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| Registros recuperados: 10 | |
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| NERI,ANDREZA V.; SCHAEFER,CARLOS E.G.R.; SOUZA,AGOSTINHO L.; FERREIRA-JUNIOR,WALNIR G.; MEIRA-NETO,JOÃO A.A.. |
| This study was carried out in Paraopeba National Reserve. It aims to classify and evaluate the soil of the studied area and to verify the influence of soil attributes on vegetation by testing the following hypotheses: 1) under woodland physiognomies (Cerradão) the soil fertility is higher and the Al content lower; 2) open savanna occurs only in areas with high Al contents. For this purpose, representative soils in the Paraopeba National Reserve were mapped, identified, and samples from five profiles were analyzed. The environmental gradient was easily observed by principal components analyses, where the differences between the sites were highlighted. The Spearman correlation was used to verify the hypothesis. The correlation between vegetation (basal area,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aluminum tolerance; Brazilian savanna; Edaphic features; Soil fertility; Soil-vegetation gradient. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100087 |
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| Costa,Antonio; Campos,Luís Alberto Cogrossi; Riede,Carlos Roberto. |
| Ten wheat (Triticum aestivum) genotypes were evaluated in microplots with aluminum saturation of 0, 15, 30 and 45%, during 1994, in Londrina, Paraná, Brazil. The soil was a Distrofic Red Latosol (Typic Haplorthox), with 65% saturation of aluminum, amended with dolomitic lime. Variables evaluated included grain yield and yield components: ears.m-2, grains.ear-1 and the weight of 1000 grains. Genotypes differed in yield and yield components. Increasing aluminum saturation decreased yield, ears.m-2 and grains.ear-1, but did not alter thousand kernel weight. The genotypes reacted differently in relation to the toxic soil aluminum. Anahuac and IAPAR 29 were aluminum sensitive; OCEPAR 16, Trigo BR 18, and Trigo BR 23 were moderately sensitive; IAPAR 6, IAPAR 53,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum; Aluminum tolerance; Aluminum soil saturation; Yield components. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000100004 |
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| Fráguas,José Carlos. |
| Onze porta-enxertos e duas cultivares americanas de videira (Vitis spp) foram avaliadas mediante níveis de saturação por Al no solo (Cambissolo Húmico álico), objetivando alcançar a tolerância diferenciada ao Al. O trabalho foi conduzido em casa de vegetação, com seis tratamentos completamente casualizados e quatro repetições, na Embrapa-Centro Nacional de Pesquisa de Uva e Vinho, em Bento Gonçalves, RS, no período de 1987 a 1990. As características avaliadas foram: altura das plantas, comprimento das raízes, peso da matéria seca da parte aérea e das raízes e teores de P, K, Ca e Mg em folhas e raízes. Diante dos acréscimos ou aumentos verificados em cada característica (variação %) e por cultivar, foi possível estabelecer a tolerância diferenciada das... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis; Nutrição mineral; Toxidez; Tolerância ao alumínio; Vitis; Mineral nutrition; Toxicity; Aluminum tolerance. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X1999000700011 |
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| Oliveira,Érica Cristina de; Pinto-Maglio,Cecília Alzira Ferreira. |
| ABSTRACT: Presence of the ALMT1 (aluminum-activated malate transporter) gene confers resistance to aluminum toxicity in Triticum aestivum (common wheat). No resistant cultivars of Triticum turgidum ssp. Durum Desf. (durum wheat) have been registered in Brazil. The aim of this study was to map the ALMT1 through application of the FISH (fluorescence in situ hybridization) technique in five wheat genotypes, common and durum, from the Active Germplasm Bank (AGB) of the Instituto Agronômico (IAC): BH 1146, P19, P33, Anahuac, and IAC 1003. FISH-ALMT1 signals were registered in Anahuac (sensitive) chromosomes and in BH 1146, P19, and P33 (resistant) chromosomes. In the three resistant genotypes, a characteristic double FISH signal was found, located in different... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum sp.; Molecular cytogenetics; Fluorescence in situ hybridization; Aluminum tolerance; Toxicity. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000501102 |
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| Morello,Camilo de Lellis; Miranda Filho,José Branco de; Gorgulho,Eliana Patrícia. |
| In Brazil, acid soils represent a large portion of the agricultural area and the development of cultivars with tolerance to acidity has shown to be feasible. The identification of germoplasm potentially tolerant to acidity was the purpose of this work. Two distinct groups of maize (Zea mays L.) populations were crossed according to the partial diallel mating scheme: Group [1] with six adapted populations and Group [2] with seven exotic varieties. All varieties and crosses were evaluated under the condition of acid and low fertility soil. Traits analyzed were: EY- ear yield, PH- plant height and EH- ear height. Outstanding varieties per se, with yield higher than 3 t ha-1, were SUWAN-2, TAITINGA, TAIÚBA and IUBATÃ in Group [1]; and CUPURICO DMR, TUXPEÑO... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; Partial diallel; Heterosis; Acid soil; Aluminum tolerance. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162001000200014 |
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| Registros recuperados: 10 | |
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