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Registros recuperados: 7
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Age-dependent biological characteristics of embryonal mass of maritime pine in relation to the embryogenic potential Inra
Klimaszewska, K.; Noceda, C.; Pelletier, G.; Label, P.; Rodriguez, R.; Lelu-Walter, M.A..
Somatic embryogenesis (SE) in conifers is at the base of nearly allbiotechnology products that potentially might be developedincluding transgenic trees. SE is a powerful tool for clonalpropagation that has opened avenues for deployment of superiorclonally replicated planting stock in forest plantations. Althoughthe SE process can be managed for high efficiency there are stillseveral problems that require better understanding of underlyingcauses. One phenomenon, which occurs after the long-termculture of embryogenic tissue, particularly of pines, is the loss ofability to produce mature somatic embryos and consequentlyplants. Such unproductive cultures must be replaced, which is bothexpensive and undesirable. In an attempt to get an insight into...
Tipo: Meeting Paper Palavras-chave: MASSE EMBRYONNAIRE; EMBRYON SOMATIQUE; METHYLATION DE l'ADN EMBRYONAL MASS; SOMATIC EMBRYO; DNA METHYLATION; MARITIME PINE.
Ano: 2006 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2008b2b6654e&uri=/notices/prodinra1/2008/11/
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Agicultural development and trade liberalization Frontis
Rodriguez, R..
Agriculture represents in Brazil roughly one third of GDP; a quarter of employment and 42% of exports. During the last 15 years, the cultivated area increased with 24%, but production more than doubled. Much attention is given to innovation in new technologies, fertilizers and agrochemicals for enhancing productivity. Supply in the agribusiness sector is continuously increasing, and Brazil has become a major exporter of coffee, sugar, soybeans and meat to the EU, US and Asian markets. Even while there is still some room for expansion, it is recognized that most of future agricultural growth must come from productivity improvement. Open markets are in the benefit of their consumers, but countries are entitled to maintain some subsidies for environmental and...
Tipo: Conference proceedings
Ano: 2006 URL: http://library.wur.nl/ojs/index.php/frontis/article/view/969
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Biological characterization of young and aged embryogenic cultures of Pinus pinaster (Ait.) Inra
Klimaszewska, K.; Noceda, C.; Pelletier, G.; Label, P.; Rodriguez, R.; Lelu-Walter, M.A..
Pinus pinaster (Ait.) somatic embryogenesis (SE) has been developed during the last decade, and its application in tree improvement programs is underway. Nevertheless, a few more or less important problems still exist, which have an impact on the efficiency of specific SE stages. One phenomenon, which had been observed in embryogenic tissue (embryonal mass, EM) initiated from immature seed, has been the loss of the ability to produce mature somatic embryos after the tissue had been cultured for several months. In an attempt to get insight into the differences between young cultures of EM (3-mo-old since the first subculture) of P. pinaster that produced mature somatic embryos and the same lines of significantly increased age (18-mo-old, aged EM) that...
Tipo: Journal Article Palavras-chave: EMBRYOGENESE SOMATIQUE; MATURATION DE L'EMBRYON SOMATIQUE; CHANGEMENT BIOCHIMIQUE; METHYLATION DE L'ADN; HORMONE ENDOGENE SOMATIC EMBRYOGENESIS; SOMATIC EMBRYO MATURATION; BIOCHEMICAL CHANGE; DNA METHYLATION; ENDOGENOUS HORMONE; MARITIME PINE.
Ano: 2009 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2008454303df&uri=/notices/prodinra1/2009/03/
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Estratigrafia y tectonica de la parte sur de la cuenca de Ayaviri IRD
Ibarra, I.; Mamani, M.; Rodriguez, R.; Sempéré, Thierry; Carlotto, V.; Carlier, Gabriel.
Tipo: Text Palavras-chave: STRATIGRAPHIE; TECTONIQUE; GEOLOGIE STRUCTURALE; BASSIN SEDIMENTAIRE; OLIGOCENE; MIOCENE; FAILLE; MAGMATISME; COMPRESSION TECTONIQUE; ALTIPLANO.
Ano: 2004 URL: http://www.documentation.ird.fr/hor/fdi:010036857
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Politicas agrarias y estrategias campesinas en la Cuenca del Canete : anexos 8 a 13 IRD
Hervé, Dominique; Huerta, A.; Rousseau, Philippe; Cavero E., L.; Rodriguez, R.; Munoz, M.L..
Ce document réunit plusieurs diagnostics établis à partir d'observations de terrain sur la géographie physique, l'organisation sociale, les pratiques paysannes dans la vallée de Canete et la vallée Pampas afin de déterminer les facteurs limitants de la production et des pratiques culturales , notamment en matière d'irrigation.
Tipo: Text Palavras-chave: DEVELOPPEMENT RURAL; SYSTEME DE CULTURE; PRATIQUE CULTURALE; INTENSIFICATION DE L'AGRICULTURE; PRODUCTIVITE AGRICOLE; UTILISATION DU SOL; EROSION; IRRIGATION; ORGANISATION SOCIALE; COMMUNAUTE VILLAGEOISE; POMME DE TERRE; FRUIT; MAIS; EVALUATION; ETUDE REGIONALE; MICROREGION; STRATEGIE PAYSANNE.
Ano: 1988 URL: http://www.documentation.ird.fr/hor/fdi:31662
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Sistemas transcurrentes de escala litosferica en el sur de Peru IRD
Sempéré, Thierry; Jacay, J.; Carlotto, V.; Martinez, W.; Bedoya, C.; Fornari, Michel; Roperch, Pierrick; Acosta, H.; Acosta, J.; Cerpa, L.; Flores, A.; Ibarra, I.; Latorre, O.; Mamani, M.; Meza, P.; Odonne, F.; Oros, Y.; Pino, A.; Rodriguez, R..
Tipo: Text Palavras-chave: GEOLOGIE STRUCTURALE; TECTONIQUE; LITHOSPHERE; MAGMATISME; FAILLE; OROGENESE; INTRUSION; OLIGOCENE.
Ano: 2004 URL: http://www.documentation.ird.fr/hor/fdi:010036851
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Stratigraphy of the northeastern edge of the mesozoic Arequipa basin, southern Peru IRD
Rodriguez, R.; Cuellar, E.; Sempéré, Thierry.
Tipo: Text Palavras-chave: STRATIGRAPHIE; ROCHE VOLCANIQUE; SABLE; MESOZOIQUE; PROFIL GEOLOGIQUE.
Ano: 2005 URL: http://www.documentation.ird.fr/hor/fdi:010040317
Registros recuperados: 7
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