oalib
Search Results: 1 - 10 of 100 matches for " "
All listed articles are free for downloading (OA Articles)
Page 1 /100
Display every page Item
Comprimento da estaca no desenvolvimento de mudas de alecrim-pimenta
Carvalho Júnior, Wellington Geraldo Oliveira;Melo, Marco Túlio Pinheiro de;Martins, Ernane Ronie;
Ciência Rural , 2009, DOI: 10.1590/S0103-84782009005000152
Abstract: this research aimed to evaluate the effect of shoot cutting length on the development of pepper-rosmarin seedlings (lippia sidoides cham.). the cuttings were obtained from stock plants of the medicinal vegetable garden of instituto de ciências agrárias/ufmg, montes claros, minas gerais, brazil. the experiment was conducted in greenhouse conditions with intermittent mist. the experimental design was totally randomized with four treatments consisted of different size intervals (5 to 8cm, 8.1 to 11cm, 11.1 to 14cm and 14.1 to 17cm), with five replications each. the amount of shooting and root, the shooting and root dry weight (g), the the longest root length (cm), the visual rooting evaluation and the rooting percentage were analysed. the results indicated that cutting length affects the development of pepper-rosmarin seedlings, especially shooting and root dry weight. the cuttings with 14.1 until 17cm presented the highest percentage of rooting and the largest average of the other variables, being the most recommended to be used in the propagation of pepper-rosmarin.
Utiliza o de diferentes tipos de estaca na produ o de mudas do porta-enxerto de videira, CV. IAC 572 'Jales'  [cached]
Le?o Patrícia Coelho de Souza
Ciência Rural , 2003,
Abstract: Este estudo teve como objetivo avaliar diferentes tipos de estacas sobre o enraizamento, brota o e desenvolvimento de mudas do porta-enxerto de videira cv. IAC 572. O experimento foi conduzido no viveiro do Servi o de Negócios Tecnológicos (SNT), da Embrapa, em Petrolina-PE, utilizando-se delineamento experimental inteiramente casualizado com cinco tratamentos e quatro repeti es, sendo vinte e cinco estacas por parcela. Os tratamentos foram: estacas lenhosas com três gemas, estacas lenhosas com duas gemas, estacas lenhosas com uma gema, estacas herbáceas com duas gemas e estacas herbáceas com uma gema. Aos 60 dias após o plantio, as estacas lenhosas com três gemas apresentaram os maiores percentuais de enraizamento (99%) e brota o (99%) e melhor desenvolvimento da parte aérea e do sistema radicular, entretanto, n o diferiu dos valores obtidos para enraizamento e brota o pelo emprego de estacas lenhosas com uma gema.
Produ o de biomassa e teor de óleo essencial em fun o da idade e época de colheita em plantas de hortel -japonesa = Biomass yield and essential oil content in function of the age and harvest period of mint plants
Jorge Henrique Chagas,Jose Eduardo Brasil Pereira Pinto,Suzan Kelly Vilela Bertolucci,Fúlvia Maria do Santos
Acta Scientiarum : Agronomy , 2011,
Abstract: O presente estudo objetivou avaliar o efeito da época e da idade da planta na colheita na produ o de biomassa seca e no teor percentual do óleo essencial e o tempo de armazenamento das plantas de Mentha arvensis L. Foram instalados dois experimentos. No primeiro, foi avaliado o efeito de três idades na colheita, 80, 100 e 120 dias após o transplantio, e três idades na segunda colheita, 60, 75 e 90 dias. O delineamento utilizado foi de blocos casualizados, com quatro repeti es, em esquema fatorial 3 x 3. No segundo experimento, foram avaliadas três épocas de colheita: início de janeiro, final de mar o einício de junho. O material colhido foi seco em estufa a 37oC, calculada a biomassa seca da parte aérea, extraído o óleo essencial em aparelho de Clevenger modificado e calculado o seu teor percentual. O teor percentual de óleo essencial e a biomassa seca da parte aérea variaram conforme a idade da primeira colheita da planta. A idade da planta na primeira colheita influenciou o teor de óleo essencial e a biomassa seca da parte aérea, em resposta às idades das plantas na segunda colheita. A época de colheita em que se obteve o maior teor de óleo essencial foi no início do mês de junho. This present work aimed to evaluate the effect of period and age the plants on harvest, dry biomass production, essential oil percentage content and storage period of mint (Mentha arvensis L.) plants. Two experiments were set: the first evaluated the effect of three harvest ages (80, 100 and 120 days) after transplanting, and three ages at the second harvest (60, 75 and 90 days). A randomized blocks design was used, with four replications in a 3 x 3 factorial scheme. In the second experiment, three harvest periods were evaluated – early January, late March and early June. The harvested material was dried at 37°C, the dry biomass of the aerial parts was calculated, the essential oil was extracted in a modified Clevenger instrument and its percentage contents were calculated. Plant age at first harvest did influence essential oil content and dry biomass of the aerialparts in response to plant age at the second harvest. The harvest period in which the essential oil content was higher was in early June.
Substratos na produ??o hidrop?nica de mudas de hortel?
Paulus, Dalva;Medeiros, Sandro L.P.;Santos, Osmar S.;Riffel, Cinei;Fabbrin, Eliseu G.;Paulus, Eloi;
Horticultura Brasileira , 2005, DOI: 10.1590/S0102-05362005000100010
Abstract: the normal growth and the formation of plants with quality for commercialization depends on good seedlings production. the right substrate has to be used. hydroponic cultivation holds certain advantages: saving substrate, resulting in good establishment of the crop and quality of seedlings production. the experiment was carried out at the university of santa maria, rio grande do sul state, brazil. the effect of substrates (without substrate, phenolic foam substrate and organicmineral substrates) was determined on the production of mint (mentha x villosa) transplants by cuttings vegetable methods in hydroponics. the experimental design was a completely randomized design with three treatments and 20 replications, one plant being used in each repetition. we evaluated: height and number of leaves at 7; 14; 21 and 28 days after the transplant. fresh and dry matter weight 35 days after transplant were also analyzed. the phenolic foam substrate showed the best results in relation to the production of fresh and dry matter. phenolic foam and the organicmineral substrates were not significantly different, but were significantly superior to the treatment (direct in solution) without substrate.
A imigra o japonesa e sua contribui o à saúde  [cached]
Nilsa Sumie Yamashita Wadt
Saúde Coletiva , 2008,
Abstract: Este ensayo se acerca a la relación de la inmigración japonesa con aspectos de salud.
Micropropaga??o, aclimatiza??o, teor e composi??o química do óleo essencial de genótipos de hortel? japonesa
Arrigoni-Blank, Maria de Fátima;Costa, Andréa Santos;Fonseca, Valéria Oliveira;Alves, Pericles Barreto;Blank, Arie Fitzgerald;
Revista Ciência Agron?mica , 2011, DOI: 10.1590/S1806-66902011000100022
Abstract: japanese mint (mentha arvensis l.) is an aromatic species originated from south china and its essential oil is rich in menthol, which is used in the pharmaceutical, food and cosmetic industries. the aim of this work was to develop a protocol for micropropagation and acclimatization of japanese mint genotypes and analyze the chemical composition of the essential oils from micropropagated and not micropropagated plants. nodal segments are the most indicated for micropropagation of the m. arvensis genotypes. the concentration of 4.4 μm of iaa promoved higher number of shoots and leaves per explant of the ma701-02 genotype when compared with the others. the use of 4,4 μm of iaa and 9,3 μm of kin + 8,9 μm of bap + 2,2 μm of iaa resulted in major dry mass accumulation at genotype ma701-02. major dry mass accumulation of genotype ma701-04 was promoted when 8,9 μm bap + 5,4 μm naa was used. the substrate coconut dust + 1 g l-1 of limestone + 12 g l-1 of biosafra? (3-12-6) can be indicated to acclimatization of micropropagated plantlets of the tested japanese mint genotypes. micropropagation did not change essential oil content and 17 chemical constituents were indentified, totalizing 92 to 99%.
Efeito de substratos agrícolas na produ??o de mudas de hortel? propagadas por estaquia
Paulus, Dalva;Paulus, Eloi;
Horticultura Brasileira , 2007, DOI: 10.1590/S0102-05362007000400020
Abstract: the use of appropriated substrates for each vegetative species is important to obtain seedlings and plants with commercial quality. the experiment was carried out in rio grande do sul state, brazil. the effect of substrates (organic-mineral, carbonized rice husk + sand (1:1) and carbonized rice husk + soil (1:1)) was determined for the production of appropriated mint seedlings (mentha arvensis l.) for field cultivation. the experiment was performed in two phases: production of the seedlings under protected environment and growth of the plants in field. the experimental design was a completely randomized design with three treatments and 15 replications. we evaluated the height and number of leaves at 7; 14; 21 and 28 days after the transplant; index of mortality; fresh and dry matter, 35 days after transplanting date. the organic-mineral substrates presented the best results in relation to the production of fresh (7.01 g planta-1) and dry matter (2.40 g planta-1). the mixture of carbonized rice husk + soil or the sand are adequated to be used in the production of mint seedlings in field.
Dinamica do enraizamento de microestacas e miniestacas de clones de Eucalyptus grandis  [cached]
Titon Miranda,Xavier Aloisio,Otoni Wagner Campos
Revista árvore , 2002,
Abstract: O presente estudo teve por objetivo avaliar a dinamica de enraizamento de microestacas e miniestacas, mediante o acompanhamento da emiss o e do desenvolvimento de raízes de quatro clones de Eucalyptus grandis. Foram utilizadas microestacas provenientes de brota es coletadas em plantas rejuvenescidas por micropropaga o e miniestacas oriundas de brota es coletadas de miniestacas enraizadas originadas de mudas propagadas pelo processo de estaquia convencional. Os resultados indicaram a maior habilidade de enraizamento das microestacas em rela o às miniestacas, evidenciada através do número de raízes/estaca, comprimento total de raiz/estaca, comprimento da maior raiz/estaca, comprimento médio de raízes/estaca e peso de matéria seca de raízes.
Produ??o de biomassa e teor de óleo essencial em fun??o da idade e época de colheita em plantas de hortel?-japonesa
Chagas, Jorge Henrique;Pinto, Jose Eduardo Brasil Pereira;Bertolucci, Suzan Kelly Vilela;Santos, Fúlvia Maria do;
Acta Scientiarum. Agronomy , 2011, DOI: 10.4025/actasciagron.v33i2.5698
Abstract: this present work aimed to evaluate the effect of period and age the plants on harvest, dry biomass production, essential oil percentage content and storage period of mint (mentha arvensis l.) plants. two experiments were set: the first evaluated the effect of three harvest ages (80, 100 and 120 days) after transplanting, and three ages at the second harvest (60, 75 and 90 days). a randomized blocks design was used, with four replications in a 3 x 3 factorial scheme. in the second experiment, three harvest periods were evaluated - early january, late march and early june. the harvested material was dried at 37°c, the dry biomass of the aerial parts was calculated, the essential oil was extracted in a modified clevenger instrument and its percentage contents were calculated. plant age at first harvest did influence essential oil content and dry biomass of the aerial parts in response to plant age at the second harvest. the harvest period in which the essential oil content was higher was in early june.
La laca japonesa de exportación en Espa a. Del estilo Namban al pictórico
Kawamura, Yayoi
Archivo Espa?ol de Arte , 2009,
Abstract: The paper studies styles and techniques of three cabinets of Japanese lacquer of the 16th and 17th centuries. Se estudias los estilos y técnicas de tres escritorios de laca japonesa de los siglos XVI y XVII.
Page 1 /100
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.