Consulta: creatorFacets:"Marra,Leandro Marciano"
Registros recuperados: 3
Data/hora: 03/06/2024 10:03:50

Época, local de colheita e armazenamento na qualidade fisiológica da semente de sempre-viva (Syngonanthus elegans (Bong.) Ruhland - Eriocaulaceae)
Provedor de dados: 95
Autores: Nunes,Silvia Cristina Paslauski; Nunes,Ubirajara Russi; Fonseca,Patrícia Gomes; Grazziotti,Paulo Henrique; Pego,Rogério Gomes; Marra,Leandro Marciano.
O objetivo deste trabalho foi avaliar a qualidade fisiológica de sementes da sempre-viva (Syngonanthus elegans (Bong.) Ruhland) colhidas em diferentes épocas e locais e submetidas ao armazenamento. Capítulos de S. elegans foram colhidos em duas áreas de ocorrência natural no Campus II da Universidade Federal dos Vales do Jequitinhonha e Mucuri - UFVJM, em Diamantina, MG, em um Neossolo Quartzarênico Órtico típico (local 1) e Neossolo Quartzarênico Hidromórfico típico (local 2), em cinco épocas (04/07/05, 19/07/05, 22/08/05, 21/09/05 e 20/10/05) e, posteriormente, submetidos a testes para avaliação do vigor e da germinação da semente (Experimento 1). Os capítulos colhidos em 04/07/05 (locais 1 e 2) foram acondicionados em sacos de polietileno transparente e...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Temperatura; Vigor; Germinação.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222008000100005

Cowpea symbiotic efficiency, pH and aluminum tolerance in nitrogen-fixing bacteria
Provedor de dados: 63
Autores: Soares,Bruno Lima; Ferreira,Paulo Avelar Ademar; Oliveira-Longatti,Silvia Maria de; Marra,Leandro Marciano; Rufini,Marcia; Andrade,Messias José Bastos de; Moreira,Fatima Maria de Souza.
Cowpea (Vigna unguiculata) cultivation in northern and northeastern Brazil provides an excellent source of nutrients and carbohydrates for the poor and underprivileged. Production surplus leads to its consumption in other regions of Brazil and also as an export commodity. Its capacity to establish relationships with atmospheric nitrogen-fixing bacteria is crucial to the reduction of production costs and the environmental impact of nitrogen fertilizers. This study assessed the symbiotic efficiency of new strains of symbiotic nitrogen-fixing bacteria with cowpea and their tolerance to pH and aluminum. Twenty-seven strains of bacteria from different soils were evaluated under axenic conditions. These strains were compared to the following inoculant strains:...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vigna unguiculata; Bradyrhizobium; Burkholderia; Native rhizobia.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162014000300001

Solubilisation of inorganic phosphates by inoculant strains from tropical legumes
Provedor de dados: 63
Autores: Marra,Leandro Marciano; Oliveira,Silvia Maria de; Soares,Cláudio Roberto Fonsêca Sousa; Moreira,Fatima Maria de Souza.
Microbial solubilisation of low soluble inorganic phosphates is an important process contributing for the phosphorus available to plants in tropical soils. This study evaluates the ability of inoculant strains for tropical legumes to solubilise inorganic phosphates of low solubility that are found in tropical soils. Seven strains of Leguminosae nodulating bacteria (LNB) were compared with one another and with a non-nodulating positive control, Burkholderia cepacia (LMG 1222T). Four of the strains are used as inoculants for cowpeas (Vigna unguiculata) (Bradyrhizobium sp. UFLA 03-84; Bradyrhizobium elkani INPA 03-11B and Bradyrhizobium japonicum BR3267) or for common beans (Phaseolus vulgaris) (Rhizobium tropici CIAT 899T). Rhizobium etli UFLA 02-100 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rhizobium; Bradyrhizobium; Cupriavidus; Phosphate-solubilising bacteria; Nitrogen-fixing bacteria.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000500015