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| Registros recuperados: 33 | |
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| Saraiva,Diogo F.; Paula,Cláudio C. de; Moraes,Paulo José de; Vinícius-Silva,Ronaldo; Silva,Mariana M.; Dias,Denise C.F.S.; Botelho,Soraya A.. |
| ABSTRACT Ferruginous Rocky Outcrops have high levels of species richness and endemism, but have been threatened by several anthropic actions, especially mining. Eragrostis polytricha, a common grass species in the vegetation of these outcrops, has shown promising features for use in the recovery of mining areas. However, in order to fully understand the species’ potential for such use, its requirements for germination, seed dormancy break and seedling development must be determined. Thus, we aimed to: (1) assess the temperature conditions needed for seeds of E. polytricha to germinate; (2) evaluate the effects of KNO₃ in breaking seed dormancy; and (3) analyze the germination efficiency of seeds that are still in spikelets. The experiment included seven... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alternating temperatures; Hairy sheath lovegrass; KNO₃; Mining areas; Native species. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000300497 |
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| Santos, Paulo Augusto Almeida; Paiva, Renato; Silva, Luciano Coutinho; Souza, Ana Cristina de; Santana, Marlucia Cruz de; Silva, Diogo Pedrosa Corrêa da. |
| The aim of this study was to evaluate the efficiency of vitrification and droplet vitrification for the cryopreservation of Hancornia speciosa shoot tips. The shoot tips were subjected to four different periods of exposure (15, 30, 45 and 60 min.) to plant vitrification solution 2 (PVS2) before plunging into liquid nitrogen. We evaluated the regrowth of H. speciosa shoot tips that were cryopreserved by the classical vitrification technique and by the droplet vitrification technique. Shoot tips were submitted to different periods of pre-culture (absence, 24 or 48h) in a medium containing 0.3 M sucrose prior to cryopreservation. With a PVS2 exposure period of 60 min., significant differences were observed between the two techniques used in this study with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.00.00.00-4 - ciências agrárias; 2.03.03.00-9 - fisiologia vegetal; Native species; In vitro conservation; Recalcitrant seeds; Plant genetic diversity conservation; Vitrification; Droplet vitrification Conservação in vitro; Criopreservação vegetal. |
| Ano: 2015 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/19573 |
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| Hisano, Hamilton; EMBRAPA Dourados; Ishikawa, Márcia Mayumi; EMBRAPA - Dourados; Ferreira, Rosana de Ávila; EMBRAPA - Dourados; Bulgarelli, André Luiz Azambuja; Costa, Thiago Raphael; Centro Universitário da Grande Dourados - Dourados; Pádua, Santiago Benites de; Faculdade Dourados - Dourados. |
| O presente estudo avaliou o óleo de cravo como anestésico para juvenis de dourado em cinco diferentes concentrações (20, 30, 40, 50 e 60 mg L-¹), utilizando como critério para determinação da concentração ideal os tempos de indução e de recuperação ao efeito do anestésico. Em relação aos tempos de indução, verificou-se diferença significativa (p < 0,05) entre as concentrações de 20, 30, 40 e 60 mg L-¹ de óleo de cravo. No entanto, a concentração de 50 mg L-¹ não diferiu estatisticamente dos níveis de 40 e 60 mg L-¹. Quanto à recuperação, o menor tempo foi verificado para a concentração de 20 mg L-¹. O óleo de cravo é eficiente e seguro como anestésico para juvenis de dourado, quando utilizado entre 40 a 60 mg... |
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Palavras-chave: 2.00.00.00-6 Ciências Biológicas eugenol; Espécie nativa; Juvenis; Salminus brasiliensis. eugenol; Native species; Juveniles; Salminus brasiliensis. |
| Ano: 2008 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/485 |
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| GONÇALVES,THAÍS A.P.; NISGOSKI,SILVANA; OLIVEIRA,JULIA S.; MARCATI,CARMEN R.; BALLARIN,ADRIANO W.; MUÑIZ,GRACIELA I.B.. |
| The Brazilian Cerrado is the richest savanna in the world. It is also one of the biomes more threatened in the country and a hotspot for conservation priorities. The main causes of deforestation in Cerrado are agricultural practices, livestock and charcoal production. Although charcoal has a minor impact, its consumption represents the deforestation of 16.000 Km² of the Cerrado. To contribute for the biomes's conservation it is very important to improve forestry supervision. Thus, in this work we present the macroscopic characterization of charcoal from 25 Cerrado's species. We simulate the real conditions of forest controllers by using the magnifications of 10x, 25x and 65x. Likewise, the charcoals micrographs are all of transverse sections due to the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Charcoal anatomy; Nature conservancy; Forest control; Native species. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000301045 |
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| Reyes-Garcia,Luis; Cuevas,Yuri; Ballesteros,Carolina; Curkovic,Tomislav; Löfstedt,Christer; Bergmann,Jan. |
| L. Reyes-Garcia, Y. Cuevas, C. Ballesteros, T. Curkovic, C. Löfstedt, and J. Bergmann. 2014. A 4-component sex pheromone of the Chilean fruit leaf roller Proeulia auraria (Lepidoptera: Tortricidae). Cien. Inv. Agr. 41(2):187-196. The Chilean fruit leaf roller Proeulia auraria is a pest of economically important fruit species. Two compounds attractive to males have been identified as (E)-11-tetradecenyl acetate (E11-14:OAc) and (E)-11-tetradecenol (E11-14:OH) and are currently being used in Chile to monitor this species. Preliminary experiments carried out by our group suggested that the 2-compound mixture might not be optimal for the attraction of males, which prompted us to reinvestigate the sex pheromone of P. auraria in the present study. The pheromone... |
| Tipo: Journal article |
Palavras-chave: Eulia; Euliini; Native species; Sex attractant; Tortricinae. |
| Ano: 2014 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202014000200005 |
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| Santos,Marli da Silva; Miguel,Obdulio Gomes; Petkowicz,Carmen Lúcia Oliveira; Cândido,Lys Mary Bileski. |
| This study aimed to evaluate the antioxidant potential and fatty acid profile of gabiroba (Campomanesia xanthocarpa Berg) seeds. In order to obtain the extract, the seeds were dried, crushed, and subjected to sequential extraction by maceration and percolation in a modified soxhlet extractor using solvent polarity gradient composed of hexane, chloroform, ethyl acetate, and alcohol, respectively. The extraction time was six hours. The ethanol extract showed the highest antioxidant potential, given by the EC50 value and the amount of total phenolic compounds. High amounts of unsaturated fatty acids were found in the oil studied, especially the oleic acid. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Technological use; Native species; Brazilian flora. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612012000200004 |
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| Researchers in conservation biology and restoration ecology often work in partnership with local actors to increase the practical relevance of the knowledge they produce. Although an academic mode of knowledge production is essential in research for a better understanding of biological systems, it often fails to produce frameworks and methodologies having practical relevance that can be used in conservation and restoration programs. The involvement of researchers in collective plans of action is supposed to contribute to the production of a more contextualized form of knowledge. In this paper, we report our experience of partnership research in an ecological restoration project. We show that changing our mode of knowledge production to one that produces... |
| Tipo: Peer-Reviewed Insight |
Palavras-chave: Conservation biology; Genetic resources; Local seeds; Mode of knowledge production; Native species; Problem-finding; Pyrenees; Seed transfer zones; Stakeholders. |
| Ano: 2008 |
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| Ragonha,Flávio Henrique; Pinha,Gisele Daiane; Petsch,Danielle Katharine; Mansur,Maria Cristina Dreher; Takeda,Alice Michiyo. |
| The Ilha Grande National Park, Paraná, Brazil, is located in the Upper Paraná River and has characteristics typical of a floodplains. This protected area includes lagoons connected and disconnected to the Paraná River, although the latter also connect during periods of high water level, thus composing a heterogeneous group of lacustrine environments. The enormous potential the flora and fauna diversities are still little known to the region, as can be seen through benthic invertebrates, inclunding bivalves mollusks. The granulometric composition of these floodplain lagoons was formed mainly by mud and very fine sand. Furthermore, organic matter composition was predominantly of fine particulate. The other abiotic factors differed from lagoons located within... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Floodplains; Lagoons; Native species; Invaders. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212014000100002 |
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| JORGE, M. H. A.. |
| Os interesses do homem em domesticar certos vegetais que fariam parte do seu dia-a-dia, sejam em rituais, sessões de cura, ou até mesmo como parte da sua dieta, estão registrados desde milhares de anos. Estas plantas passaram então por um processo conhecido como seleção, e durante vários anos, foram cultivadas e melhoradas para atender os interesses do homem, no caso de grãos tamanho e número. Atualmente, o homem ainda utiliza a domesticação para muitas espécies que possuem potencial econômico de exploração, seja medicinal, alimentício, verterinário, entre outros. Técnicas mais modernas impulsionaram esse processo de seleção, agilizando assim a condução e obtenção de resultados. Considerando que o Pantanal possui imensa diversidade de plantas que na sua... |
| Tipo: Folhetos |
Palavras-chave: Domesticação; Espécies nativas; Cultivo; Espécies domesticadas; Food; Native species; Cultivation; Domesticated species; Alimento; Pantanal; Domestication. |
| Ano: 2004 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/812063 |
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| CORREIA, D.; SOUSA, J. A. de; VIANA, F. M. P.; MESQUITA, A. L. M.; MIRANDA, F. R. de; NEVES, E. J. M.; WENDLING, I.; SANTOS, A. M.; CARPANEZZI, A. A.; CARVALHO, P. E. R.; ARAÚJO, J. D. M.; NASCIMENTO, E. H. S. do. |
| Tipo: Folhetos |
Palavras-chave: Espécies nativas; Espécies exóticas; Clones de eucalipto; Região litorânea; Preservação; Eucalyptus clones; Coastal region; Exotic species; Native species; Preservation. |
| Ano: 2017 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1085733 |
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| Navarro,Fernanda Keley Silva Pereira; Navarro,Rodrigo Diana; Murgas,Luis David Solis; Pereira,Marina Apocalypse Nogueira; Hundley,Guilherme Crispim. |
| The objective of this work was to evaluate the effect of photoperiod on luteinizing hormone (LH) plasma levels and gonadal maturation of lambari females. One hundred and twenty adult lambaris, distributed into 12 aquaria of 20 L each, were randomly subjected to three different treatments, in a completely randomized design, and four replicates. Treatments were photoperiods in hours of light (L) and darkness (D): T1, 0 L:24 D; T2, 12 L:12 D; T3, 24 L:0 D. After 40 days, fish were subjected to fasting for 24 hours and, then, anesthetized. Immediately after slaughter, fish were weighed, and their gonads and livers were removed and weighed. Ovaries were weighed and immersed in Bouin's fixative solution for 24 hours and, then, kept in 70% alcohol until... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Astyanax bimaculatus; Native species; Gonadosomatic index; Hepatosomatic index; Oogenesis. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013000800039 |
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| Registros recuperados: 33 | |
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