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| Registros recuperados: 88 | |
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| Giurizatto, Maria Izabel Kruger; Iagro; Robaina, Antonio Dias; UFGD; Gonçalves, Manoel Carlos; UFGD; Marchetti, Marlene Estevão; UFGD. |
| A técnica de hidratação controlada de sementes vem sendo utilizada como método de condicionamento fisiológico, tanto para sementes deterioradas como para sementes altamente sensíveis à embebição rápida, ou a interação entre ambas, objetivando melhorar o desempenho destas no campo. A hidratação pode ser seguida por secagem, se as sementes não tiverem atingido a fase III da germinação, facilitando, assim, o subseqüente manuseio, armazenamento e semeadura no campo. O objetivo do presente trabalho foi avaliar os efeitos do hidrocondicionamento na qualidade fisiológica de sementes de soja, sendo estas sementes hidrocondicionadas por períodos de 0, 20 e 24h, secas e armazenadas por 0, 90, 180 e 270 dias em câmara seca, com umidade e temperatura controladas. O... |
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Palavras-chave: 5.01.03.05-9 Melhoramento Vegetal Glycine max; Storage; Viability; Vigor Glycine max; Storage; Viability; Vigor. |
| Ano: 2008 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5972 |
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| Ortiz, Thiago Alberto; Moritz, Aline; Oliveira, Mariana Alves de; Takahashi, Lúcia Sadayo Assari. |
| The objective of the present study was to evaluate pitaya seed germination under different hydrogen potentials, with or without fungicide treatment. A completely randomized design was employed under a 3 x 13 x 2 factorial scheme, corresponding to three pitaya species (white pitaya, pitaya hybrid I, pitaya hybrid II), thirteen hydrogen potentials (3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, and 9.0) and two fungicide conditions (presence and absence), with four replications. The percentage of germination, germination speed index and mean germination time were evaluated. The data were subjected to ANOVA, and the means were compared using the Scott-Knott test (p < 0.05). The pH influenced the germination speed index in white pitaya. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hylocereus undatus H; Costaricensis; Carboxim+thiran; Vigor; Viability; Physiological quality Tecnologia e produção de sementes. |
| Ano: 2014 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/18088 |
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| Sales, Juliana de Fátima; Instituto Federal Goiano; Pinto, José Eduardo Brasil Pereira; Universidade Federal de Lavras; Oliveira, João Almir de; Universidade Federal de Lavras; Botrel, Priscila Pereira; Universidade Federal de Lavras; Silva, Fabiano Guimarães; Instituto Federal Goiano; Corrêa, Ricardo Monteiro; Instituto Federal Minas Gerais. |
| This study evaluated the effect of light, temperature, physiologic stage at harvest and length of time on the germination of Hyptis marrubioides seeds. Two trials were conducted. The first experiment was performed immediately after the seed harvest and consisted of a 2 x 3 x 3 factorial design with 2 environmental conditions (light and dark), 3 temperatures (20, 30 and 20/30ºC) and 3 seed harvest times (green colored seeds, light brown seeds and dark brown seeds). The second experiment was conducted in the presence of light at a temperature of 30ºC and consisted of a 4 x 3 factorial design, with 4 storage times (0, 6, 12 and 18 months) and the 3 three harvest physiologic stages used in the previous experiment. Both of the experiments were conducted in... |
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Palavras-chave: 5.01.03.00-8 medicinal plant; Viability; Lamiaceae Fitotecnia medicinal plant; Viability; Lamiaceae. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/4611 |
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| Días,Gabrielen de M. Gomes; Rodrigues,Filipe Almendagna; Soares,J. Dória Rodrigues; Pasqual,Moacir; Carvalho,A. Cristina Portugal- Pinto de. |
| Torch ginger Etlingera elatior (Jack) R.M. Smith is a tropical herb-like, rhizome-like and perennial plant that possesses inflorescences that are both pretty and showy at different colour shades, and have a great visual appeal. Producing seedlings at a high enough level when done conventionally by the division of tussocks, has high costs and phytosanitary problems. The objective of this study was to evaluate the induction of somatic embryogenesis and its potential for subsequent plant regeneration in torch ginger. Rhizomes, leaves and roots from the seedlings grown in vitro were used as explant segments. The different explants were cultured on MS medium supplemented with 30 g L-1 sucrose, and it was solidified with 5.5 g L-1 of agar. The effect of 2.4-D... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zingiberaceae; Etlingera elatior; Viability. |
| Ano: 2014 |
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952014000200004 |
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| DRESCH,DAIANE M.; MASETTO,TATHIANA E.; SCALON,SILVANA P.Q.. |
| The aim of this study was to evaluate the sensitivity of Campomanesia adamantium seeds to desiccation by drying in activated silica gel (fast) and under laboratory conditions (slow). To assess the sensitivity of the seeds to desiccation, we used drying with silica gel and drying under laboratory conditions (25 °C), in order to obtain seeds with moisture content of 45, 35, 30, 25, 20, 15, 10 and 5%. The physiological potential of the seeds after desiccation was evaluated by measuring primary root protrusion, percentage of normal seedlings, germination seed index, seedling length, total seedling dry mass, electrical conductivity and DNA and RNA integrities. The C. adamantium seeds were sensitive to desiccation and to a reduction in moisture content to 21.1%... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cerrado; DNA; Drying; RNA; Viability. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000502217 |
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| Peak,Emily; Hoffmann,Karl F. |
| Parasitic worms (helminths) within the Phyla Nematoda and Platyhelminthes are responsible for some of the most debilitating and chronic infectious diseases of human and animal populations across the globe. As no subunit vaccine for any parasitic helminth is close to being developed, the frontline strategy for intervention is administration of therapeutic, anthelmintic drugs. Worryingly, and unsurprising due to co-evolutionary mechanisms, many of these worms are developing resistance to the limited compound classes currently being used. This unfortunate reality has led to a renaissance in next generation anthelmintic discovery within both academic and industrial sectors. However, a major bottleneck in this process is the lack of quantitative methods for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Helminth; Schistosome; Nematode; Viability; Phenotype. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000200024 |
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| MOZDARANI,HOSSEIN; MORADI,SHABNAM Z. |
| This study was desµgned to investµgate the effect of vitrification and post-thaw survival and chromosomal aberrations caused by vitrification of vitrified 8-cell mouse embryos in comparison with a controligroup. To this purpose the survival rate and the frequency of chromosomal aberrations were assessed in frozen-thawed 8-cell mouse embryos after various storage durations in the presence of ethyleneiglycol as cryoprotectant. eight-cell mouse embryos were obtained from NMRI mice 3 days after mating. Retrieved embryos were transferred to vitrification solution containing ethyleneiglycol as cryoprotectant, then transferred into a vitrification straw using standard technique, and vitrified in liquid nitrogen. Sixigroups of embryos according to storage duration... |
| Tipo: Journal article |
Palavras-chave: Cryopreservation; Vitrification; Mouse embryo; Viability; Chromosome abnormalities. |
| Ano: 2007 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602007000400004 |
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| Bertol,Melina Andrea Formighieri; Weiss,Romildo Romualdo; Thomaz-Soccol,Vanete; Kozicki,Luiz Ernandes; Fujita,Aline Silva; Abreu,Renata Azevedo de; Green,Kerriel Thandile. |
| The aim of this study was to evaluate the viability of bull spermatozoa collected from the cauda epididymis stored at 18-20°C, which were compared with semen collected by electro-ejaculation method and preserved at 5°C. Ten pairs of testes from Tabapuã bulls were removed by orchiectomy and stored for 6 (G6), 12 (G12), 18 (G18), 24 (G24) and 30 (G30) h at room temperature (18-20°C). Seven days before orchiectomy, semen was collected by electro-ejaculation method. The sperm parameters evaluated were: sperm motility, vigor, concentration, morphology and acrosome defects. Sperm motility declined (p<0.05) when spermatozoa were stored for 30 h in the epididymis. The spermatozoa from the epididymis showed lower sperm motility than that of spermatozoa collected... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bull; Epididymis; Orchiectomy; Sperm; Room temperature; Viability. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000500008 |
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| Zhang,Yu; Zheng,Wei; Gu,Jian-Fei; Ni,Jian; Wang,Ling; Tang,Zhen-Xing; Shi,Lu-E. |
| ABSTRACTIn this work, the mixture of alginate and soy protein isolate used as a wall material was developed to encapsulateEnterococcus faecalis HZNU P2 (E. faecalis HZNU P2). The survival ability in the simulated gastric fluid (SGF) and bile salt solution, storage stability at different temperatures and release properties in the simulated intestinal fluid (SIF) of encapsulated cells were assessed. The results showed that encapsulation could offer sufficient protection toE. faecalis HZNU P2. The viability of encapsulatedE. faecalis HZNU P2 did not decrease in SGF at pH 2.5 or 2.0 after 2 h incubation, while free cells were reduced from 11 to 9.85 log CFU/mL in SGF (pH 2.5) at the same exposure time. Only minor viability of encapsulatedE. faecalis HZNU P2... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Enterococcus faecalis; Encapsulation; Soy protein isolate; Alginate; Stability; Viability. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132015000500805 |
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| Ono,Elizabeth Orika; Leonel,Sarita; Duarte Filho,Jayme; Rodrigues,João Domingos. |
| The effects of storage time and exogenous gibberellic acid on lychee seeds germination were studied. The seeds were removed from ripe fruits, washed, dried, stored at 8°C for 0, 15 and 30 days, and soaked during 24 hours in water and GA3 at 50, 100 and 200 mg.L-1 solutions. As the storage period increased, the germination capacity was lost, and the seeds had a short germinability after 30-day storage period. Gibberellic acid had not significant effect on enhancing both the germination percentage and rate. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gibberellic acid; Gibberellins; Deterioration; Viability; Recalcitrant seed. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000400015 |
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| Linan,Lamia Zuniga; Lima,Nadson Murilo Nascimento; Benatti,Carol; Xavier,Mariana; Rodrigues,Ana A.; Manenti,Flavio; Jardini,Andre; Maciel Filho,Rubens; Gilioli,Rovilson. |
| ABSTRACT A cytotoxicity study is performed on a poly(methyl methacrylate) polymer (PMMA) to be used for the fabrication of bone tissue by Rapid Prototyping (RP). The solution polymerization is conducted in a pilot plant reactor using more appropriated reagents in consideration of the medical application. Moreover, the polymer is efficiently handled to avoid the side effect of the monomer, reducing the concentration of this specie to 287,731 µg MMA/kg PMMA. The cytotoxicity of the polymer is determined through growth monitoring, adherence and morphology of L-929 cells. Additionally, MTT and LIVE/DEAD tests are performed. The results showed continuous and progressive growth of the cells on the surface of the specimens. Moreover, the material did not... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: PMMA; Synthesis; Cytotoxicity; Viability; Mesenchymal cells.. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100601 |
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| Treitinger,Aricio; Spada,Celso; Masokawa,Ivete Yoshico; Verdi,Júlio César Vidal; Silveira,Mariette Van Der Sander; Luis,Magali Chaves; Reis,Marcellus; Ferreira,Silvia Inês Alejandra Cordova de Pires; Abdalla,Dulcinéia Saes Parra. |
| N-acetyl-L-cysteine (NAC) has been proposed as an additional therapeutic agent for AIDS patients because it reduces human immunodeficiency virus type 1 (HIV-1) replication in stimulated CD4+ lymphocytes, and it ameliorates immunological reactivity. In a randomized, 180-day, double-blind, placebo-controlled trial performed with HIV-infected patients classified as A2 and A3 according to the criteria of the Center for Disease Control and Prevention, we investigated the effects of oral administration of NAC on HIV-infected patients undergoing their first anti-retroviral therapy; viral load, CD4+ lymphocyte, lymphocyte viability and apoptosis, and TNF-alpha and IL-8 levels were determined. Sixteen patients who received anti-retroviral therapy plus a placebo... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: N-acetylcysteine; Apoptosis; Viability; HIV; Glutathione; TNF-alpha; IL-8. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702004000500005 |
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| Xie,X.X.; Ma,Y.F.; Wang,Q.S.; Chen,Z.L.; Liao,R.R.; Pan,Y.C.. |
| As an essential trace element, copper can be toxic in mammalian cells when present in excess. Metallothioneins (MTs) are small, cysteine-rich proteins that avidly bind copper and thus play an important role in detoxification. Yeast CUP1 is a member of the MT gene family. The aim of this study was to determine whether yeast CUP1 could bind copper effectively and protect cells against copper stress. In this study, CUP1 expression was determined by quantitative real-time PCR, and copper content was detected by inductively coupled plasma mass spectrometry. Production of intracellular reactive oxygen species (ROS) was evaluated using the 2',7'-dichlorofluorescein-diacetate (DCFH-DA) assay. Cellular viability was detected using the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Yeast; Overexpression; Copper stress; Viability; ROS. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2015000700616 |
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| Registros recuperados: 88 | |
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