Consulta: subjectFacets:"Emergence"
Registros recuperados: 39
Data/hora: 03/06/2024 07:32:50

Calidad física y fisiológica en semillas de híbridos de maíz de los valles altos centrales de México y su relación con el establecimiento en campo.
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Bustamante Zepeda, Jimena E.
La calidad de las semillas es un elemento de suma importancia para los productores, por tal motivo las pruebas de calidad física y fisiológica son primordiales para estimar eficacia. En el presente estudio se efectuaron dichas pruebas en semillas de 18 híbridos comerciales de maíz de los Valles Altos Centrales de México. Se utilizaron el laboratorio y almaciguero del programa de semillas del Colegio de Postgraduados, además de cuatro localidades del Estado de México. En laboratorio se midieron las variables: porcentaje de germinación al primer conteo, contenido de humedad, peso volumétrico, análisis de pureza, condición del pedicelo, peso de mil semillas y se reclasificó a la semilla en seis tamaños. En almaciguero se sembró semilla en dos condiciones...
Palavras-chave: Calidad; Emergencia; Establecimiento; Germinación; Vigor; Quality; Emergence; Establishment; Germination; Vigor; Maestría; Producción de semillas.
Ano: 2010
URL: http://hdl.handle.net/10521/215

Cambios de acidez en hojas del maguey Agave salmiana Otto Ex Salm-Dyck dependientes de la edad de la hoja y la planta.
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Vázquez Díaz, Erasmo.
Se evaluaron los cambios de acidez titulable cada cuatro horas durante un ciclo de 24 h y la acumulada en el periodo diurno y nocturno de dicho ciclo. Lo anterior de hojas cotiledonares y hojas laterales con edad promedio de uno y hasta cinco meses de las variantes Blanco, Chino y Liso del maguey Agave salmiana de San Luis Potosí, México. Las plantas se obtuvieron a partir de semillas y crecieron en invernadero en el Colegio de Postgraduados en verano y otoño del 2008 y en verano del 2009 sin restricción de humedad y fotoperiodo natural. También se evaluaron las características morfológicas de las semillas de las tres variantes. Se investigo el tiempo y la proporción de la emergencia de la plántula (emergencia de la hoja cotiledonar) y fueron registradas...
Palavras-chave: Agave salmiana; Biomasa; Dimensiones de semilla; Emergencia y desarrollo de la plántula; Acido málico; Acidez titulable; Hojas de maguey; MAC; Seed mass and dimensions; Emergence; Seedling development; Malic acid; Titratable acidity; Maguey leaves; CAM; Maestría; Botánica.
Ano: 2010
URL: http://hdl.handle.net/10521/164

Calidad física y fisiológica en semillas de híbridos de maíz de los valles altos centrales de México y su relación con el establecimiento en campo.
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Bustamante Zepeda, Jimena E.
La calidad de las semillas es un elemento de suma importancia para los productores, por tal motivo las pruebas de calidad física y fisiológica son primordiales para estimar eficacia. En el presente estudio se efectuaron dichas pruebas en semillas de 18 híbridos comerciales de maíz de los Valles Altos Centrales de México. Se utilizaron el laboratorio y almaciguero del programa de semillas del Colegio de Postgraduados, además de cuatro localidades del Estado de México. En laboratorio se midieron las variables: porcentaje de germinación al primer conteo, contenido de humedad, peso volumétrico, análisis de pureza, condición del pedicelo, peso de mil semillas y se reclasificó a la semilla en seis tamaños. En almaciguero se sembró semilla en dos condiciones...
Palavras-chave: Calidad; Emergencia; Establecimiento; Germinación; Vigor; Quality; Emergence; Establishment; Germination; Vigor; Maestría; Producción de semillas.
Ano: 2010
URL: http://hdl.handle.net/10521/215

Cambios de acidez en hojas del maguey Agave salmiana Otto Ex Salm-Dyck dependientes de la edad de la hoja y la planta.
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Vázquez Díaz, Erasmo.
Se evaluaron los cambios de acidez titulable cada cuatro horas durante un ciclo de 24 h y la acumulada en el periodo diurno y nocturno de dicho ciclo. Lo anterior de hojas cotiledonares y hojas laterales con edad promedio de uno y hasta cinco meses de las variantes Blanco, Chino y Liso del maguey Agave salmiana de San Luis Potosí, México. Las plantas se obtuvieron a partir de semillas y crecieron en invernadero en el Colegio de Postgraduados en verano y otoño del 2008 y en verano del 2009 sin restricción de humedad y fotoperiodo natural. También se evaluaron las características morfológicas de las semillas de las tres variantes. Se investigo el tiempo y la proporción de la emergencia de la plántula (emergencia de la hoja cotiledonar) y fueron registradas...
Palavras-chave: Agave salmiana; Biomasa; Dimensiones de semilla; Emergencia y desarrollo de la plántula; Acido málico; Acidez titulable; Hojas de maguey; MAC; Seed mass and dimensions; Emergence; Seedling development; Malic acid; Titratable acidity; Maguey leaves; CAM; Maestría; Botánica.
Ano: 2010
URL: http://hdl.handle.net/10521/164

Emergence Unites Ecology and Society
Provedor de dados: Ecology and Society
Autores: Trosper, Ronald L; University of British Columbia; Ronald.Trosper@ubc.ca.
The effort to combine analysis of ecosystems and social systems requires a firm theoretical basis. When humans are present in an ecosystem, their actions affect emergent structures; this paper examines forms of emergence that account for the presence of humans. Humans monitor and regulate ecosystems based on their cultural systems. Cultural systems consist of concepts linked in complicated ways that can form consistent world views, can contain inconsistencies, and may or may not accurately model the properties of a social&amp;#8211;ecological system. Consequently, human monitoring and regulating processes will differ, depending on cultural systems. Humans, as agents, change or maintain pre-existing material and cultural emergent structures. The...
Tipo: Peer-Reviewed Reports
Palavras-chave: Analytical dualism; Complexity; Critical realism; Ecological economics; Emergence; Social&amp;#8211; Ecological systems; Sustainability.
Ano: 2005

Initial development of lettuce in vermicompost at higher trichoderma doses
Provedor de dados: Horticultura Brasileira
Autores: Wiethan,Maria MS; Bortolin,Gabriel S; Pinto,Renata S; Silva,Antonio Carlos F.
ABSTRACT The study aimed to evaluate the initial development, as well as, the chemical characteristics of lettuce plants grown in substrate with high concentrations of bioagent (trichoderma). A completely randomized design with four replicates was used. The treatments, applied to a substrate composed of a blend of vermicompost and commercial substrate, were established by the following doses of the commercial product ICB Nutrissolo Trichoderma: T1) 0.0; T2) 1.0; T3) 2.0; T4) 4.0; T5) 8.0 and T6) 16.0x1011 conidia kg-1 of product. After inoculation, the substrate was placed in trays, where 50 lettuce seeds were sown on each replication. Plants were thinned after emergency stabilization, maintaining ten seedlings per tray. At 28 days after sowing, the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactuca sativa; Trichoderma spp.; Earthworm; Substrate; Emergence; Growth.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000100077

Broccoli production depending on the seed production system and organic and mineral fertilizer
Provedor de dados: Horticultura Brasileira
Autores: Lopes,José Carlos; Mauri,Janaína; Ferreira,Adésio; Alexandre,Rodrigo S; Freitas,Allan R de.
The experiment was conducted in a greenhouse at the Universidade Federal do Espirito Santo, in Alegre, Espirito Santo state, Brazil, to evaluate the broccoli production depending on the seed production system and organic and mineral fertilization. Seeds of the broccoli cultivar Ramoso Piracicaba were originated from lots of seed obtained in an organic and conventional production system. The experimental design was of randomized blocks, with four replications in a factorial arrangement combination of the lots, 2x5 (organic and mineral fertilized seeds) and substrates [S1 (soil + sand + manure), S2 (soil + sand + manure + NPK), S3 (soil + sand + manure + Fertium® 10 g L-1), S4 (soil + sand + manure + Fertium® 30 g L-1) and S5 (soil + sand + manure + Fertium®...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brassica oleracea var. italica; Emergence; Productivity; Plant nutrition; Substrate.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362012000100024

Emergência e mobilização de reservas de sementes de cupuaçuzeiro na ausência de luz.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: FIGUEIREDO, F. J. C.; ROCHA NETO, O. G. da; CARVALHO, C. J. R. de.
bitstream/item/40516/1/Boletim-Pesquisa-8-CPATU.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Análise da semente; Teste de emergência; Fisiologia da semente; Brasil; Seed testing; Emergence; Seed longevity.; Cupuaçu; Fruta; Iluminação; Teste de Vigor.; Amazonia; Fruits; Lighting.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/377391

Quebra da dormência de sementes de pequi.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: PEREIRA, A. V.; PEREIRA, E. B. C.; SILVA, D. B. da; GOMES, A. C.; SOUSA-SILVA, J. C.
RESUMO: O objetivo deste trabalho foi avaliar os efeitos do tempo de imersão e da concentração de ácido giberélico na quebra de dormência das sementes de diferentes matrizes de pequi. Consistiu em dois experimentos conduzidos em safras distintas: no primeiro, os caroços oriundos da mistura de várias plantas foram submetidos à imersão por dois e quatro dias, em três concentrações de GA3 (0,500 e 1000 mg.dm³). O delineamento experimental foi inteiramente ao acaso, com oito repetições de 50 sementes por parcela, em esquema fatorial 3x2, mais a testemunha constituída de caroços não tratados. O segundo foi conduzido na safra seguinte, sendo os caroços colhidos e mantidos separados por planta-matriz (sete ao todo) e submetidos à imersão por dois e quatro dias em...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Fruta nativa; Indigenous organisms; Emergence; GA.; Ácido Giberélico; Caryocar Brasiliense; Cerrado; Emergência; Germinação; Pequi; Semente.; Germination; Fruits; Seeds.
Ano: 2004
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/569162

Emergência de plântulas de cupuaçuzeiro oriundas de sementes submetidas a estresses térmicos.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: FIGUEIRÊDO, F. J. C.; ROCHA NETO, O. G. da; CARVALHO, C. J. R. de.
bitstream/item/32812/1/CPATU-BP202.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Germinacao de semente; Efeito da temperatura; Efeito da umidade; Teobroma grandiflorum; Belem; Pará; Brasil; Plants; Emergence; Seed; Therapy.; Cupuaçu; Emergência; Plântula; Planta; Tratamento.; Amazonia; Germination; Humidity; Temperature.; Seedlings.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376727

Adiamento da semeadura de sementes de castanha-do-brasil.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: FIGUEIREDO, F. J. C.; CARVALHO, J. E. U. de.
bitstream/item/32015/1/CPATU-BP112.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Castanha-do-brasil; Teor; Qualidade fisiologica; Belem; Pará; Brasil; Brazil nut; Emergence; Vigour; Seed; Seeding; Physiological quality.; Bertholletia Excelsa; Emergência; Semeadura; Semente; Umidade.; Amazonia; Humidity; Vigor.
Ano: 1990
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/381768

Cycle du mercure en estuaire, baie de Seine et pays de Caux
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Laurier, Fabien.
The Seine estuary and its adjacent region Pays de Caux are two significant sources of mercury for coastal marine environments. It is carried through fluvial means for the Seine bay and through karstic fresh water emergences for Pays de Caux's coastal area.  Mercury cycle in the Seine estuary and bay is affected by additional anthropical activities. The estuary's maximal turbidity area acts like a trap and a chemical reactor for fluvial mercury. Within this area, we can confirm: (i) the non conservative behaviour of dissolved mercury; (ii) mercury enrichment of particles when comparing the Seine's and marine environment and we suggest mercury particle redistribution from the organic fraction to the oxyhydroxydes fraction. A large fraction of mercury is...
Tipo: Text
Palavras-chave: Bay of Seine; Pays de Caux; Estuary; Coastal zone; Speciation; Bioavailability; Mercury; Pays de Caux; Seine; Estuaire; Emergence; Zone côtière; Spéciation; Biodisponibilité; Mercure.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/2001/these-1842.pdf

Diagnosis of vibriosis in the era of genomics: lessons from invertebrates
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Le Roux, Frederique.
Global changes linked to increases in temperature and ocean acidification, but also to more direct anthropogenic influences such as aquaculture, have caused a worldwide increase in the reports of Vibrio-associated illnesses affecting humans and also animals such as shrimp and molluscs. Investigation of the emergence of Vibrio pathogenesis events requires the analysis of microbial evolution at the gene, genome and population levels, in order to identify genomic modifications linked to increased virulence, resistance and/or prevalence, or to recent host shift. From a more applied point of view, the elucidation of virulence mechanisms is a prerequisite to devising prophylactic methods to fight infectious agents. In comparison with human pathogens, fairly...
Tipo: Text
Palavras-chave: Écologie; Émergence; Évolution; Invertébrés marins; Vibriose; Virulence; Ecology; Emergence; Evolution; Marine invertebrate; Vibriosis; Virulence.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00344/45560/46722.pdf

Dynamics of benthic copepods and other meiofauna in the benthic boundary layer of the deep NW Mediterranean Sea
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Guidi-guilvard, L. D.; Thistle, D.; Khripounoff, Alexis; Gasparini, S.
A continuous high-resolution time-series survey of the hyperbenthic community and local environmental conditions was conducted in the benthic boundary layer (BBL) of the DYFAMED-BENTHOS station (43 degrees 24.61'N, 7 degrees 51.67'E at 2347 in depth in the NW Mediterranean) between January 1996 and April 1998 using bottom-moored sediment traps and a current meter. Sediment traps were set 4 m above the bottom. Hyperbenthos was collected as 'swimmers', i.e. those organisms that are alive when they enter the traps but are not part of the particle flux. Identification of these organisms showed that similar to 90%, were meiobenthic, Copepods dominated and comprised on average 75%, of total swimmers. They were followed by nauplii (12%), annelids (7.8%),...
Tipo: Text
Palavras-chave: Biodiversity; Population growth; Emergence; Resuspension; Benthic storms; Hyperbenthos; Swimmers; Deep sea.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-7416.pdf

Seasonal and spatial distributions in relation to reproduction of blowflies (Diptera, Calliphoridae) in Hokkaido, Japan
Provedor de dados: Obihiro University of Agriculture and Veterinary Medicine Academic Repository (OAK)
Autores: IWASA, Mitsuhiro; MATSUSHIMA, Kana; INOUE, Ayako; 岩佐, 光啓.
Seasonal and spatial distributions of blowflies in relation to reproduction were investigated by baited traps in eight sites from lowland to high mountainous areas in Hokkaido, Japan. A total of 6,571 blowflies consisting of seven species in three genera was collected. The most predominant species was Calliphora vomitoria (Linnaeus) (5,946 flies, 90.5%), followed by C. nigribarbis Vollenhoven (537 flies, 8.2%). The remaining five species (Triceratopyga calliphoroides Rohdendorf, C. vicina Robineau-Desvoidy, C. loewi Enderlein, C. subalpina (Ringdahl), and Aldrichina grahami (Aldrich) were few in numbers. Calliphora vomitoria had the highest peak in autumn (October) in lowland to upland areas (70 m, 400 m, and 500 m), and it was also abundant from July to...
Palavras-chave: Blowflies; Distribution; Emergence; Hokkaido; Life history; Reproduction.
Ano: 2012
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3843

Remote Sensing and Emergency Management for Coastal Environmental Disasters
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Huh, O.K.
It is estimated that approximately 50% of the worlds population live on the coastal fringes of landmasses and the likely trend is for this number to increase to 75% within a decade. For centuries people have been drawn to coastal regions for the rich soils for agriculture (of deltas and lowlands), the extensive fisheries resources, transportation opportunities and recreation, and just for the natural beauty of living on beachfronts. However, the air-sea-land boundary referred to as the coastal zone is dangerous, comprised of an extremely dynamic, complex physical / biological set of environments. Worldwide, the coastal zone is characterized by high population densities, extremely varied and important biological diversity, including coastal fisheries, rich...
Tipo: Working Paper
Palavras-chave: Remote sensing; Emergence; Coastal environment; Emergency preparedness; Http://aims.fao.org/aos/agrovoc/c_9000044.
Ano: 1998
URL: http://hdl.handle.net/1834/995

Soil Mediated Allelopathic Effect of Echinochloa colona on Germination and Seedling Growth of Zea mays
Provedor de dados: Planta Daninha
Autores: MAJEED,M.A.; TANVEER,A.; TAHIR,M.; AHMAD,R.
ABSTRACT: The soil mediated allelopathic effect of Echinochloa colona (L.) Link (jungle rice) was investigated on seed germination and seedling growth of Zea mays L. (maize). The experiment was conducted in the Agronomy farm of the University of Agriculture, Faisalabad, Pakistan. This study investigated the effect of different concentrations (1, 2, 3, 4 and 5% on w/w basis) of soil incorporated E. colona plant residues on emergence and seedling growth of maize and compared them with residue free soil (control). The results revealed the significant increase with soil incorporated E. colona residues in maize seedling growth till 2% E. colona plant residues, and an inhibitory effect was noticed over 2% E. colona plant residues in comparison to the control...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allelopathy; Emergence; E. colona; Maize; Weed residues; Seedling growth.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100326

Germination Ecology of Two Troublesome Weeds of Arid Chickpea: Euphorbia dracunculoides and Astragalus Species
Provedor de dados: Planta Daninha
Autores: IKRAM,R.M.; TANVEER,A.; ALI,H.H.; SAFDAR,M.E.; JAVAID,M.M.; ABBAS,T.; HASHIM,S.; CHAUHAN,B.S.
ABSTRACT: The species Euphorbia dracunculoides and Astragalus are problematic weeds of arid chickpea in the chickpea mono-cropping system in Pakistan. The influence of various ecological factors on germination and seedling emergence characteristics of these weeds was determined under laboratory conditions. The results suggested that seed germination of both species was 50% at 15 oC under light conditions, and germination decreased when the temperature was increased. The increase in drought stress from 2.5 to 15% significantly decreased germination of E. dracunculoides and Astragalus spp. Both species failed to germinate at the osmotic potential of -3.02 MPa. The increase in field capacity from 25 to 100% increased emergence percentage and emergence index...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Temperature; Burial depth; Light; Management; Emergence; Salinity.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100247

Suppression of Maize (Zea mays) Seedling Growth by Invasive Alligatorweed (Alternanthera philoxeroides) Residues
Provedor de dados: Planta Daninha
Autores: NADEEM,M.; TANVEER,A.; KHALIQ,A.; MURTAZA,G.
ABSTRACT: To investigate the allelopathic influence of soil incorporated plant residues of alligatorweed on emergence and seedling growth of maize (Zea mays), an experiment was conducted under laboratory conditions in the 2014-15 period. The effect of soil amended with whole plant residues of alligatorweed at different concentrations (1, 2, 3, 4 and 5% on w/w basis) was compared with residue free soil (control). Emergence traits, such as emergence percentage, time to 50% emergence, mean emergence time and emergence index were negatively influenced by weed residue incorporation as compared with weed residue free soil. Alligatorweed residues also exerted a pronounced negative influence on root and shoot lengths, root and shoot dry weights and seedling vigor...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Invasive weed; Allelopathy; Emergence; Maize; Weed residues; Seedling growth.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100284

Groundwater Entrepreneurs in China: Selling Water to Meet the Demand for Water
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Zhang,   Lijuan; Wang,   Jinxia; Huang,   Jikun; Rozelle,   Scott.
The overall goal of our paper is to better understand the development of groundwater markets in northern China. In particular, we focus on the factors that determine the development of groundwater markets in our attempt to explain their 'breadth' and 'depth.' Based on a survey of 24 randomly sampled villages and 50 randomly sampled tubewells in two provinces (Hebei and Henan Province) in 2001 and a field survey of 68 randomly sampled villages in 4 provinces (Hebei, Henan, Shanxi, and Shaanxi) of northern China in 2004, our results show that groundwater markets in northern China have emerged and are developing rapidly. Our results show that groundwater markets in northern China are informal and localized. The markets have developed in a way in which they...
Tipo: Conference Paper or Presentation
Palavras-chave: Groundwater markets; Emergence; Characteristics; Determinants; Northern China; Resource /Energy Economics and Policy; O53; Q15; Q25.
Ano: 2006
URL: http://purl.umn.edu/25605

Substrate and seed sowing position on the production of Plukenetia volubilis L. seedlings
Provedor de dados: Revista Brasileira de Engenharia Agrícola e Ambiental
Autores: Jeromini,Tatiane S.; Barbosa,Ana S. V.; Silva,Givanildo Z. da; Martins,Cibele C.
ABSTRACT Plukenetia volubilis is a species native to the Amazonia and has economic potential due to the high contents of polyunsaturated fatty acids and vitamins of the seeds; however, information about production of seedlings in nursery is scarce. Factors that contribute to fast emergence and generation of vigorous seedlings are desirable for plant production in the nursery. Therefore, this study aimed to identify the most favorable substrate and seed position for the production of P. volubilis seedlings. The seeds were sown in the following four positions: hilum facing up, hilum facing down, seed lying on its cotyledon suture, and seed lying flat on one of its cotyledon faces. The substrates were sand, vermiculite and commercial substrate. Treatments...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Emergence; Sacha inchi; Seedlings; Vigor.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000600396

Emergence and biomass accumulation in seedlings of rice cultivars irrigated with saline water
Provedor de dados: Revista Brasileira de Engenharia Agrícola e Ambiental
Autores: Freire,Márcio H. da C.; Sousa,Geocleber G. de; Souza,Maria V. P. de; Ceita,Emanuel D. R. de; Fiusa,Jamili N.; Leite,Kelly N.
ABSTRACT The objective of this study was to evaluate the performance of three rice cultivars under saline water irrigation. The experiment was carried out in full sun at the Experimental Farm of the Unilab, in Redenção, Ceará, Brazil, in January 2016. The experimental design was completely randomized (CRD), in a 5 x 3 factorial scheme [irrigation water electrical conductivity (ECw: 0.5, 1.0, 2.0, 3.0 and 4.0 dS m-1) versus three rice cultivars (C1 - Ligeirinho, C2 - Casado and C3 - Meruinho)], totaling 15 treatments, with 4 replicates of 30 seeds per cultivar. After 21 days, the following variables were evaluated: emergence percentage (EP), emergence speed index (ESI), mean time of emergence (MTE), mean speed of emergence (MSE), shoot dry matter (SDM),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oryza sativa L.; Emergence; Salt stress.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000700471

Differences in larval emergence chronotypes for sympatric Rhagoletis brncici Frías and Rhagoletis conversa (Bréthes) (Diptera, Tephritidae)
Provedor de dados: Revista Brasileira de Entomologia
Autores: Frías-Lasserre,Daniel; S,Andrea Luna; Villagra,Cristian A.
ABSTRACT In central Chile, Rhagoletis brncici and R. conversa, can be found in sympatry, associated with the fruit of their native host plants: Solanum tomatillo and S. nigrum (Solanaceae), respectively. Third-stage larvae must emerge from its host in search of pupation sites, and during this period larvae must find an appropriate pupation microhabitat while avoiding predation and adverse abiotic factors. In this study, we explored whether these sympatric species differ in terms of the timing of their larval exit from the host fruit in search of pupation sites. Field-collected fruits from host plants were checked daily for larval emergence, within 24 h, under laboratory conditions, in order to determine the time of the event. We found that these species...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: R. conversa; R. brncici; Sympatry; Chronotypes; Emergence; Larvae.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262019000300195

Storage of Tabebuia caraiba (Mart.) Bureau seeds in different packaging and temperatures
Provedor de dados: Revista Brasileira de Sementes
Autores: Guedes,Roberta Sales; Alves,Edna Ursulino; Melo,Paulo Alexandre Fernandes Rodrigues de; Moura,Sueli da Silva Santos; Silva,Rosemere dos Santos da.
Tabebuia caraiba (Mart.) Bureau, commonly known as Silver Trumpet Tree is a forestal species, belonging to Bignoniaceae family, which can be utilized as medicinal plant or in landscaping of urban and rural areas; besides producing large mechanical resistance wood. Despite its wide use and ecological importance, basic studies on storages of their seeds are scarce. This way, the objective of this study was to determine the most adequate packaging and the best temperatures, for storing seeds of T. caraiba. For this, seeds were stored in two types of packaging: Kraft paper bags and transparent polyethylene bags; which were then stored during 150 days under three different environments: laboratory normal environment (25±2 °C); cold chamber (8±2 °C); and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Emergence; Vigor; Seed preservation.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222012000300010

The activity time of the lesser bamboo bat, Tylonycteris pachypus (Chiroptera: Vespertilionidae)
Provedor de dados: Revista Brasileira de Zoologia
Autores: Zhang,Li-Biao; Wang,Fu-Min; Liu,Qi; Wei,Li.
The activity time of the lesser bamboo bat, Tylonycteris pachypus (Temminck, 1840), was investigated at two observation locations in southern China: Longzhou and Guiping. Two bouts of activity (post dusk and predawn), with an intervening period of night roosting at diurnal roosts, were identified. The period of activity within each bout was usually less than 30 minutes. The activity periods of individuals belonging to the Longzhou population right after dusk and just before dawn lasted longer than those of the the Guiping population. We also found that the nocturnal emergence time of T. pachypus from the Longzhou population happened earlier than in the Guiping population. These findings indicate that the activity time of T. pachypus was quite short at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Activity period; Emergence; Return; Tylonycteris pachypus.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702015000300201

Overcoming dormancy in seeds of biribá and seedling growth
Provedor de dados: Revista Scientia Agraria Paranaensis
Autores: Coutinho, Pablo Wenderson Ribeiro; Villa, Fabíola; Pires, Ely; Siqueira, Hingrit Mazurek.
The study aimed to evaluate the influence of overcoming dormancy of seeds of biribá through chemical and mechanical method in the emergence and initial growth of seedlings. The fruits were acquired from a mother plant in Cascavel (PR).  The experimental design was a completely randomized in factorial 2 x 3, with four repetition, containing 25 seeds each repetition. The first factor was constituted of scarification with sandpaper n.80 of the two sides opposite the micropyle (with and without), the second factor was the soaking for 24 h (water, GA3 in the concentration of 1000 mg L-1 and without soaking). The count was performed for up to 60 days, being calculated the emergence speed index, average time of emergence and speed of emergence. When the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rollinia mucosa (Jacq.) Baill; Emergence; Sexual propagation; Plant growth regulator.
Ano: 2018
URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/19647

Processing Eucalyptus cloeziana seed lots to improve purity, germination and vigor
Provedor de dados: Scientia Agricola
Autores: Michelon,Thomas Bruno; Vieira,Elisa Serra Negra; Panobianco,Maristela.
ABSTRACT Eucalyptus cloeziana is one of the highest-density wood species offering significant added value, frequently used in the construction and furniture industries. Despite its suitability, it may be overlooked on account of its propagation difficulties due either to its low rooting cutting capacity or to its seeds having a low germination rate perhaps attributable to the high proportion of indistinguishable impurities within the seed lots. This study aimed to develop an efficient technique for Eucalyptus cloeziana seed processing to increase the physical purity and, consequently, the physiological quality of the seed lot. Three seed lots, separated by size in sieves with 1.18, 1.00, and 0.84 mm square openings, were used. X-ray analyses were carried...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eucalypt; Physical purity; Emergence; Seedlings.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000401601

Alternative procedure for the cold test for soybean seeds
Provedor de dados: Scientia Agricola
Autores: Vieira,Bruno Guilherme Torres Licursi; Vieira,Roberval Daiton; Krzyzanowski,Francisco Carlos; França Neto,José de Barros.
The growing demand for high quality soybean [Glycine max (L.) Merrill] seeds requires a precise seed quality control system from the seed industry. One way to accomplish this is by improving vigor testing. Cold test has been traditionally employed for corn seeds. However, it has also been used for other seed crops such as cotton (Gossypium spp.), soybean (Glycine Max), dry bean (Phaseolus vulgaris) and pea (Pisum sativum). This study was carried out with the objective of adjusting an alternative procedure for the cold test to determine soybean seed vigor. Six commercial soybean seed lots of the cultivar BRS 133 were used. The physiological potential of the seed lots was evaluated by germination on paper towel and sand box, seedling field emergence,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max (L.) Merrill; Physiological potential; Emergence; Vigor tests.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000500007

Color polymorphism in Chauliognathus flavipes Fabricius (Coleoptera, Cantharidae): II. Patterns of emergence of morphs and mating system
Provedor de dados: Zoologia
Autores: Machado,Vilmar; Araújo,Aldo Mellender de.
This study presents data on the color polymorphism in Chauliognathus flavipes Fabricius 1781 (Coleoptera, Cantharidae), analysing the variations in the emergence pattern of phenotypic classes for elytra color and mating system. The frequency of the phenotypic classes varies significantly throughout the season (males:X² = 59,705; females: X² = 61,017; 10 gl; p&lt;0.001) being similar in males and females. The frequency of classes does not differ significantly among the insects that were copulating and those that were not copulating at the time of collection, i.e., the matings are random for elytra color patterns. The variations observed in frequency of phenotypic classes are not influenced by factors associated with sex. Furthermore, the elytra color...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Polymorphism; Phenotypic class; Emergence; Assortative mating; Coleoptera.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000200010

Efeito da compactação do solo sobre a semente no desenvolvimento da cultura do feijão - doi: 10.4025/actasciagron.v33i1.4236
Provedor de dados: Acta Scientiarum: Agronomy
Autores: Modolo, Alcir José; UTFPR; Trogello, Emerson; UTFPR; Nunes, Anderson Luis; UFRGS; Silveira, João Cleber Modernel da; IFET Goiano - Campus de Rio Verde - GO; Kolling, Evandro Marcos; UTFPR.
Um dos fatores da baixa produtividade está na dificuldade de se estabelecer a população ideal de plantas por ocasião da semeadura, pelos vários fatores que impedem a germinação normal de parte das sementes. Dentre os fatores primordiais para a germinação estão a umidade, a temperatura e a aeração do solo. É importante citar que estes fatores são diretamente influenciados pelo estado de compactação do solo ao redor da semente. O presente trabalho teve como objetivo estudar os efeitos da combinação entre profundidades de semeadura e cargas aplicadas pela roda compactadora da semeadora-adubadora sobre a emergência e o desenvolvimento da cultura do feijão, em sistema de plantio direto. Foi utilizado o esquema fatorial, no delineamento em blocos ao acaso...
Palavras-chave: 5.01.03.00-8 mecanização agrícola; Semeadura; Emergência. Mecanização Agrícola agricultural mechanization; Sowing; Emergence.
Ano: 2011
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/4236

Morphometric measurements of Africanized honeybee queens kept in an incubator or in queen banking
Provedor de dados: Acta Scientiarum: Animal Sciences
Autores: Metorima, Flávia Nakayama; Costa-Maia, Fabiana Martins; Halak, André Luiz; Parpinelli, Rejane Stubs; Toledo, Vagner de Alencar Arnaut de.
This study aimed to estimate live weight, the length and the width of wing and abdomen and the length, the width and the height of thorax in newly emerged Africanized honeybee queens up to 192 hours and their influence on final quality regarding appropriate storage techniques in queen banking or incubator and to verify the possibility of using these parameters as selection criteria in honeybee breeding programs. Queen honeybees were produced in summer, autumn and winter. The queen production method used throughout the experiments was adapted from Doolittle, and 68 the queens were weighed at emergence. Data were analyzed in R software by regression analysis of queen weight at emergence according to life time after emergence, in two types of storage. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.00.00-2; 5.04.05.02-0 queen size; Emergence; Honeybee breeding; Queen production.
Ano: 2015
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/24006

Effect of different tillage and residue management practices on growth and yield of corn cultivation in Thailand
Provedor de dados: Agricultural Engineering International : The CIGR e-journal
Autores: Sornpoon, Wlaiwan; Jayasuriya, Hemantha P. W.
The tillage and residue management during soil bed preparation need to be in appropriate manner for sustainable farming practice.  The effects of tillage and residue management methods on corn cropping were studied on loamy soil in Bangrakum district, Phitsanulok Province, Thailand.  The effects of five commonly used tillage methods: subsoiler tillage (ST), three methods of conventional tillage (CT1, CT2 and CT3), no-tillage (NT), as main factors and two corn residue management methods; burned (R1) and unburned (R2), as sub-factors were studied in a randomized strip plot configuration.  Tillage treatment showed significant effect on physical and chemical soil properties, plant growth and development, grain yield, total aboveground biomass and most...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural Engineering; Tillage optimization Tillage; No-tillage; Emergence; Compaction; Subsoiler; Biomass.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2235

Effect of salt stress on physiology and agronomy characterstic of barley cultivars
Provedor de dados: Agricultural Engineering International : The CIGR e-journal
Autores: sorkhi, farshad.
In most northwest provinces of Iran such as West Azarbaijan province, soil salinity is a growing problem, particularly in irrigated agricultural areas, and has been found to reduce barley yield, dramatically. To investigate the effect of sodium chloride on two barley (Hordeum vulgare) cultivars, four levels of salinity: 0, 4, 8 and 12 dS/m, were employed as a factorial experiment arranged in a completely randomized design with three replications in a controlled environment of the greenhouse during 2017-2018. The results indicated that increasing salinity from 0 to 12 dS/m, decreased the emergence percentage significantly. Two cultivars of Zarjoo and Valfajr responded differently to salinity, so that Zarjoo showed a significantly higher emergence rate. This...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Emergence; Potassium; Proline; Salinity; Yield components.
Ano: 2020
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5855

Trap nest preference of solitary bees in fragments of the Baturité massif, Atlantic Forest, Brazil
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: GUIMARÃES-BRASIL,MICHELLE O.; BRASIL,DANIEL F.; PACHECO-FILHO,ALÍPIO J.S.; SILVA,CLÁUDIA I.; FREITAS,BRENO M.
Abstract  The study investigated native solitary bee species that nest in pre-existing cavities in the Baturité Massif, State of Ceará, Brazil, their preference for nest substrates and aspects of these bee communities. Samples were taken in four distinct areas of the Baturité Massif using three types of trap-nests: dried bamboo internodes, cardboard tubes and rational boxes. Out of the 185 nests offered, 34 were colonized and 24 of them produced 131 bees, belonging to two families (Apidae and Megachilidae) and five genera (Centris, Mesocheira, Euglossa, Megachile and Coelioxys) from six species, including parasitic ones. Nesting preference was observed to certain types of substrates (χ²=17.89, p&lt;0.001), with bamboo internodes being preferred by bee to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apidae; Emergence; Megachilidae; Trap-nest.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652020000201005

Calling behaviour and evaluation of sex pheromone glands extract of Neoleucinodes elegantalis Guenée (Lepidoptera: Crambidae) in wind tunnel
Provedor de dados: Anais da Sociedade Entomológica do Brasil
Autores: Eiras,Álvaro E.
Adult emergence and mating behavior of Neoleucinodes elegantalis Guenée were studied under laboratory conditions (23 ± 1°C, 12 h photophase and 70% RH). Adult emergence occurred only at scotophase period. Female began to emerge from the 1st hour to 8th hour with a peak occurring at 4th hour of scotophase. Male showed similar trend, but emerging from 2nd to 11th with a peak also at 4th hour of scotophase. Mating was preceded by wing vibration in the male prior to and during walking approach. Mating occurred only during the scotophase period between the 4th and 10th hour of scotophase, with the peak occurring at the 7th hour. Newly emerged N. elegantalis couples rarely mated (2.8%) whereas 48 and 96 h old couples mated 26.3% and 27.5% respectively. Glands...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Tomato-fruit borer; Emergence; Copulation.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80592000000300007

Quality Control of Trichogramma atopovirilia and Trichogramma pretiosum (Hym.: Trichogrammatidae) adults reared under laboratory conditions
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Soares,Marcus Alvarenga; Leite,Germano Leão Demolin; Zanuncio,José Cola; Sá,Veríssimo Gibran Mendes de; Ferreira,Cleidson Soares; Rocha,Silma Leite; Pires,Evaldo Martins; Serrão,José Eduardo.
The objective of this work was to assess the flight capacity, parasitism and emergence of Trichogramma atopoviriliaand two strains of T. pretiosum (Hymenoptera: Trichogrammatidae) (L1 and L2). The flight capacity of these species was assessed in test units consisting of a plastic PVC cylinder with a rigid transparent plastic circle on the upper part and an extruded polystyrene disk closing its bottom. A tube was placed in each test unit containing a card with 300 Anagasta kuehniella (Lepidoptera: Pyralidae) eggs parasitised by Trichogramma. These cards were assessed to determine the parasitism rate and adult emergence of these natural enemies. T. atopovirilia and T. pretiosum L1 presented adequate flight capacity and parasitism, in addition to high...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biological control; Flight; Parasitism; Quality control; Emergence.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000200018

Learning about brain physiology and complexity from the study of the epilepsies
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Garcia-Cairasco,N.
The brain is a complex system, which produces emergent properties such as those associated with activity-dependent plasticity in processes of learning and memory. Therefore, understanding the integrated structures and functions of the brain is well beyond the scope of either superficial or extremely reductionistic approaches. Although a combination of zoom-in and zoom-out strategies is desirable when the brain is studied, constructing the appropriate interfaces to connect all levels of analysis is one of the most difficult challenges of contemporary neuroscience. Is it possible to build appropriate models of brain function and dysfunctions with computational tools? Among the best-known brain dysfunctions, epilepsies are neurological syndromes that reach a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Complex systems; Emergence; Epileptology; Neural networks; E-Neuroscience; Neuroinformatics.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2009000100012

Dormancy overcome and seedling quality of pecan in nursery
Provedor de dados: Ciência Rural
Autores: Poletto,Tales; Muniz,Marlove Fátima Brião; Poletto,Igor; Stefenon,Valdir Marcos; Maciel,Caciara Gonzatto; Rabusque,Jéssica Emilia.
ABSTRACT: This study evaluated the efficiency of methods to overcome seed dormancy in different storage periods in the production of pecan seedlings. Seeds were submitted to the following treatments: T1, T4 and T7 - control treatments (seeds with no treatment, stored at room temperature for 30, 60 and 90 days, respectively), T2, T5 and T8 - stratification (seeds were distributed in boxes with wet sand maintained at a temperature of 4°C for 30, 60 and 90 days, respectively), T3, T6 and T9 - scarification + stratification (seeds scarified with sandpaper n.80 and stratified by 30, 60 and 90 days, respectively), in completely random experimental design. Plant height, stem diameter, number of leaves, full emergence and emergence speed index (ESI) were evaluated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Scarification; Stratification; Emergence; Carya illinoinensis.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001101980

Selectivity of registered pesticides for the corn crop on immature stages of Trichogramma pretiosum (Hymenoptera: Trichogrammatidae)
Provedor de dados: Ciência e Agrotecnologia
Autores: Santos,Tatiele Pereira dos; Menezes,Claubert Wagner Guimarães de; Batista,Carlos Henrique; Brito,Eliane Souza Gomes; Tavares,Wagner de Souza; Zanuncio,José Cola.
ABSTRACT Trichogramma pretiosum Riley, 1879 (Hymenoptera: Trichogrammatidae) is an egg parasitoid of lepidopteran pests in corn, Zea mays L. (Poaceae), in Brazil. Chemical products used in agriculture can be toxic to this biocontrol agent. The objective of the present study was to evaluate the longevity, parasitism and emergence of T. pretiosum parasitizing Mediterranean flour moth, Anagasta kuehniella Zeller, 1879 (Lepidoptera: Pyralidae), eggs treated with herbicide solutions with the active ingredients (chemical group) atrazine (triazines), paraquat dichloride (bipyridylium) and nicosulfuron (sulfonylurea). Pure distilled water was used as a negative control, and a solution of a product with λ-cyhalothrin + thiamethoxam (pyrethroid + neonicotinoid,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biocontrol agent; Emergence; Herbicide; Longevity; Parasitism.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542019000100241