Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados Rev. Ciênc. Agron. (5) Ciência Rural (1) Rev. Bras. Frutic. (1) Autor Pereira,Francisco Elder Carlos Bezerra (7) Martins,Cibele Chalita (5) Jeromini,Tatiane Sanches (4) Silva,Givanildo Zildo da (3) Torres,Salvador Barros (3) Benedito,Clarisse Pereira (2) Barros,Renato Teo (1) Bruno,Riselane de Lucena Alcântara (1) Gomes Junior,Francisco Guilhien (1) Gomes,Maryjane Diniz de Araújo (1) Gomes-Junior,Francisco Guilhien (1) Grangeiro,Leilson Costa (1) Melo,Lilian Faria de (1) Silva,Edvan Costa da (1) Silva,Francisca Gleiciane da (1) Silva,Maria Isabel de Lima (1) Mais... Palavra-chave Germination (3) Image analysis (2) Panicum maximum (2) Vigor (2) Abelmoschus esculentus Malvaceae vigor (1) Capsicum baccatum (1) Colorimetria de frutos (1) Control quality (1) Dormancy (1) Forage grasses (1) Fruit trees (1) Germinação (1) Grass forage (1) Marandu (1) Maturidade fisiológica (1) Physiological quality (1) Potencial fisiológico. (1) Principal component (1) Principal component analysis (1) Purity (1) Mais... Tipo do documento Info:eu-repo/semantics/article (7) Ano 2020 (1) 2019 (2) 2018 (2) 2014 (2) País Brazil (7) Idioma Inglês (5) Português (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 7 Primeira ... 1 ... Última Conditioning in the promotion and uniformization of Umbu seed germination Rev. Bras. Frutic. Barros,Renato Teo; Martins,Cibele Chalita; Pereira,Francisco Elder Carlos Bezerra; Silva,Givanildo Zildo da. Abstract Seed dormancy may decrease during storage and some environmental conditions may accelerate this process. The aim of this work was to determine efficient techniques to condition umbu seeds in order to promote and standardize their germination. Seeds were stored for 180 days in paper bags kept in five ambient conditions: laboratory (25 ºC and 55% RH); warm oven (40 °C and 53% RH); hot oven (50 °C and 49% RH); dry chamber (18 °C and 65% RH) and cold chamber (10 °C and 65% RH). Seed quality was evaluated every 60 days by means of the following tests and determinations: water content; germination test (25 °C and 55% RH, weekly evaluated up to 91 days after sowing); first count test (14 days); germination rate index; mean germination time and... Tipo: Info:eu-repo/semantics/article Palavras-chave: Storage; Dormancy; Germination; Fruit trees; Spondias tuberosa. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000102001 Qualidade fisiológica de sementes de pimenta em função da idade e do tempo de repouso pós-colheita dos frutos Rev. Ciênc. Agron. Pereira,Francisco Elder Carlos Bezerra; Torres,Salvador Barros; Silva,Maria Isabel de Lima; Grangeiro,Leilson Costa; Benedito,Clarisse Pereira. Um aspecto importante da produção de sementes é a determinação da maturidade fisiológica e do momento adequado de colheita, visando obter sementes de alta qualidade, minimizando a sua deterioração no campo. Diante disso, esta pesquisa teve por objetivo estudar a influência do estado de maturação dos frutos e dos períodos de repouso pós-colheita na qualidade fisiológica de sementes de pimenta (Capsicum baccatum L.), variedade Dedo-de-Moça, para determinação do ponto adequado para colheita das sementes. Os frutos foram colhidos em quatro estádios de maturação, com base na sua coloração: verde intenso (15 DAA), verde amarelado (25 DAA), verde avermelhado (35 DAA) e vermelho intenso (45 DAA) e submetidos ao armazenamento por 0; 5 e 10 dias para então, proceder... Tipo: Info:eu-repo/semantics/article Palavras-chave: Capsicum baccatum; Germinação; Maturidade fisiológica; Colorimetria de frutos. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000400011 The use of X-ray to evaluate Brachiaria brizantha seeds quality during seed processing Rev. Ciênc. Agron. Jeromini,Tatiane Sanches; Martins,Cibele Chalita; Pereira,Francisco Elder Carlos Bezerra; Gomes Junior,Francisco Guilhien. ABSTRACT The X-ray test permits the visualization of the internal structures of seeds in a non-destructive way making thus possible the diagnosis of causes of seed low germination and purity. The objective of this project was to evaluate the quality of Brachiaria brizantha seeds by means of the X-ray test and the effect of the processing stage. The seeds were sampled before processing and after going through the air and screen machine, and the first and the second gravity tables. Seeds were evaluated as to water content, purity, weight of a thousand seeds, germination, and the X-ray test. The treatment replications were distributed according to a complete random design with four replications. The X-ray test permit to verify the completely full seeds as... Tipo: Info:eu-repo/semantics/article Palavras-chave: Forage grasses; Image analysis; Marandu; Germination. Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000300439 Effects of processing phases on the quality of massai grass seeds Rev. Ciênc. Agron. Melo,Lilian Faria de; Martins,Cibele Chalita; Silva,Givanildo Zildo da; Pereira,Francisco Elder Carlos Bezerra; Jeromini,Tatiane Sanches. ABSTRACT Massai grass is an important tropical forage grass. The harvested seeds upon being received by the company, are found to be contaminated with impurities which are removable by processing machines. This procedure is necessary to produce seeds of a quality level within standards established for commercialization and sowing purposes. The objective of this project was to evaluate the effects of processing phases on the physical and physiological quality of massai grass (Panicum maximum x P. infestum, cv. Massai) seeds for commercialization purposes. Seeds were sampled before processing and after leaving the air and screen machine (upper and intermediary screens and bottom); first gravity table (drift, upper and intermediate spouts); treating machine;... Tipo: Info:eu-repo/semantics/article Palavras-chave: Panicum maximum; Germination; Vigor; Purity. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000200259 Tests to evaluate the physiological potential of Mombasa grass seeds Rev. Ciênc. Agron. Pereira,Francisco Elder Carlos Bezerra; Martins,Cibele Chalita; Jeromini,Tatiane Sanches; Gomes-Junior,Francisco Guilhien; Torres,Salvador Barros. ABSTRACT Identifying fast and efficient tests to evaluate the vigor of forage grass seed lots is desirable in the quality control programs of the companies in this sector. Thus, the objective was to evaluate the efficiency of vigor tests on the physiological quality of seeds of Panicum maximum, cv. Mombasa, for the differentiation of lots and prediction of seedling emergence in the field. Nineteen seed lots were subjected to evaluations of moisture content, germination, first count, germination speed index, seedling emergence in sand, first count of seedling emergence in sand, seedling root and shoot lengths, seedling emergence in the field and computerized analysis of seedling images obtained through SVIS® software. The experimental design was completely... Tipo: Info:eu-repo/semantics/article Palavras-chave: Panicum maximum; SVIS®; Principal component; Vigor; Image analysis. Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000100407 Multivariate analysis and vigor tests to determine the quality of Brachiaria decumbens seeds Rev. Ciênc. Agron. Silva,Givanildo Zildo da; Martins,Cibele Chalita; Bruno,Riselane de Lucena Alcântara; Pereira,Francisco Elder Carlos Bezerra; Jeromini,Tatiane Sanches. ABSTRACT This study aimed to verify the efficiency of multivariate analysis in the identification of promising vigor tests for the evaluation of the physiological quality of seed lots of Brachiaria decumbens cv. Basilisk. Seeds of B. decumbens cv. Basilisk were tested for the following parameters: water content, germination, first germination count, cold test, electrical conductivity, seedling growth, seedling dry mass, first count and emergence percentage of seedlings in laboratory substrate, and seedling emergence in the field. The data obtained in each test-all completely randomized experimental designs-were analyzed separately by means of analysis of variance, Scott-Knott’s test, and multivariate analysis. Principal component analysis is efficient to... Tipo: Info:eu-repo/semantics/article Palavras-chave: Physiological quality; Control quality; Principal component analysis; Grass forage; Seedling emergence in field. Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000200291 Diferenciação de lotes de sementes de quiabo pelo teste de envelhecimento acelerado Ciência Rural Torres,Salvador Barros; Silva,Francisca Gleiciane da; Gomes,Maryjane Diniz de Araújo; Benedito,Clarisse Pereira; Pereira,Francisco Elder Carlos Bezerra; Silva,Edvan Costa da. Os testes de germinação e de vigor são componentes essenciais do processo de controle de qualidade das empresas produtoras de sementes, e o teste de envelhecimento acelerado é um dos mais utilizados para avaliação do vigor de sementes. Nesse sentido, a pesquisa teve como objetivo estudar a metodologia do teste de envelhecimento acelerado, visando à identificação de diferentes níveis de vigor de lotes de sementes de quiabo (Abelmoschus esculentus (L.) Moench). Para isso, quatro lotes de sementes da cultivar 'Colhe Bem' e cinco lotes da cultivar 'Santa Cruz 47' foram submetidos às seguintes avaliações: germinação, emergência de plântulas, envelhecimento acelerado tradicional e em solução saturada com NaCl (38 e 41ºC durante 24, 48, 72 e 96 horas) e grau de... Tipo: Info:eu-repo/semantics/article Palavras-chave: Abelmoschus esculentus Malvaceae vigor; Potencial fisiológico.. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014001202103 Registros recuperados: 7 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco