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| Martins,Marco A.; Cruz,Andre F.. |
| An experiment under greenhouse conditions was carried out to evaluate the relative contribuition of arbuscular mycorrhizal fungi (AMF) in the process of nitrogen transfer from cowpea to maize plants, using the isotope 15N. Special pots divided in three sections (A, B and C), were constructed and a nylon mesh screen of two diameters: 40µm (which allowed the AMF hyphae to pass but not the plant roots) or 1µm (which acted as a barrier to AM hyphae and plant roots) was inserted between the sections B and C. Section A had 25.5 mg of N/kg using (15NH4)2SO4 as N source. Two cowpea seedlings inoculated with Rhizobium sp. were transplanted with their root systems divided between the sections A and B. Ten days later, 2 seeds of maize were sown into the section C... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mycorrhizae; Cowpea; Maize; Nitrogen transfer. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141998000400011 |
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| Schiavo, Jolimar Antonio; UEMS; Martins, Marco Antonio; UENF; Rodrigues, Luciana Aparecida; FAETEC. |
| O presente trabalho objetivou avaliar o efeito de fungos micorrízicos arbusculares (FMAs) no crescimento de mudas de acácia (Acacia mangium Willd.), sesbânia (Sesbania virgata (Cav.) Pers.) e eucalipto (Eucalyptus camaldulensis Dehnh.) em casa-de-vegetação e o comportamento dessas espécies, inoculadas ou não com FMAs, em monocultivo e/ou consórcio em áreas degradadas pela extração de argila. Aos 75 dias após a semeadura (DAS), mudas de acácia e sesbânia, inoculadas com FMAs, apresentaram incrementos de 21,5 e 6,5% na altura, respectivamente, em relação às não-inoculadas. Semelhantemente o acúmulo de matéria seca na parte aérea de acácia e sesbânia com FMAs foi de 50 e 52%, respectivamente, em relação às não-inoculadas. Na cava-de-extração de argila, as... |
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Palavras-chave: 5.01.00.00-9 Agronomia qualidade de mudas; Micorrizas; Leguminosas; Rizóbio seedling quality; Mycorrhizae; Legume; Rhizobium. |
| Ano: 2010 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/7309 |
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| Ambrosini,Vítor Gabriel; Voges,Joana Gerent; Canton,Ludiana; Couto,Rafael da Rosa; Ferreira,Paulo Ademar Avelar; Comin,Jucinei José; Melo,George Wellington Bastos de; Brunetto,Gustavo; Soares,Cláudio Roberto Fonsêca Sousa. |
| Abstract High copper (Cu) levels in uprooted old vineyard soils may cause toxicity in transplanted young vines, although such toxicity may be reduced by inoculating plants with arbuscular mycorrhizal fungi (AMF). The objective of this study was to evaluate the effects of AMF on the plant growth, chlorophyll contents, mycorrhizal colonization, and Cu and phosphorus (P) absorption in young vines cultivated in a vineyard soil contaminated by Cu. Commercial vineyard soil with high Cu levels was placed in plastic tubes and transplanted with young vines, which were inoculated with six AMF species (Dentiscutata heterogama, Gigaspora gigantea, Acaulospora morrowiae, A. colombiana, Rhizophagus clarus, R. irregularis) and a control treatment on randomized blocks... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mycorrhizae; Trace elements; Phosphorus; Vitis sp. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000401045 |
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| Gattai,Graziella S; Pereira,Sônia V; Costa,Cynthia M. C; Lima,Cláudia E. P; Maia,Leonor C. |
| The goals of this study were to evaluate the microbial activity, arbuscular mycorrhizal fungi and inoculation of woody plants (Caesalpinia ferrea, Mimosa tenuiflora and Erythrina velutina) in lead contaminated soil from the semi-arid region of northeastern of Brazil (Belo Jardim, Pernambuco). Dilutions were prepared by adding lead contaminated soil (270 mg Kg-1) to uncontaminated soil (37 mg Pb Kg soil-1) in the proportions of 7.5%, 15%, and 30% (v:v). The increase of lead contamination in the soil negatively influenced the amount of carbon in the microbial biomass of the samples from both the dry and rainy seasons and the metabolic quotient only differed between the collection seasons in the 30% contaminated soil. The average value of the acid phosphatase... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: AMF; Contaminated soil; Heavy metals; Mycorrhizae; Semi-arid. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000300004 |
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| Registros recuperados: 23 | |
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