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| Registros recuperados: 789 | |
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| FREIRE, E. C.; FARIAS, F. J. C.; CARVALHO, L. P. de; ANDRADE, F. P. de; ARANTES, E. M.; OLIVEIRA, L. C. de; BOLDT, A. F.; FERRAZ, C. T.; RAMALHO, A. R.; MORESCO, E. R.; SOUZA, M.. |
| Para apoiar a cotonicultura nas regiões Centro-Oeste e Noroeste, a Embrapa Algodão, com o objetivo de desenvolver cultivares adaptadas as condições edafoclimáticas das regiões e sua avaliação frente a materiais introduzidos de outras regiões do Brasil ou do Exterior. |
| Tipo: Comunicado Técnico (INFOTECA-E) |
Palavras-chave: Genotypes.; Linhagem; Algodão; Gossypium hirsutum; Variedade; Melhoramento; Comportamento de variedade; Genótipo; Produtividade.; Cotton; Breeding; Varieties.. |
| Ano: 1997 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/269540 |
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| VARGAS RAMOS, V. H.; PINTO, A. C. de Q.; JUNQUEIRA, N. T. V.; GOMES, A. C.; ANDRADE, S. M. R. de; CORDEIRO, M. C. R.. |
| RESUMO: A seleção de porta-enxertos para nanismo tem sido um aspecto importante no programa de melhoramento de manga na região do Brasil Central. As cultivares de manga para exportação Tommy Atkins e Haden, embora produtivas, com frutas de coloração excelente e polpa sem fibras são vigorosas e de porte elevado, o que dificulta os tratos culturais e colheita. O objetivo deste trabalho foi estudar o efeito de copas e porta-enxertos no crescimento da planta, no rendimento e na qualidade dos frutos da manga. O experimento foi implantado em novembro de 1990 numa área de 4,0 ha. O delineamento experimental foi o de blocos ao acaso, em parcelas subdivididas, com três repetições, sendo avaliados oito porta-enxertos nas parcelas e quatro nas copas nas subparcelas.... |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: Mango; Grafting; Dwarfism.; Enxerto; Mangifera Indica; Manga; Nanismo; Melhoramento; Porta Enxerto; Propagação Vegetativa; Reprodução Assexuada; Variedade.; Asexual reproduction; Breeding; Plant propagation; Rootstocks; Varieties.. |
| Ano: 2003 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/568053 |
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| Degremont, Lionel; Boudry, Pierre; Bedier, Edouard; Ropert, Michel; Soletchnik, Patrick; Huvet, Arnaud; Moal, Jeanne; Samain, Jean-francois. |
| The French project "Morest", coordinated by IFREMER, aims to understand the causes of the summer mortalities in Crassostrea gigas. In 2001, three sets of families were bred following a nested half-sib mating design. 17 half-sib families (HSF) were obtained in this first generation (G1) and reared in 3 sites. Significant differences in survival were observed among HSF, and some HSF showed high levels of mortality in all sites, clearly indicating a genetic basis for survival. In 2002, a second generation (G2), including divergent selection and inbred lines, was constituted. Monitoring of survival and growth of G2s were the same as in 2001. Significant differences in survival were found between the offspring of the "high" and "low" selected groups and between... |
| Tipo: Text |
Palavras-chave: Summer; Oyster culture; Juveniles mortality; Genetics; Commercial species; Breeding. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/2003/acte-3346.pdf |
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| Vandeputte, Marc. |
| Common carp was the first domesticated fish species and is now a major species in worldwide aquaculture. Although research has generated a considerable body of knowledge about its genetics, genetic improvement programmes are virtually non-existent in this species and only crossbreeding is used in practice. The main reasons are the inefficiency of methods usually effective in other aquaculture species (monosexing, triploidy), and the bad image of selective breeding which is difficult to implement in ponds, and for which reliable genetic parameters were missing until recently. These parameters are now becoming available through the use of parentage assignment with microsatellite markers. However, the question of selective breeding for growth remains far from... |
| Tipo: Text |
Palavras-chave: Selection; Population genetics; Cyprinus carpio; Breeding; Aquaculture. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-6563.pdf |
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| IFREMER. |
| La situation épidémiologique due à Bonamia ostreae n'a pas évoluée au cours de 1985. Les élevages réalisés dans le cadre du plan de relance ont confirmé la très faible propagation du parasite,en eau profonde, jusqu'à l'âge de deux ans. Des résultats encourageants ont également été obtenus avec des huîtres plus âgées. Les essais d'acclimatation effectués avec Ostrea angasi ont permis de constater la réceptivité de cette huître aux deux Protozooses mais également sa sensibilité à une Haplosporidie. L'étude de cette dernière et d'une Haplosporidie sp. trouvée chez des huîtres plates de Méditerranée a été réalisée en microscopie électronique. Les techniques d'isolement et de purification de Marteilia refringens ont été adaptées à d'autres Protozoaires. Des... |
| Tipo: Text |
Palavras-chave: Ostréa edulis; Pathologie; Elevages; Acclimatation; Ostrea edulis; Pathology; Breeding; Acclimatation. |
| Ano: 1985 |
URL: http://archimer.ifremer.fr/doc/00102/21328/18951.pdf |
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| Chatain, Beatrice; Chavanne, Herve. |
| The production of sea bass, a major species in Mediterranean fish farming, still relies in many cases on the production of fingerlings issued from wild breeders. Still, genetic improvement is a major key to sustainable development for all optimized forms of animal production. Three types of genetic improvement can be acheived in fish: i) the production of monosex populations. For seabass, monosex female populations would be the objective as females grow 20-30% faster than males. However, sex determination in this species is complex, impacted by both genetic and environmental factors. Hence, production of monosex populations is not yet a routine operation, although in some cases almost 100% female batches have been obtained; ii) chromosome set... |
| Tipo: Text |
Palavras-chave: Sea fishes; Population genetics; Mediterranean zone; Fish culture; Dicentrarchus labrax; Breeding. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-6562.pdf |
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| Alayse, J.p.; Lahaye, J.. |
| The experimental unit used previously in our laboratory for the study of the effect of the photoperiod on the growth of flatfish was based on the use of tanks with separate recirculation systems. We modified it, connecting the different tanks to a single, more powerful recirculation system. This new unit comprised four different parts s - a biological filtar and an ultraviolet sterilizer. - a gravity operated water distribution system. - a series of 12 rearing tanks. - a piping system connecting the tank outlets to the biological filter. The total volume of the unit was 8 900 l. 200 l were changed every week. The main advantages of this new unit was that the quality of the water supplied to all tanks could be exactly the same, and that various parameters... |
| Tipo: Text |
Palavras-chave: Circuit fermé; Élevage; Sole; Closed system; Breeding; Sole. |
| Ano: 1979 |
URL: http://archimer.ifremer.fr/doc/00305/41664/40873.pdf |
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| Registros recuperados: 789 | |
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