvement of development. The effect of the use of different shot of pyroligneous extract in vegetative of two orchids of the gender Cattleya was studied in greenhouse. Used plants Cattleya intermedia Lindl and Cattleya loddigesii Lindl, grown in pots containing substrate composite coconut fib
Publicado em: 2009
-
36. Fenologia, biologia floral e germinação in vitro de Cyrtopodium eugenii Rchb. f. &Warm. (Orchidaceae) / Fenology, floral biology and in vitro germination of Cyrtopodium eugenii Rchb.f. &Warm. (Orchidaceae)
Cyrtopodium eugenii Rchb. f. (Orchidaceae) is a specie widely distributed in Brazilian savannah, being the Planalto Central its main center of diversification. C. eugenii is a terrestrial specie, usually found in the Cerrado, growing in sand soil, dry environment and to the half shade. Due the beauty and exotic character of its flowers, C. eugenii present hi
Publicado em: 2009