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| ANDRADE, E. L. de; MELO, A. S. de; MELO, Y. L.; SÁ, F. V. da S.; ROCHA, M. de M.; OLIVEIRA, A. P. a S.; FERNANDES JUNIOR, P. I.. |
| To evaluate the interaction between foliar application of salicylic acid and Bradyrhizobium inoculation on the morphophysiology of cowpea under water stress conditions, four genotypes (BRS Rouxinol, BRS Marataoã, BRS Aracê and BR 17 Gurguéia) were subjected to five combinations of water availability: 100% replacement of crop evapotranspiration (control); 50% replacement of crop evapotranspiration (water stress); water stress + salicylic acid; water stress + Bradyrhizobium inoculation; and water stress + salicylic acid + Bradyrhizobium inoculation. The experiment was set up in a 4 × 5 factorial randomized block design, with four replicates and four plants per plot. Water stress negatively affected the leaf water potential, growth, proline contents and... |
| Tipo: Artigo de periódico |
Palavras-chave: Feijão caupi; Estresse hídrico; Atividade antioxidante; Rizobio; Feijão; Vigna Unguiculata; Bactéria; Bradyrhizobium; Cowpeas; Water stress; Rhizobiaceae; Antioxidant activity. |
| Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1123411 |
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| JOVINO, R. S.; SILVA, T. R. da S.; RODRIGUES, R. T.; CARVALHO, J. R. de S.; CUNHA, J. B. de A.; LIMA, L. M. de; SANTOS, R. C. dos; SANTOS, C. E. de R. e S.; RIBEIRO, P. R. de A.; FREITAS, A. D. S. de; MARTINS, L. M. V.; FERNANDES-JÚNIOR, P. I.. |
| Peanut (Arachis hypogaea L.) is an important crop for the family-based systems in the tropics, mainly in Brazil. In the Brazilian drylands, peanuts are cropped in low technological systems, and cheap and efcient technologies are needed to improve crop yield and sustainability. Despite this importance, few data are available on selecting efcient peanut rhizobia in experiments under diferent edaphoclimatic conditions. This work evaluated the agronomic efciency and the biological nitrogen fxation (BNF) by two elite Bradyrhizobium strains under four diferent felds in the Brazilian semiarid region. We compared a new efcient strain Bradyrhizobium sp. ESA 123 with the reference strain B. elkanii SEMIA 6144, currently used in peanut rhizobial inoculants in Brazil.... |
| Tipo: Artigo de periódico |
Palavras-chave: Nitrogênio; Amendoim; Semente; Seleção; Inoculante; Solo Árido; Seed inoculation; Strains; Arachis hypogaea subsp. hypogaea; Rhizobiales; Rhizobiaceae; Semiarid soils. |
| Ano: 2022 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1146324 |
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| GONCALVES, R. C.; LAU, D.; OLIVEIRA, J. R.; MAFFIA, L. A.; CASCARDO, J. C. M.; ALFENAS, A. C.. |
| Bacterial leaf blight of eucalyptus is initially characterized by water soaked, angular, amphigenous and interveinal lesions, concentrated along the main vein, at the edges or scattered on the leaf blade. As the disease progresses, the lesions become brown to pale, and when young leaves are infected leaf cut areas at the edges or perforations at the center of the lesions may appear due to abortion of the necrotic area. Eventually, necrosis may be found on petiole and twigs. Leaf fall commonly occurs on highly susceptible genotypes due to the early senescence of diseased leaves. Precise diagnosis is accomplished by bacterial exudation from leaf sections placed in a water drop under light microscope (200 x). Twenty-five bacterial isolates from Amapá (2),... |
| Tipo: Artigo de periódico |
Palavras-chave: Enfermedades y desórdenes de las plantas; Marchitez foliar.; Doença de planta; Bactéria; Mancha foliar; Etiologia; Eucalipto; Eucalyptus spp; Plant diseases and disorders; Leaf blight; Etiology; Erwinia; Pseudomonas; Rhizobiaceae; Xanthomonas.. |
| Ano: 2008 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/510894 |
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| PEREIRA, P. M.. |
| Rizóbios são bactérias que, quando em simbiose com determinadas plantas da família Leguminosae, são capazes de fixar nitrogênio atmosférico e convertê-lo a uma forma assimilável pela planta. Contudo, apesar da importância ecológica e econômica, os rizóbios tem sido relativamente pouco estudados. Baseado nos dados de sequenciamento do gene 16S RNAr estão definidos atualmente, cinco gêneros de rizóbios, Azorhizobium, Bradyrhizobium, Mesorhizobium, Rhizobium, Sinorhizobium, mais de 40 espécies, compreendidos na subclasse alfa das Proteobacterias. Vários estudo vem sendo conduzidos, a fim de determinar a diversidade existente entre os rizóbios, bem como estabelecer relações filogenéticas com outras bactérias e estruturar hipóteses quanto à evolução simbiótica.... |
| Tipo: Teses |
Palavras-chave: Bactéria; Fixação de Nitrogênio; Microbiologia; Rhizobium; Nitrogen fixation; Rhizobiaceae. |
| Ano: 2005 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/467871 |
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