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| Registros recuperados: 58 | |
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| Soares,Taliane Leila; Jesus,Onildo Nunes de; Souza,Everton Hilo de; Santos-Serejo,Janay Almeida dos; Oliveira,Eder Jorge de. |
| The characterization and viability of pollen grains are useful tools to guide crosses in breeding programs. The objective of this study was to describe the morphological patterns and viability of pollen grains from five accessions of Passiflora edulis f. flavicarpa O. Deg. and five accessions of Passiflora setacea DC. Pollen morphology descriptions were made using light microscopy and scanning electron microscopy, whereas the viability analysis was performed by in vitro germination and histochemical analysis (Lugol's solution and 2,3,5-triphenyltetrazolium chloride). Pollen grains assessed for germination were inoculated in culture medium containing Ca(NO3).4H2O (0.03%), Mg(SO4).7H2O (0.02%), KNO3 (0.01%), H3BO3 (0.01%), sucrose (15%) and agar (0.8%).... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: In vitro germination; Histochemistry; Scanning electron microscopy; Passifloraceae; Pollen tube. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400018 |
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| Costa,Fernanda Flores; Lima,Helena Regina Pinto; Cunha,Maura Da; Santos,Inês da Silva. |
| The Monimiaceae is represented in the Neotropical region by six genera. Macropeplus Perkins is a Brazilian genus comprising four species restricted to high-montane Atlantic Forest areas, which have not been properly examined from the anatomical point of view. This study characterizes the anatomical structure and histochemical aspects of the leaves of Macropeplus dentatus and M. ligustrinus, and adds to our taxonomic knowledge ofthe genus. The individuals studied were collected in the Serra dos Órgãos National Park and in the Caraça Natural Park in southeastern Brazil. Among the characteristics common to the two species, hypostomatic leaves, dorsiventral structure, paracytic stomata, a subepidermal layer, collateral vascular system in the form of an arc in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic Rain Forest; Histochemistry; Leaf anatomy; Macropeplus; Monimiaceae. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062010000300027 |
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| Silva,Maiara Matilde da; Boeger,Maria Regina Torres; Melo Júnior,João Carlos Ferreira de; Santos,Bruno Francisco Sant’Anna dos. |
| ABSTRACT Plant-herbivore interactions have directed the evolution of defense mechanisms in plants, which can vary intraspecifically according to environmental quality. This study evaluated variation in the production of antiherbivory defenses in plant species distributed along an environmental gradient of restinga. The study was performed in Parque Estadual Acaraí, state of Santa Catarina, Brazil. Three species of four plant formations with different abiotic conditions were selected for study. Specific leaf area; water, nitrogen and carbon content; and presence of phenols, tannins, lignin and alkaloids, were evaluated in leaves of ten plants per species per plant formation. The results indicated that Symphyopappus casarettoi possesses Low Nutritional... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coastal plain; Herbivore-plant interaction; Histochemistry; Parque Estadual Acaraí; Physical defense; Secondary metabolites. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400583 |
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| Abud, Haynna Fernandes; Araújo, Eduardo Fontes; Araujo, Roberto Fontes; Picoli, Edgard Augusto de Toledo; Gallão, Maria Izabel. |
| This study aimed to evaluate the structural changes and reserve deposition of malagueta and biquinho pepper seeds and to determine their chemical composition during ontogeny. The fruits were collected 25, 40, 55, 70, 85, and 100 days after anthesis (DAA). After collection, the seeds were extracted and fixed in FAA 50 and then stored in 70% ethanol. Subsequently, the seeds were embedded in methacrylate (Historesin) and sectioned with a microtome. The sections were stained with Toluidine blue O for anatomical analysis and Xylidine Ponceau, Periodic acid Schiff (PAS) and Lugol’s iodine solution for histochemical analysis. Sections were made using a cryomicrotome for acid phloroglucinol staining and Sudan III tests. Progressive lignification of the seed coat... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capsicum frutescens; C. chinense; Chemical composition; Histochemistry; Reserves.. |
| Ano: 2017 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32492 |
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| GUIMARÃES,JENNIFER; MARQUES,EDMILSON J.; WANDERLEY-TEIXEIRA,VALÉRIA; ALBUQUERQUE,AURISTELA C. DE; PASSOS,ELIANA M. DOS; SILVA,CÍNTHIA C.M.; TEIXEIRA,ÁLVARO A.C.. |
| This work aimed to evaluate the effects of Metarhizium anisopliae on Diatraea flavipennella and investigate their immune response. Was observed the effect of M. anisopliae against larvae of D. flavipennella sprayed at concentrations of 103, 104, 105 conidia / mL, in which showed differences relative the larval period, extending up to 72.0 days in treatment and 25.0 days in the control. The results for hemocytes revealed that the most frequent cells when sprayed at the concentrations of 103, 105, 107 conidia / mL were the prohemocytes, spherulocytes, plasmatocytes and granulocytes in relation to adipohemocytes and oenocytoids. The level of nitric oxide was different between the control and the concentration 107 spores / mL (24), while the activity of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Entomopathogen; Hemocytes; Histochemistry; Nitric oxide; Phenoloxidases; Sugarcane borer. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000401973 |
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| SOUZA,DOUGLAS M.F. DE; SÁ,RAFAELA D.; ARAÚJO,EVANI L.; RANDAU,KARINA P.. |
| ABSTRACT Solidago chilensis Meyen, belonging to the family Asteraceae, is a plant native to South America and the only representative of the genus in Brazil. This species is popularly known as “arnica” and is used to treat bruises, muscle pain and inflammation. The objective of this work was to contribute to the pharmacognostic standardization of S. chilensis. Cross-sections were obtained, by freehand, for microscopic analysis of root, stem and leaf; for these parts of the plant maceration was also performed according to the method of Jeffrey. For the leaf were still made paradermal sections, scanning electron microscopy analysis, phytochemical and histochemical tests. Thus, it was determined anatomical features useful for diagnosis of the species which,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anatomy; Arnica; Asteraceae; Histochemistry; Phytochemistry; Solidago chilensis. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000502107 |
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| FERNANDES,YANNE S.; TRINDADE,LUMA M.P.; REZENDE,MARIA HELENA; PAULA,JOSÉ R.; GONÇALVES,LETÍCIA A.. |
| Trichogonia cinerea is endemic to Brazil and occurs in areas of cerrado and campo rupestre. In this study, we characterized the glandular and non-glandular trichomes on the aerial parts of this species, determined the principal events in the development of the former, and identified the main constituents of the volatile oil produced in its aerial organs. Fully expanded leaves, internodes, florets, involucral bracts, and stem apices were used for the characterization of trichomes. Leaves, internodes, florets, and involucral bracts were examined by light microscopy and scanning electron microscopy, whereas stem apices were examined only by light microscopy. Branches in the reproductive phase were used for the extraction and determination of the composition... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Volatile oil; Histochemistry; Ontogeny; Secretory structure. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000100309 |
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| Mardegan Issa,João Paulo; Tiossi,Rodrigo; Mizusaki Iyomasa,Mamie. |
| The aim of this study was to evaluate alterations in the masseter muscle of 30 male guinea-pigs submitted to occlusal alteration. The animals were divided into 2 equal groups, the control group (C) only submitted to surgical stress, and the occlusal altered group (T) submitted to teeth extraction. Each group was subdivided into 3 groups, with 5 animals, for the following studies: macroscopy and vessels distribution, light microscopy and histochemical analysis, with animals' perfusion 2 months after surgery. Data were submitted to statistical analysis. Macroscopically, an anteroposterior orientation of the muscular fibers was found and statistical difference between C and T groups in width (p<0.05). Microscopically, C and T groups showed polygonal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Masseter muscle; Morphology; Histology; Histochemistry. |
| Ano: 2007 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452007000300003 |
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| Registros recuperados: 58 | |
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