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| Registros recuperados: 144 | |
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| SOARES, D. J.. |
| O mofo-cinzento da mamoneira é uma das doenças econômicamente mais importantes desta cultura e, quando sob condições favoráveis, pode resultar em elevadas perdas de produção. Pouco se conhece sobre o comportamento de híbridos comerciais de mamoneira frente a essa doença. Os híbridos AG-IMA, AKB-02, MIA e TAMAR foram avaliados quanto a sua reação ao mofo-cinzento, em condições controladas, utilizando-se a técnica de frutos destacados. Com base nos resultados obtidos no presente estudo, os híbridos AKB-02, MIA e TAMAR foram considerados altamente suscetíveis e o híbrido AG-IMA foi considerado suscetível. Dessa forma, uma vez que todos os materiais avaliados foram considerados suscetíveis, a pulverização preventiva com fungicidas continua sendo essencial para... |
| Tipo: Folhetos |
Palavras-chave: Mamona; Ricinus Communis; Fungo; Mofo Cinzento; Resistência; Doença de Planta; Doença Fúngica; Planta Oleaginosa; Disease resistance; Castor beans. |
| Ano: 2022 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1146569 |
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| Medeiros,José Gilberto Sousa; Citadin,Idemir; Santos,Idalmir dos; Assmann,André Paulo. |
| Bacterial leaf spot (BLS), caused by Xanthomonas arboricola pv. pruni, is one of the most important diseases in Brazilian peach [Prunus persica (L.) Batsch] orchards and all over the world. The main objective of this study was to evaluate for BLS sensitivity of peach genotypes. Evaluations of thirty genotypes were carried out during the onset of the disease, for incidence, severity and defoliation, in field conditions. Pearson's correlations between the percentage of defoliation and leaf severity rating were performed. Genotypes 'Conserva 985', 'Conserva 871', 'Conserva 1129', and 'Tropic Snow', as resistance sources, and 'Conserva 1153', 'Bonão', 'Conserva 1125', and 'Atenas', as susceptible to BLS, were submitted to detached-leaf bioassay and greenhouse... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Disease resistance; Disease severity. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000100009 |
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| Felipe,Rafaella Teles Arantes; Mourão Filho,Francisco de Assis Alves; Lopes,Silvio Aparecido; Mendes,Beatriz Madalena Januzzi; Behling,Maurel; Pereira Junior,Ernani Vicente. |
| The objective of this work was to evaluate the reaction of four sweet orange cultivars expressing the attacin A gene to 'Candidatus Liberibacter asiaticus' (Las) infection, a bacterium associated to huanglongbing (HLB) disease. Transgenic sweet orange plants of Hamlin, Natal, Pêra, and Valência cultivars, as well as nontransgenic controls received inocula by grafting budwood sections of HLB-infected branches. Disease progression was evaluated through observations of leaf symptoms and by polymerase chain reaction (PCR) analysis, eight months after inoculation. A completely randomized design was used, with four experiments (one for each cultivar) performed simultaneously. Bacteria title was estimated by quantitative PCR (qPCR). HLB symptoms and Las titers... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrus sinensis; Antibacterial peptide; Disease resistance; Genetic transformation; Huanglongbing. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013001100004 |
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| SHARMA, R. D.; RITZINGER, C. H. S. P.; JUNQUEIRA, N. T. V.; ALVES, R; T.. |
| RESUMO: O nematóide formador de galha das raízes, Meloidogyne javanica (Treub) Chitwood constitui-se ameaça para a cultura do maracujá-azedo, Passiflora edulis f. flavicarpa na Região do Cerrado. O híbrido EC-2-0 (cultivar Marília Sul Brasil x Roxo Australiano) tem grande potencial de produção no Cerrado e maior tolerância às doenças da parte aérea. O ensaio foi conduzido em casa de vegetação, na Embrapa Cerrados, Planaltina-DF, visando a determinar a patogenicidade e a reprodução desse nematóide no híbrido EC-2-0 de maracujá-azedo aos diferentes tipos de inóculos: 100, 1000, 10.000 ovos e juvenis de segundo estágio por kg de solo (50% mistura de Latossolo Vermelho Escuro e areia grossa do rio com calagem, adubado e autoclavado) e por planta com 21 dias.... |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: Nematóide de planta; Plant nematodes; Plant galls.; Galha; Maracujá; Meloidoginose; Passiflora Edulis; Variedade Resistente.; Disease resistance; Passion fruits.. |
| Ano: 2003 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/568535 |
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| De Decker, Sophie. |
| The New-Caledonian shrimp industry is based on the controlled reproduction of the shrimp Litopenaeus stylirostris, a species which was introduced in the 80s. The major difficulty to which the industry has been faced for 10 years is the occurrence of the “Syndrome 93”, which corresponds to mortality phases when the temperature falls down in April-May-June. This mortality is associated to the pathogenic bacteria Vibrio penaecida. An experiment of genetic selection based on the criterion ofsurvival to Syndrome 93 has been conducted at the Laboratory of Aquaculture of New Caledonia. The 3rd selected generation had demonstrated very encouraging results (survival rates improved by around 20% in experimental infections with V. penaeicida). These results have not... |
| Tipo: Text |
Palavras-chave: Amélioration génétique; L. stylirostris; Résistance; Syndrome 93; Genetic improvement; L. stylirostris; Disease resistance; Syndrome 93. |
| Ano: 2004 |
URL: http://archimer.ifremer.fr/doc/00204/31527/29943.pdf |
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| Dégremont, Lionel; Morga, Benjamin; Trancart, Suzanne; Pépin, Jean-francois. |
| The ostreid herpesvirus(OsHV-1) is one of the major diseases that affect the Pacific oyster Crassostrea gigas. Selective breeding programs were recently shown to improve resistance easily to OsHV-1 infections in spat, juvenile, and adult oysters. Nevertheless, this resistance has never been investigated in larvae, whereas this developmental stage has crucial importance for the production of commercial hatcheries, as well as explaining the abundance of spatfall. A first trial tested several viral suspensions at several concentrations using contaminated water with OsHV-1 in 4- and 10-day-old larvae that we reproduced from an unselected broodstock. In follow up on the results, one viral suspension at a final concentration of 10+6 OsHV-1 DNA copies per L was... |
| Tipo: Text |
Palavras-chave: Larvae; Crassostrea gigas; OsHV-1; Disease resistance; Mortality. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00313/42441/41796.pdf |
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| Abán, Carla Luciana; Taboada, Gisel Maria; Casalderrey, Norma Beatriz; Maggio, Maria Elisa; Chocobar, Mario Osvaldo; Spedaletti, Yamila Andrea; Gonzalez, Mónica Alicia Aparicio; Vizgarra, Oscar Vicéforo; Galván, Marta Zulema. |
| White mold caused by Sclerotinia sclerotiorum (Lib.) de Bary is a devastating disease that affects the common bean (Phaseolus vulgaris. L) crop worldwide. In Argentina, white mold has been detected in all bean production areas, reaching seed yield and quality losses up to 100% on susceptible common bean cultivars under favorable weather conditions. The aim of this study was to screen the physiological resistance of 20 common bean accessions to five genetically distinct isolates of S. sclerotiorum collected from the main common bean growing area of Argentina, using the greenhouse straw test. The white mold reaction was scored at 7, 14, and 21 days post-inoculation using a 1 (no disease symptoms) to 9 (severely diseased or dead plants) scale and the area... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phaseolus vulgaris white mold disease resistance straw test. Fitopatologia Melhoramento Vegetal Phaseolus vulgaris; White mold; Disease resistance; Straw test.. |
| Ano: 2020 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42786 |
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| Registros recuperados: 144 | |
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