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| Registros recuperados: 183 | |
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| BARROS,Gerson Moreira; SANTOS,Jean Cheyson Barros dos; SOUZA JÚNIOR,Valdomiro Severino de; DELARMELINDA,Elaine Almeida; ARAÚJO FILHO,José Coelho de; CÂMARA,Elis Regina Guimarães. |
| ABSTRACT The expansion of the agricultural frontier into different geological environments in the west of the state of Pará, northern Brazil, makes it necessary to know the influence of the parent material on local soil attributes. This study aimed to evaluate the influence of different parent materials on five soil profiles along a lithosequence exposed by the BR-163 highway, which runs from north to south through western Pará. The soils were classified, morphologically described and their main horizons sampled for physical, mineralogical and chemical analyses, including the determination of micronutrients, forms of phosphorus and secondary forms of iron. Multivariate analysis was used to group the different soil-parent material associations. The results... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil mineralogy; Physical attributes; Chemical attributes; Multivariate analysis. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672018000300261 |
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| Gonçalves-Esteves,Vania; Vieira,Gabrielle Reboredo Menezes; Carvalho,Renata Jacomo Paixão de; Crespo,Sonia Regina de Melo; Mendonça,Claudia Barbieri Ferreira. |
| ABSTRACT This work aimed to morphologically characterize 22 species of Spermacoceae s.s found in the Atlantic Forest in the state of Rio de Janeiro with the purpose of improving palynological knowledge of the studied species. The studied species included six species of Borreria and Denscantia cymosa, Emmeorhiza umbellata, Hexasepalum apiculatum, H. radula, H. teres, Manettia fimbriata, Mitracarpus eichleri, M. frigidus, M. hirtus, M. lhotzkyanus, M. megapotamicus, Oldenlandia salzmannii, Pentodon pentandrus, Richardia brasiliensis, Richardia scabra and Spermacoce rubescens. Acetolysed pollen grains were analyzed using light (LM) and scanning electron miscroscopy (SEM). The pollen grains varied in size (polar diameter) from medium to large, with the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gentianales; Multivariate analysis; Palynology; Rubioideae; Systematics. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000200243 |
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| Silva,Dilma Melo da; Sylvestre,Lana da Silva; Mendonça,Cláudia Barbieri Ferreira; Gonçalves-Esteves,Vania. |
| ABSTRACT The palynological diversity of Blechnaceae in the Atlantic Forest was investigated. While the monophyletic family belongs to the group of leptosporangiate ferns, a new classification proposed by recent phylogenetic study reorganizes the family and adds new genera. To expand palynological knowledge of the group, the spore morphology of 23 species and a hybrid, distributed among 10 genera, was described. Material from herbarium collections were submitted to acetolysis and mounted on slides, with subsequent statistical analysis of spore measurements. Photomicrographs of the material were taken under both light and scanning electron microscopy. Perine ornamentation varied among psilate, rugulate and scabrate; granules and gemmae were present along... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Austroblechnum; Blechnum; Spore; Multivariate analysis; Palynology. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000300412 |
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| Pereira, Tamara; CAV-UDESC; Coelho, Cileide Maria Medeiros; CAV-UDESC; Santos, Julio Cesar Pires dos; CAV-UDESC; Bogo, Amauri; CAV-UDESC; Miquelluti, David Jose; CAV-UDESC. |
| O feijão representa importante fonte de nutrientes, e pode ter seus teores aumentados com o uso de genótipos que apresentem naturalmente elevados teores destes nutrientes, como ocorre nos genótipos crioulos. O objetivo deste trabalho foi caracterizar 34 genótipos crioulos do Banco Ativo de germoplasma de Feijão do CAV-UDESC quanto ao teor de nutrientes (cálcio, magnésio, zinco, ferro, fósforo, potássio, proteína total e solúvel) e antinutriente (fitato) nos grãos, durante os anos de cultivo de 2005/2006 e 2006/2007. O teor de nutrientes nos grãos de feijão foi influenciado tanto pelo genótipo, quanto pelas condições climáticas, com respostas diferentes em cada ano de cultivo, e entre os dois anos de cultivo. Os genótipos crioulos BAF 60, 69 e 108... |
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Palavras-chave: 5.00.00.00-4 variabilidade genética; Qualidade nutricional; Germoplasma; Análise multivariada 5.01.03.00-8 genetic variability; Nutrition quality; Germplasm; Multivariate analysis. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/6328 |
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| Cargnin, Adeliano. |
| Canonical correlation analysis allows conclusions to be drawn about the occurrence and magnitude of associations between two groups of characteristics. This study estimated the magnitude of association and interdependence between two trait groups of clones of two varieties of Vitis vinifera grapes. The study was based on the mean data of eight characteristics from two experiments to test the performance of these clones: the first experiment provided data from seven clones of Cabernet Sauvignon, which evaluated in the northern San Joaquin Valley, California, United States, and the second data set was from six clones of the Chardonnay variety, which were evaluated in the Napa Valley, California, United States. The canonical correlations among the two... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis vinifera; Multivariate analysis; Variety; Selection; Clones.. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42619 |
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| Ferreira, Fábio Medeiros; Universidade Federal do Amazonas - Instituto de Ciências Exatas e Tecnologia em Itacoatiara; Neves, Leonarda Grillo; Universidade Estadual do Mato Grosso - Departamento de Agronomia; Bruckner, Claudio Horst; Universidade Federal de Viçosa - Departamento de Fitotecnia; Viana, Alexandre Pio; Universidade Estadual do Norte Fluminense - Laboratório de Melhoramento Genético Vegetal; Cruz, Cosme Damião; UFV; Barelli, Marco Antonio Aparecido; Unemat. |
| No presente estudo, objetivou-se formar supercaracteres para seleção simultânea de variáveis relacionadas à produção e qualidade dos frutos em famílias de irmãos completos e, ou, meios-irmãos de maracujazeiro amarelo (Passiflora edulis f. flavicarpa). Avaliaram-se 113 famílias e 11 variáveis, no Delineamento I de Comostock e Robinson, em blocos ao acaso com três repetições. A análise de fatores estabeleceu três supercaracteres: tamanho do fruto (TF), produtividade (PROD) e rendimento de indústria (RI). Para grande maioria das variáveis originais, foram verificados sinais de cargas fatoriais que refletem o verdadeiro sentido da seleção em programas de melhoramento de maracujá. Detectou-se variabilidade genética nos níveis hierárquicos de genitor masculino e... |
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Palavras-chave: Agronomia Passiflora edulis f. flavicarpa; Seleção simultânea; Análise multivariada; Melhoramento genético Melhoramento Vegetal Passiflora edulis f. flavicarpa; Simultaneous selection; Multivariate analysis; Genetic breeding. |
| Ano: 2010 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/3328 |
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| Cargnin, Adeliano. |
| Canonical correlation analysis allows conclusions to be drawn about the occurrence and magnitude of associations between two groups of characteristics. This study estimated the magnitude of association and interdependence between two trait groups of clones of two varieties of Vitis vinifera grapes. The study was based on the mean data of eight characteristics from two experiments to test the performance of these clones: the first experiment provided data from seven clones of Cabernet Sauvignon, which evaluated in the northern San Joaquin Valley, California, United States, and the second data set was from six clones of the Chardonnay variety, which were evaluated in the Napa Valley, California, United States. The canonical correlations among the two... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis vinifera; Multivariate analysis; Variety; Selection; Clones.. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42619 |
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| Silva, Rodes Angelo Batista da; Pandorfi, Héliton; Almeida, Gledson Luiz Pontes de; Silva, Marcos Vinícius da. |
| The aim of this study was to employ the principal component technique to physiological data and environmental thermohygrometric variables correlated with detection of clinical and subclinical mastitis in dairy cattle. A total of 24 lactating Girolando cows with different clinical conditions were selected (healthy, and with clinical or subclinical mastitis). The following physiological variables were recorded: udder surface temperature, ST (°C); eyeball temperature, ET (°C); rectum temperature, RT (°C); respiratory frequency, RF (mov. min-1). Thermohygrometric variables included air temperature, AirT (°C), and relative humidity, RU (%). ST was determined by means of thermal images, with four images per animal, on these quarters: front left side (FL), front... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Multivariate analysis; Images; Lactating cows. |
| Ano: 2020 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/46394 |
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| Slusarski, Simone Rodrigues; Universidade Estadual de Maringá; Souza, Maria Conceição de; Universidade Estadual de Maringá. |
| The vegetation from the upper Paraná river floodplain is a fragment of Seasonal Semideciduous Forest (SSF) that presents fields, lowlands and extensive areas of pasture along with forest formations. Aiming to accomplish analyses of floristic similarity between riparian forests remnants in this floodplain, an analysis using nine surveys was performed, four on the right bank, two on the left bank and three at an island, including tree species. Sørensen’s (ISs) and Jaccard’s (ISj) similarity coefficients were calculated, and a Correspondence Analysis (CA) was applied to a matrix of presence and absence of species. Thirty-seven families, 80 genera and 110 species were recorded. Among the species, 5.5% were generalist, while 29.1% were exclusive to one survey.... |
| Tipo: Levantamentos florísticos; Análises de similaridade |
Palavras-chave: 2.03.00.00-0 coefficients of similarity; Multivariate analysis; Seasonal semideciduous forest; Riparian vegetation Botânica. |
| Ano: 2012 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/8500 |
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| García-Fuentes,Antonio; Torres-Cordero,Juan A.; Ruiz-Valenzuela,Luis; Lendínez-Barriga,María Lucía; Quesada-Rincón,Juan; Valle-Tendero,Francisco; Veloz,Alberto; León,Yolanda M.; Salazar-Mendías,Carlos. |
| This paper is a floristic and phytosociological study of the dry forest communities of the Dominican Republic. A total of 69 relevés in dry forest biotopes were carried out. The samples were subsequently subjected to Detrended Correspondence Analysis for the determination and study of possible groupings. The study does not cover tree formations growing on serpentines, nor the so-called semideciduous forests, peculiar to areas with higher rainfall. A total of nine phytocoenoses were identified. The most significant results led to the description of six new phytosociological associations: Simaroubetum berteroani(thorny dry forest on coastal dunes), Phyllostylo rhamnoidis-Prosopidetum juliflorae (southern Dominican disturbed dry forest), Consoleo... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Caribbean; Endemism; Multivariate analysis; Phytosociology; Xericity. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000100249 |
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| NEVES,WALTER A.; BERNARDO,DANILO V.; PANTALEONI,IVAN. |
| ABSTRACT Recent fossil material found in Dinaledi Chamber, South Africa, was initially described as a new species of genus Homo, namely Homo naledi. The original study of this new material has pointed to a close proximity with Homo erectus. More recent investigations have, to some extent, confirmed this assignment. Here we present a phenetic analysis based on dentocranial metric variables through Principal Components Analysis and Cluster Analysis based on these fossils and other Plio-Pleistocene hominins. Our results concur that the Dinaledi fossil hominins pertain to genus Homo. However, in our case, their nearest neighbors are Homo habilis and Australopithecus sediba. We suggest that Homo naledi is in fact a South African version of Homo habilis, and not... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cranio-dental traits; Human evolution; Human origins; Multivariate analysis. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502199 |
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| FALCÓN-ORDAZ,JORGE; OCTAVIO-AGUILAR,PABLO; ESTRELLA-CRUZ,ISABEL. |
| Abstract: Fifty-five adult Dicrocoelium rileyiMacy, 1931 parasitizing Tadarida brasiliensis (Geoffroy, 1824) from Durango, Nuevo Leon, Puebla, Zacatecas and Mexico State were morphologically described and morphometrically analyzed. To evaluate the degree of variation among populations from the five localities, 27 morphometric measures of this species were transformed into an orthogonal factor by principal component analysis (PCA), and a posterior comparison among populations was performed using discriminant analysis of principal components (DAPC). Significant differences were observed with exceptions between the Puebla – Zacatecas and Nuevo Leon – Mexico State populations when forming three groups with an 88 % assignation. The Durango population was the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bats; Platyhelminthes; Interlocal variability; Multivariate analysis. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000700609 |
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| Registros recuperados: 183 | |
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