Consulta: creatorFacets:"Azevedo,Alcinei Mistico"
Registros recuperados: 10
Data/hora: 02/06/2024 16:19:58

Parâmetros genéticos e análise de trilha para o florescimento precoce e características agronômicas da alface
Provedor de dados: 86
Autores: Azevedo,Alcinei Mistico; Andrade Júnior,Valter Carvalho de; Castro,Bárbara Monteiro de Castro e; Oliveira,Celso Mattes de; Pedrosa,Carlos Enrrik; Dornas,Marcus Flávius Silva; Valadares,Nermy Ribeiro.
O objetivo deste trabalho foi avaliar os parâmetros genéticos das características agronômicas e de tolerância ao florescimento precoce de onze cultivares de alface, bem como verificar a existência de associação entre as características. O experimento foi realizado em ambiente protegido, em delineamento de blocos ao acaso, com quatro repetições e doze plantas por parcela. Quarenta e cinco dias após o transplantio das mudas, foram mensuradas as seguintes características: massa de matéria fresca total e "comercial" da parte aérea, massa de matéria seca "comercial" da parte aérea, massa de matéria fresca e seca da raiz, diâmetro e circunferência da cabeça, altura de planta, número de folhas por planta e número de dias até a antese. Há variabilidade genética...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactuca sativa; Ambiente protegido; Antese; Correlação; Pendoamento.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2014000200118

Desempenho agronômico e variabilidade genética em genótipos de couve
Provedor de dados: 86
Autores: Azevedo,Alcinei Mistico; Andrade Júnior,Valter Carvalho de; Pedrosa,Carlos Enrrik; Fernandes,José Sebastião Cunha; Valadares,Nermy Ribeiro; Ferreira,Marcos Aurélio Miranda; Martins,Rafael Augusto do Valle.
O objetivo deste trabalho foi avaliar o desempenho agronômico de acessos de couve e estimar os parâmetros genéticos e a correlação entre características de interesse para o melhoramento. O experimento foi realizado em delineamento de blocos ao acaso, com 30 genótipos de couve, entre os quais, três cultivares comerciais, de diferentes empresas. Foram utilizadas quatro repetições, com cinco indivíduos por parcela. Verificou-se variabilidade genética entre os genótipos, com predominância dos efeitos genéticos sobre os ambientais, o que indica a possibilidade de se obterem ganhos genéticos representativos com o melhoramento. As características importantes para o melhoramento da espécie foram: comprimento e largura de folha, diâmetro de pecíolo, área foliar,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brassica oleracea var. acephala; Correlação fenotípica; Correlação genotípica; Herdabilidade; Parâmetros genéticos.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012001200011

Correlações genotípicas e análise de trilha em famílias de meios-irmãos de couve de folhas
Provedor de dados: 86
Autores: Azevedo,Alcinei Mistico; Seus,Rogério; Gomes,Cristiane Lourenço; Freitas,Elis Marina de; Candido,Diego Mattos; Silva,Derly José Henriques da; Carneiro,Pedro Crescêncio Souza.
Resumo: O objetivo deste trabalho foi avaliar, por meio de correlação genotípica e análise de trilha, as associações entre características em famílias de meios-irmãos de couve e os possíveis efeitos da seleção truncada. Foram avaliadas 13 características em 24 famílias de meios-irmãos de couve. Realizaram-se quatro análises de trilha, tendo-se considerado as seguintes variáveis básicas: altura de planta, número de brotações, número de folhas por planta e diâmetro do caule. Cada análise considerou 12 características como variáveis explicativas. Constataram-se as maiores estimativas de correlação entre as seguintes características: comprimento e largura do pecíolo; número de folhas; massa de matéria fresca de folhas; e comprimento e largura de folhas. A...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brassica oleracea var. acephala; Correlação genotípica; Multicolinearidade; Regressão em crista; Seleção truncada.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000100035

Fuzzy logic in automation for interpretation of adaptability and stability in plant breeding studies
Provedor de dados: 63
Autores: Carneiro,Anna Regina Tiago; Sanglard,Demerson Arruda; Azevedo,Alcinei Mistico; Souza,Thiago Lívio Pessoa Oliveira de; Pereira,Helton Santos; Melo,Leonardo Cunha.
ABSTRACT: The methods of Annicchiarico (1992) and Cruz et al. (1989) are widely used in phenotypic adaptability and stability analyses in plant breeding. In spite of the importance of these methodologies, their parameters are difficult to interpret. The aim of this research was to develop fuzzy controllers to automate the decision-making process employed by adaptability and stability studies following the methods adopted by Annicchiarico (1992) and Cruz et al. (1989) and check their efficiency using experimental data from common bean cultivars. Fuzzy controllers have been developed based on the Mamdani inference system proposed by these two methods of adaptability and stability studies. For the first fuzzy controller parameters were considered favorable...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Common bean; Genotype by environment interaction; Crop breeding; Computational intelligence.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001200123

Automation in accession classification of Brazilian Capsicum germplasm through artificial neural networks
Provedor de dados: 63
Autores: Ferreira,Mariane Gonçalves; Azevedo,Alcinei Mistico; Siman,Luhan Isaac; da Silva,Gustavo Henrique; Carneiro,Clebson dos Santos; Alves,Flávia Maria; Delazari,Fábio Teixeira; da Silva,Derly José Henriques; Nick,Carlos.
ABSTRACT Germplasm classification by species requires specific knowledge on/of the culture of interest. Therefore, efforts aimed at automation of this process are necessary for the efficient management of collections. Automation of germplasm classification through artificial neural networks may be a viable and less laborious strategy. The aims of this study were to verify the classification potential of Capsicum accessions regarding/ the species based on morphological descriptors and artificial neural networks, and to establish the most important descriptors and the best network architecture for this purpose. Five hundred and sixty-four plants from 47 Brazilian Capsicum accessions were evaluated. Neural networks of multilayer perceptron type were used in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Capsicum spp.; Garson’s method; Artificial intelligence; Taxonomy; Germplasm bank.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162017000300203

Longitudinal data assessment of global stability index in kale leaves
Provedor de dados: 63
Autores: Azevedo,Alcinei Mistico; Andrade Júnior,Valter Carvalho de; Pedrosa,Carlos Enrrik; Valadares,Nermy Ribeiro; Ferreira,Marcos Aurélio Miranda; Cecon,Paulo Roberto.
ABSTRACT Kale plants are usually sold “in natura” in street markets and malls. Kale leaves can have their appearance compromised by dehydration and discoloration due to increased post-harvest time exposure. We aimed to analyze the Global Stability Index (GSI) in kale accessions by means of repeated measurement analysis and curve grouping as a complementary form of superior sample identification with regard to post-harvest preservation. Thirty kale accessions were evaluated using a randomized block design with four blocks and five plants per plot. Two commercial leaves per plant were collected, and kept on workbenches in the shade at a temperature of 18 ± 1 °C. Subsequently, the degrees of discoloration and dehydration, total chlorophyll content, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brassica oleracea var. acephala DC; Post-harvest preservation; Repeated measurements; Multivariate statistics; Curve grouping.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000100079

Resistance of sweet potato clones to meloidogyne incognita races 1 and 3
Provedor de dados: 53
Autores: Gomes,Jorge Augusto Assis; Andrade Júnior,Valter Carvalho; Oliveira,Celso Mattes de; Azevedo,Alcinei Mistico; Maluf,Wilson Roberto; Gomes,Luiz Antonio Augusto.
The objective of this study was to evaluate sweet potato clones for resistance to root-knot nematode, Meloidogyne incognita races 1 and 3. For each nematode physiological race, a greenhouse experiment was set up in a randomized block experimental design with three replications and six plants per plot. Fifty-eight sweet potato clones from the UFVJM germplasm bank were evaluated, plus five commercial cultivars (Brazlândia Rosada, Brazlândia Branca, Palmas, Princesa and Coquinho), plus the cv. Santa Clara tomato (susceptible to Meloidogyne spp.). Stems were planted in 72-cell expanded polystyrene trays, filled with commercial substrate and inoculated with the pathogen thirty days after planting. Forty-five days after inoculation, the eggs were extracted,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ipomoea batatas; Root-knot nematode; Breeding; Pathogen; Reproduction factor; Reproduction index.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052015000300291

Application of artificial neural networks in indirect selection: a case study on the breeding of lettuce
Provedor de dados: 53
Autores: Azevedo,Alcinei Mistico; Andrade Júnior,Valter Carvalho de; Pedrosa,Carlos Enrrik; Oliveira,Celso Mattes de; Dornas,Marcus Flavius Silva; Cruz,Cosme Damião; Valadares,Nermy Ribeiro.
The efficiency of artificial neural networks (ANN) to model complex problems may enable the prediction of characteristics that are hard to measure, providing better results than the traditional indirect selection. Thus, this study aimed to investigate the potential of using artificial neural networks (ANN) for indirect selection against early flowering in lettuce, identify the influence of genotype by environment interaction in this strategy and compare your results with the traditional indirect selection. The number of days to anthesis were used as the desired output and the information of six characteristics (fresh weight of shoots, mass of marketable fresh matter of shoots, commercial dry matter of shoots, average diameter of the head, head...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactuca sativa; Multi-layer-perceptron; Gain selection; Plant breeding; Computational intelligence.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052015000400387

High-efficiency phenotyping for vitamin A in banana using artificial neural networks and colorimetric data
Provedor de dados: 53
Autores: Aquino,César Fernandes; Salomão,Luiz Carlos Chamhum; Azevedo,Alcinei Mistico.
ABSTRACT Banana is one of the most consumed fruits in Brazil and an important source of minerals, vitamins and carbohydrates for human diet. The characterization of banana superior genotypes allows identifying those with nutritional quality for cultivation and to integrate genetic improvement programs. However, identification and quantification of the provitamin carotenoids are hampered by the instruments and reagents cost for chemical analyzes, and it may become unworkable if the number of samples to be analyzed is high. Thus, the objective was to verify the potential of indirect phenotyping of the vitamin A content in banana through artificial neural networks (ANNs) using colorimetric data. Fifteen banana cultivars with four replications were evaluated,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Musa spp.; Colorimetric parameters; Computational intelligence; Multilayer perceptro; Phenomic.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052016000300268

Antioxidant activity of essential oils from condiment plants and their effect on lactic cultures and pathogenic bacteria
Provedor de dados: 65
Autores: Farias,Paula Karoline Soares; Silva,Júlio César Rodrigues Lopes; Souza,Cintya Neves de; Fonseca,Francine Souza Alves da; Brandi,Igor Viana; Martins,Ernane Ronie; Azevedo,Alcinei Mistico; Almeida,Anna Christina de.
ABSTRACT:  Studies about preservative and antioxidant activity of essential oils have been encouraged in recent years, given their importance to food industry. The aim of the current study was to evaluate the antioxidant properties and antimicrobial activity of essential oils deriving from Syzygium aromaticum, Cymbopogon citratus and Lippia alba against lactic and pathogenic bacteria responsible for food-borne diseases. Essential oil antibacterial activity was assessed through disc diffusion and macrodilution tests conducted in a mixed lactic culture of Lactobacillus delbrueckii subsp. bulgaricus and Streptococcus thermophilus (YF-L903) and of Escherichia coli (ATCC 8739), Staphylococcus aureus (ATCC 6538), Salmonella enterica (ATCC 6017) strains. Based on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Capim cidreira; Clove; Lemongrass; Lactic acid bacteria; Probiotics.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000200450