SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

LEAO, P. C. de S.; MAIA, J. D. G..

A producao de uvas finas de mesa requer bastante conhecimento tecnico para a execucao dos tratos culturais indispensaveis a obtencao de frutas de qualidade. Na maioria dos casos, as operacoes manuais exigem grande habilidade, ja que, se forem executadas erroneamente, podem causar danos irreparaveis a producao. A poda, em virtude da sua importancia na formacao das plantas e na manutencao do equilibrio entre vegetacao e frutificacao, assume especial importancia na viticultura tropical. Por outro lado, as operacoes de verao, como desbrotas, desfolhas, desponte, desbate dos cachos e raleio das bagas, tambem constituem-se praticas especificas desta viticultura, merecendo a abordagem tratada neste artigo.

Climate effects on physicochemical composition of Syrah grapes at low and high altitude sites from tropical grown regions of Brazil.

Palavras-chave: Uva de mesa; Cultivo; Manejo; Regiao tropical; Grape; Vitis vinifera; Tropical region; Uva; Grapes.

Ano: 1998

URL: http://www.alice.cnptia.embrapa.br/handle/doc/133464

OLIVEIRA, J. B. de; EGIPTO, R.; LAUREANO, O.; CASTRO, R. de; PEREIRA, G. E.; RICARDO-DA-SILVA, J. M..

The major areas of the world where viticulture is practiced enjoy temperate or cool temperature climates. When wine grapes are grown in tropical regions, edaphoclimatic factors result in distinct grape quality attributes, and production techniques also require significant adjustment. The objective of this study was to characterize the chemical compositions, in particular of phenolic compounds, of Syrah grapes grown in two location in northeast Brazil - these are also at widely different altitudes. A range of methods of phenolic extraction were used, along with classical chemical analyses including for organic acids, sugars, monomeric anthocyanins, flavonols, stilbene, condensed tannins and some of the monomeric and small oligomeric procyanidins. The...

Coleta e preservacao de especies frutiferas tropicais nativas e exoticas em Pernambuco.

Palavras-chave: Organic acids; Tropical region; Vitis vinifera L; Phenolic compounds; Sugars.

Ano: 2019

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1118402

Diversity and distribution Patterns of the infralittoral green macroalgae from Potiguar basin, Rio Grande do Norte, Northeastern Brazil

BEZERRA, J. E. F; LEDERMAN, I. E.; PEDROSA, A. C.; DANTAS, A. P.; GONZAGA NETO, L.; PEREIRA, R. de C. A.; MELO NETO, M. L. de.

Apresentam-se os principios que nortearam a identificacao das areas de ocorrencia e a coleta de germoplasma de fruteiras tropicais nativas e exoticas, a saber: araca-comum, caja, caja-umbu, carambola, ciriguela, jaca, piqui, pitanga, pinha e umbu. Os bancos de germoplasma de araca-comum, carambola, ciriguela, jaca, jaboticaba, pitanga e umbu ja se encontram instalados nos Campos Experimentais da Empresa- IPA, e das demais especies esperam a epoca oportuna de plantio. Expoe-se tambem uma descricao sucinta de cada uma das especies em estudo, incluindo as caracteristicas fisicas e quimicas dos frutos coletados das selecoes.

Tipo: Artigo em anais de congresso (ALICE)

Palavras-chave: Regiao tropical; Pernambuco; Tropical fruit; Tropical region; Tropical fruits; Fruta; Fruta Tropical.

Ano: 1990

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/131618

Acta Botanica

Cocentino,Adilma de Lourdes Montenegro; Fujii,Mutue Toyota; Reis,Thiago Nogueira de Vasconcelos; Guimarães-Barros,Nathalia Cristina; Rocha,Marcia de França; Neumann-Leitão,Sigrid.

Diversity and distribution pattern of the infralittoral green macroalgae at Potiguar basin, Rio Grande do Norte, Northeastern Brazil were analyzed from material collected at depths varying from 2 to 100 m. Collections were carried out with two types of dredges during four campaigns: July 2002, May and November 2003 and May 2004 at 43 stations. Chlorophyta is represented by 54 species, five varieties and three forms. The most representative family is Caulerpaceae, and the most diverse genus is Caulerpa, with 11 species. The results showed that most taxa (89%) are rare, and 10% are present at low frequencies. The most frequent species was Caulerpaprolifera (Forssk.) J.V. Lamour. occurring at almost all coastal and inner shelf stations, recorded in all...

Fatores do ambiente sobre o peso ao desmame de bezerros da raca Nelore em regioes tropicais brasileiras.

Palavras-chave: Distribution patterns; Green macroalgae; Infralittoral; Tropical region; Brazil.

Ano: 2010

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062010000400014

SOUZA, J. C. de; RAMOS, A. de A.; SILVA, L. O. C. da; EUCLIDES FILHO, K.; ALENCAR, M. M. de; WECHSLER, F. S.; FERRAZ FILHO, P. B..

Este trabalho teve o objetivo de estudar a influencia de efeitos nao geneticos sobre o peso ao desmame de 105.465 bezerros da raca Nelore, nascidos em oito diferentes regioes brasileiras, no periodo de 1978 a 1994. A analise estatisticas foi realizada utilizando-se o metodo dos quadrados minimos, procedimentos GLM (SAS. 1996), com um modelo estatistico contendo como fontes de variacao os efeitos fixos de sexo, mes e ano de nascimento do bezerro, regiao, fazenda dentro de regiao, grupo de idade da vaca e, como efeitos aleatorios, touro e o erro. Todas as fontes de variacao do modelo foram significativas (P<0,0001). A importancia desses efeitos nao geneticos sobre o peso aos 205 dias de idade de bezerros da raca Nelore evidenciam a necessidade de se fazer...

Limnological characteristics and seasonal changes in density and diversity of the phytoplanktonic community at the Caçó pond, Maranhão State, Brazil

Palavras-chave: Bovino de corte; Nelore; Ambiente; Regiao tropical; Brasil; Tropical region; Bezerro; Desmama; Peso; Nellore; Brazil; Beef cattle; Calves; Environmental factors; Weaning weight.

Ano: 2000

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/323702

BABT

Dellamano-Oliveira,Maria José; Senna,Pedro Américo Cabral; Taniguchi,Glória Massae.

Seasonal changes of the phytoplanktonic community and limnological abiotic characteristics of Caçó pond (Maranhão State, Brazil) was evaluated from two field researches during the rainy (April 1999) and dry (November 1999) seasons. Measurements of twelve chemical and physical variables and phytoplankton collections were carried out at eight sampling stations. The Chlorophyceae and Cyanobacteria groups were in highest fractions during the rainy and dry seasons, respectively. The limnological abiotic variables showed a homogenous spatial distribution. The cluster analysis, using Bray-Curtis distance, distinguished two major groups, represented by the most common and abundant species in both the periods. The results showed that the climate regime, due to the...

Macroinvertebrates associated with bryophyta in a first-order Atlantic Forest stream

Palavras-chave: Seasonality; Phytoplankton; Diversity; Tropical region.

Ano: 2003

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000400019

Rev. Bras. Zool.

Rosa,Beatriz F. J. V.; Silva,Marcos V. D. da; Oliveira,Vívian C. de; Martins,Renato T.; Alves,Roberto da G..

This study describes the composition and structure of the benthic community associated with bryophytes in a first-order stream, located in a biological reserve of the Atlantic Forest, during two seasons. During three months of the dry season of 2007 and three months of the rainy season of 2008, samples of bryophytes attached to stones were collected randomly, along a 100 m stream reach. The structure of the community was analyzed through the mean density of individuals, Shannon's diversity index, Pielou's evenness, family richness, dominance index, and the percentage of Ephemeroptera, Plecoptera and Trichoptera (% EPT). Chironomidae larvae were dominant in the two periods of study, followed by Ceratopogonidae in the rainy season, and Naididae in the dry...

Multitemporal spectral mixture analysis for Amazonian land-cover change detection.

Palavras-chave: Aquatic insects; Lotic systems; Tropical region.

Ano: 2011

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000300009

LU, D.; BATISTELLA, M.; MORAN, E..

The complex landscape and environmental conditions in the moist tropical region often result in poor land-cover change detection accuracy using traditional change detection methods. This paper explores linear spectral mixture analysis (LSMA) of multitemporal thematic mapper (TM) images to detect land-cover change in Rondônia, Brazilian Amazon basin. Three image endmembers (shade, green vegetation, and soil) were developed based on a combination of field data and image scatterplots. An unconstrained least-squares solution was used to unmix the multitemporal TM images into three fractions. Then, fraction image differencing results were used to analyze land-cover change/non-change detection. The detailed ?from-to? change detection was implemented using a...

Occurrence and distribution of larval lanternfish (Myctophidae) from the southwest Atlantic Ocean

Palavras-chave: Tropical region; Remote sensing.

Ano: 2004

URL: http://www.alice.cnptia.embrapa.br/handle/doc/994980

Rev. Bras. Zool.

Castro,Márcia S. de; Richards,William J.; Bonecker,Ana Cristina T..

This study analyzes the occurrence and distribution of lanternfish (Myctophidae) larvae along the Brazilian coast (12-22ºS) between 200 m and the surface. Three cruises were conducted during the spring/1998, winter/1999 and autumn/2000. A total of 3,394 lanternfish larvae were identified representing 27 species and Lepidophanes guentheri (Goode & Bean, 1896) was the most abundant. Most of the identified taxa were in the postflexion stage. Myctophid larvae were more numerous during the winter. Most taxa were distributed widely from 12-22ºS, including some seamounts, and occurred mainly outside the 1,000 m isobath. Although there was no difference in the myctophid community among the coastal, oceanic and seamount regions it was significantly...

Os recursos geneticos nos tropicos: o caso das plantas cultivadas por sementes.

Palavras-chave: Brazilian coast; Larval mesopelagic fish; Myctophidae; Spatial variation; Tropical region.

Ano: 2010

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000400006

Patterns of spatial distribution in macroalgal communities from tropical lotic ecosystems

QUEIROZ, M. A. de..

bitstream/item/90552/1/Digitalizar0021.pdf

Tipo: Artigo em anais de congresso (ALICE)

Palavras-chave: Semente; Planta; Regiao tropical; Genetic resource; Seed; Plant; Tropical region; Recurso genético; Genetic resource.

Ano: 1992

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/132930

Rev. Bras. Bot.

Borges,Fábio R.; Necchi Júnior,Orlando.

Three sampling sites were analysed in each of the following tropical regions: 1) northwestern São Paulo State, representing a disturbed region; 2) Bonito, Mato Grosso do Sul State, representing a hard water region; and 3) Ubatuba, northern costal region of São Paulo State, a well preserved tropical rainforest region. The hard water region had the highest mean values for macroalgal species richness (6.3) and diversity index (H' = 0.62). Northwest and rainforest regions had the highest percent cover values (22.5% and 17.0%, respectively). All sites in the northwest region had one or two dominant species (percent cover significantly higher than the remaining species), characterizing the niche pre-emption distribution pattern. The same pattern was found in two...