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A Floricaula/Leafy gene homolog is preferentially expressed in developing female cones of the tropical pine Pinus caribaea var. caribaea Genet. Mol. Biol.
Dornelas,Marcelo Carnier; Rodriguez,Adriana Pinheiro Martinelli.
In angiosperms, flower formation is controlled by meristem identity genes, one of which, FLORICAULA (FLO)/LEAFY (LFY), plays a central role. It is not known if the formation of reproductive organs of pre-angiosperm species is similarly regulated. Here, we report the cloning of a conifer (Pinus caribaea var. caribaea) FLO/LFY homolog, named PcLFY. This gene has a large C-terminal region of high similarity to angiosperm FLO/LFY orthologs and shorter regions of local similarity. In contrast to angiosperms, conifers have two divergent genes resembling LFY. Gymnosperm FLO/LFY proteins constitute a separate clade, that can be divided into two divergent groups. Phylogenetic analysis of deduced protein sequences has shown that PcLFY belongs to the LFY-like clade....
Tipo: Info:eu-repo/semantics/article Palavras-chave: LEAFY; Plant reproduction; Development; Gene expression; Flowering.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000200021
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A FÖLDPIAC SAJÁTOSSÁGAI MAGYARORSZÁGON AZ UNIÓS CSATLAKOZÁS IDEJÉN AgEcon
Hamza, Eszter; Misko, Krisztina.
A felmérés tapasztalatai azt mutatják, hogy a magyarországi földpiacon1 ki-várás tapasztalható. Kereslet elsősorban az egyes megyék kiváló és jó minőségű, kedvező fekvésű területei, illetve a nagyobb kiterjedésű, egybefüggő szántók és erdők iránt van. A gyengébb minőségű, kedvezőtlen fekvésű, nehezen megköze-líthető területeken, a zsáktelepülések és az elöregedő falvak környékén túlkínálat jellemző. Nehezen értékesíthetők a beékelődő, szórtan elhelyezkedő, kis méretű, illetve a rendezetlen tulajdonviszonyú (osztatlan közös tulajdonú) területek. Az eladók között nagy számban találhatók megélhetési gondokkal küzdő idősebb, il-letve öröklés, vagy kárpótlás útján földhöz jutott, gazdálkodni nem kívánó tulaj-donosok. A földvásárlók között egyre több tőkeerős...
Tipo: Journal Article Palavras-chave: Földpiac; Földforgalom; Földár; Földbérlet; Termőföld; Land market; Land turnover; Land price; Land lease; Arable land; Agricultural and Food Policy; Land Economics/Use.
Ano: 2005 URL: http://purl.umn.edu/54415
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A forma de aplicação da uréia e dos resíduos vegetais afeta a disponibilidade de nitrogênio Ciência Rural
Ernani,Paulo Roberto; Sangoi,Luís; Lech,Vanderlei Adilson; Rampazzo,Clair.
O método de aplicação dos resíduos vegetais e dos fertilizantes nitrogenados pode afetar as reações do nitrogênio no solo, principalmente no plantio direto. O presente trabalho objetivou avaliar esses efeitos na disponibilidade de N para o milho em dois solos, em casa-de-vegetação. Combinações de métodos (ausência, incorporada ou na superfície) de adição de palha de aveia (0,4kg m-2) e uréia (50mg N kg-1) foram aplicadas em unidades experimentais (7dm³ vaso-1) de dois solos, perfazendo um fatorial 3 x 3 x 2. O milho foi semeado no dia da aplicação dos tratamentos e as plantas foram cultivadas durante trinta dias, sobre um Neossolo e um Nitossolo, respectivamente com 50 e 520g kg-1 de argila e 8 e 48g kg-1 de matéria orgânica. A aplicação de palha de aveia,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Zea mays; Imobilização de N; Mineralização de N; Cobertura do solo.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782005000200017
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A framework for selecting a suite of indicators for fisheries management ArchiMer
Rice, Jake; Rochet, Marie-joelle.
We develop a framework for the objective selection of a suite of indicators for use in fisheries management. The framework encompasses eight steps, and provides guidance on pitfalls to be avoided at each step. Step I identifies user groups and their needs, featuring the setting of operational objectives, and Step 2 identifies a corresponding list of candidate indicators. Step 3 assigns weights to nine screening criteria for the candidate indicators: concreteness, theoretical basis, public awareness, cost, measurement, historic data, sensitivity, responsiveness, and specificity. Step 4 scores the indicators against the criteria, and Step 5 summarizes the results. Steps 3-5 offer technical aspects on which guidance is provided, including scoring standards...
Tipo: Text Palavras-chave: Scoring; Objectives; Indicators; Guidelines; Framework; Ecosystem; Criteria.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/publication-484.pdf
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A Framework for the Economic Analysis of Ditch System Management Alternatives AgEcon
Adachi, Kenji; Apland, Jeffrey; Taff, Steven J.; Sands, Gary.
Replaced with revised version of paper 05/10/06.
Tipo: Working or Discussion Paper Palavras-chave: Land Economics/Use.
Ano: 2005 URL: http://purl.umn.edu/14174
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A Frictionless Marketplace Operating in a World of Extremes AgEcon
Wysocki, Allen F..
Tipo: Journal Article Palavras-chave: Industrial Organization; Marketing.
Ano: 2005 URL: http://purl.umn.edu/93606
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A gene-based radiation hybrid map of chicken microchromosome 14 : comparison to human and alignment to the assembled chicken sequence Inra
Morisson, M.; Leroux, S.; Jiguet-Jiglaire, C.; Assaf, S.; Pitel, F.; Lagarrigue, S.; Bardes, S.; Feve, K.; Faraut, T.; Milan, D.; Vignal, A..
Tipo: Journal Article Palavras-chave: CHICKEN; COMPARATIVE MAPPING; RADIATION HYBRIDS; MICROCHROMOSOME 14; INTRACHROMOSOMAL REARRANGEMENT.
Ano: 2005 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD200756985ee9&uri=/notices/prodinra1/2009/12/
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A General View of the Citrus Sector in Spain AgEcon
Mari, Sergio; Peris, Elena.
Tipo: Journal Article Palavras-chave: Agribusiness.
Ano: 2005 URL: http://purl.umn.edu/26735
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A Generic Four-step Methodology For Institutional Analysis AgEcon
Herrera, Paul A.; Van Huylenbroeck, Guido; Espinel, Ramon L..
The central hypothesis of this paper is that there may be situations in which the traditional approach to institutional analysis is of limited applicability. Such an approach, which has been called 'comparative institutional analysis', consists of comparing institutional environments and institutional arrangements in terms of specific economic or other efficiency criteria to see which one performs better. However, because of limitations to accurately predict the future performance of alternative institutional settings, comparisons are not always possible. Furthermore, in most cases the only information available is the performance of the current institutional setting. To account for this methodological deficiency, a generic methodology for institutional...
Tipo: Conference Paper or Presentation Palavras-chave: New Institutional Economics; Governance structures; Institutional Change.; Institutional and Behavioral Economics; B52; D02; Q25.
Ano: 2005 URL: http://purl.umn.edu/24542
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A genetic marker to separate Emiliania huxleyi (Prymnesiophyceae) morphotypes Marine & Ocean Science
Schroeder, D.C.; Biggi, G.F.; Hall, M.; Davy, J.; Martinez, J.M.; Richardson, A.J.; Malin, G.; Wilson, W.H..
Emiliania huxleyi (Lohm.) Hay and Mohler is a ubiquitous unicellular marine alga surrounded by an elaborate covering of calcite platelets called coccoliths. It is an important primary producer involved in oceanic biogeochemistry and climate regulation. Currently, E. huxleyi is separated into five morphotypes based on morphometric, physiological, biochemical, and immunological differences. However, a genetic marker has yet to be found to characterize these morphotypes. With the use of sequence analysis and denaturing gradient gel electrophoresis, we discovered a genetic marker that correlates significantly with the separation of the most widely recognized A and B morphotypes. Furthermore, we reveal that the A morphotype is composed of a number of distinct...
Tipo: Article Palavras-chave: QH426 Genetics.
Ano: 2005 URL: http://sabella.mba.ac.uk/1330/
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A geological cross-section of the Andean orogen at 25.5°LS IRD
Munoz, J.A.; Amilibia, A.; Carrera, N.; Mon, R.; Chong, G.; Roca, E.; Sabat, F..
Tipo: Text Palavras-chave: GEOLOGIE REGIONALE; GEOLOGIE STRUCTURALE; OROGENESE; PROFIL GEOLOGIQUE.
Ano: 2005 URL: http://www.documentation.ird.fr/hor/fdi:010040297
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A geopolítica da soja na Amazônia. Repositório Alice
ANDRADE, E. B. de.
Neste contexto, o Museu Paraense Emílio Goeldi (MPEG), motivado por recentes posicionamentos e encontros técnico-científicos e discussões na mídia nacional, achou necessário estimular a manifestação articulada das instituições públicas sobre este assunto. Decidiu, então, se unir à Embrapa e à Amigos da Terra para, juntos, organizarem o Seminário Geopolítica da Soja na Amazônia. O debate científico foi pautado na identificação dos caminhos e histórias da expansão da soja, na discussão sobre os principais aspectos agronômicos e ecológicos associados à expansão da soja e aos aspectos fundiários e de gestão do território. Espera-se que este documento, um extrato da inteligência científica sobre o tema apresentado por mais de 16 painelistas e debatedores, sirva...
Tipo: Livro científico (ALICE) Palavras-chave: Soja; Amazônia; Ocupação territorial; Impacto ambiental; Aspecto econômico.
Ano: 2005 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/902551
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A GIS-based inventory of sediment pollution for watershed restoration planning AgEcon
Logan, Joanne; Walker, Forbes R.; Jolly, Brooke A.; Foster, Tiffany.
Under the Clean Water Act, U.S. states are required to establish water quality standards, list impaired waterbodies and create Total Maximum Daily Loads (TMDL) for impaired waters. Sediment contributes greatly to the water impairment in Tennessee, with agriculture often cited as the primary source. The watershed (catchment) in our study, Pond Creek, is listed as impaired for sediment and will require a TMDL and watershed restoration plan in the near future. The Tennessee Valley Authority (TVA) has developed an Integrated Pollutant Source Identification tool, consisting of aerial photographs, GIS database, and set of analysis spreadsheets to help plan watershed restoration efforts. We used this tool to assess sediment delivery from pastures, soil loss from...
Tipo: Journal Article Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2005 URL: http://purl.umn.edu/47960
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A Gis-based isotope map of the central Andes (13°S-28°S) and implications for ore formation IRD
Mamani, M.; Worner, G.; Hartmann, G.; Cassard, D..
Tipo: Text Palavras-chave: SEDIMENT; ROCHE METAMORPHIQUE; ISOTOPE; CARTOGRAPHIE; SYSTEME D'INFORMATION GEOGRAPHIQUE.
Ano: 2005 URL: http://www.documentation.ird.fr/hor/fdi:010040277
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A Global Project for Comparative Farm Analysis: The International Farm Comparison Network IFCN AgEcon
Deblitz, Claus; Hemme, Torsten; Isermeyer, Folkhard; Plessmann, Frank.
Before IFCN was founded, existing farm-level data sets for international comparisons - if there were any - were not comparable. Differences from country to country regarding methodology applied, extent of data sets (physical and financial figures), and availability of up-to-date figures caused the incomparability. The IFCN is a world-wide association of agricultural scientists, advisors and farmers. Within the framework of this co-operation, farms and agricultural production systems are defined that are typical for their regions. Their economic situation is analysed, and the farms can be projected into the future. At present, the network, which is coordinated by the IFCN-centre in Braunschweig, Germany, operates for three branches: dairy (> 30...
Tipo: Conference Paper or Presentation Palavras-chave: Farm comparisons; Typical farms; International competitiveness; International Farm Comparison Network; Farm Management; Institutional and Behavioral Economics.
Ano: 2005 URL: http://purl.umn.edu/24247
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A Globally Flexible, Quadratic Almost Ideal Demand System: An Application for Meat Demand in Taiwan AgEcon
Liu, Kang Ernest; Sun, Chia-Hung.
A new demand system, combining the quadratic almost ideal demand system and the Fourier expenditure system, is introduced. An application for meat consumption in Taiwan indicates that the new demand system fits the data well and that the restriction to the usual specifications, such as locally flexible functional form, linear Engel curve, and both, are rejected.
Tipo: Conference Paper or Presentation Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2005 URL: http://purl.umn.edu/19170
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A grenvillian anorthosite-mangerite-charnockite-granite suite in the basement of the Andes : the llo AMCG suite (southern Peru) IRD
Martignole, J.; Stevenson, R.; Martelat, J.E..
Tipo: Text Palavras-chave: ROCHE METAMORPHIQUE; ROCHE VOLCANIQUE; ANALYSE PETROGRAPHIQUE; GEOCHIMIE; GEOCHRONOLOGIE.
Ano: 2005 URL: http://www.documentation.ird.fr/hor/fdi:010040281
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A Growth-Focused Spatial Econometric Model of Agricultural Land Development in the Northeast AgEcon
Hailu, Yohannes G.; Brown, Cheryl.
Using county data for West Virginia, Maryland, and Pennsylvania, estimation of a system of simultaneous equations shows that population growth, higher taxes, high farmland value, and high initial per capita income accelerate farmland development, but return on farmland, government assistance to farmers, farmland conservation, and farming agglomeration reduce development pressure.
Tipo: Conference Paper or Presentation Palavras-chave: Farmland; Development; Regional growth; Policy; Equilibrium model; Spatial autocorrelation; Land Economics/Use.
Ano: 2005 URL: http://purl.umn.edu/19488
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A HAZAI ÖKOMÉZ PIACI LEHETŐSÉGEI AgEcon
Panyor, Agota.
A kérdőíves felmérésből megállapítható, hogy rendkívüli fontosságú az ökoméz és a hagyományos technológiával készült méz közötti különbség tudatosítása, melyben fontos szerepet játszik a marketingeszközök megfelelő és hatékony alkal-mazása, többek között a különböző kiadványok és reklámok. Fontos cél, hogy a magyar fogyasztó részesítse előnyben a hazai terméket, tudja és érezze át, hogy a magyar élelmiszer vásárlásával segíti a hazai vidéki lakosság megélhetését, az ökoélelmiszer választásával védi a természeti környezetet és a saját egészségét. A 2081/92/EGK rendelet szerinti közösségi oltalom (eredetvédelem) lehetőségét célszerű lenne kihasználni a termelői csoportosulások aktív közreműködésével. Nagy figyelmet indokolt szentelni a fiatal generációk...
Tipo: Journal Article Palavras-chave: Kérdőíves felmérés; Eredetvédelem; Ökotermék védjegy - questionnaire survey; Community protection; National brand-mark for eco-products; Agricultural and Food Policy; Food Security and Poverty; Health Economics and Policy; Marketing.
Ano: 2005 URL: http://purl.umn.edu/54308
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A Hedonic Analysis of Sheep and Goat Prices in a Changing Environment: The Role of Consumers and Implications for Management AgEcon
Singh-Knights, Doolarie; Smith, Dennis K.; Knights, Marlon.
This paper examines whether buyers of live lambs and goats in the Northeast region have systematic preferences for specific live product attributes (age, weight, market class, sales lot size, market location and timing of sale) and whether they pay significantly different prices for these attributes consistent with their preferences. Non-linear hedonic models are estimated using auction price and quality data for live lambs and goats in specific Northeast markets. The results indicate that both lamb and goat buyers have systematic preferences for specific weight, market class and timing of sale, and that these preferences are implicitly reflected in prices offered in traditional auction markets. Producers can capitalize on price differences based on...
Tipo: Conference Paper or Presentation Palavras-chave: Institutional and Behavioral Economics.
Ano: 2005 URL: http://purl.umn.edu/19289
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