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| Registros recuperados: 33 | |
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| Berdeja Arbeu, Raúl. |
| En cítricos existen pocos trabajos en donde se estudia el efecto de los portainjertos en las características estomáticas en hojas de lima 'Persa' y anatomía de xilema de los portainjertos y lima 'Persa' y su correlación con vigor de planta, por lo que se realizaron dos experimentos. En el primero se estudió la combinación lima 'Persa' en 11 portainjertos cítricos (citranges 'C32', 'C35', 'Benton', 'Carrizo', 'Florida' y 'Morton', los mandarinos 'Amblicarpa' y 'Cleopatra', limón 'Volkameriano', 'Flying Dragon' y naranjo 'Agrio' como testigo), los portainjertos modificaron el número de estomas (287 hasta 331 por mm2), células epidérmicas (2871 a 2269 por mm2), índice estomático (8.95 a 9.86) y tamaño de estomas (23.24 a 25.95 µm) y presentan diferencias... |
| Tipo: Tesis |
Palavras-chave: Citrus latifolia; Portainjertos; Estomas; Anatomía de xilema; Doctorado; Fruticultura; Citrus latifolia; Rootstocks; Stomata; Xylem anatomy; Development. |
| Ano: 2009 |
URL: http://hdl.handle.net/10521/1366 |
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| Juárez Cruz, Aída. |
| Entre las especies con potencial productivo, sobresalen la cruceta o jacube (Acanthocereus tetragonus), el nopal de cruz (Acanthocereus subinermis) y la pitahaya (Hylocereus undatus.) porque tienen uso como cerco vivo, ornamento, medicina y alimento en diferentes regiones de México. Sin embargo, existe poca información sobre el valor nutritivo y características anatómicas de éstos materiales, principalmente del género Acanthocereus; por lo anterior, la presente investigación tuvo como objetivo generar información que permita sustentar el uso de tallos jóvenes de estas especies como parte de la dieta humana, y también conocer aspectos anatómicos que pueden ser útiles en su manejo agronómico. La investigación se realizó en un huerto ubicado en Tepoztlán,... |
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Palavras-chave: Jacube; Cruceta; Nopal de cruz; Pitahaya; Análisis proximal; Estomas; Proximal analysis; Stomata; Maestría; Fisiología Vegetal. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/375 |
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| Berdeja Arbeu, Raúl. |
| En cítricos existen pocos trabajos en donde se estudia el efecto de los portainjertos en las características estomáticas en hojas de lima 'Persa' y anatomía de xilema de los portainjertos y lima 'Persa' y su correlación con vigor de planta, por lo que se realizaron dos experimentos. En el primero se estudió la combinación lima 'Persa' en 11 portainjertos cítricos (citranges 'C32', 'C35', 'Benton', 'Carrizo', 'Florida' y 'Morton', los mandarinos 'Amblicarpa' y 'Cleopatra', limón 'Volkameriano', 'Flying Dragon' y naranjo 'Agrio' como testigo), los portainjertos modificaron el número de estomas (287 hasta 331 por mm2), células epidérmicas (2871 a 2269 por mm2), índice estomático (8.95 a 9.86) y tamaño de estomas (23.24 a 25.95 µm) y presentan diferencias... |
| Tipo: Tesis |
Palavras-chave: Citrus latifolia; Portainjertos; Estomas; Anatomía de xilema; Desarrollo index words: Citrus latifolia; Rootstocks; Stomata; Xylem anatomy; Development. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/1034 |
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| Ledesma Miramontes, Alejandro. |
| En frutales, debido a que no es práctico eliminar toda la planta para evaluar fotosíntesis es necesario utilizar estimadores para este proceso. Con el fin de conocer las diferencias que existen en la actividad fotosintética en seis selecciones injertadas de zapote mamey se evaluaron diferentes estimadores. La investigación se llevó a cabo en una huerta comercial en el municipio de Alpoyeca Gro. Se utilizaron árboles de 3 y 4 años. Las variables evaluadas fueron: peso específico de la hoja (PEH), grosor de la hoja, frecuencia y tamaño de estomas, contenido de clorofila, concentración de azúcares y medición del intercambio de gases. El diseño experimental utilizado, fue completamente al azar, con diferente número de repeticiones dependiendo de la variable.... |
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Palavras-chave: Pouteria sapota; Sapotaceae; Grosor de hoja; Estomas; Azúcares; Leaf thickness; Stomata; Sugars; Maestría; Fruticultura. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/411 |
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| Ledesma Miramontes, Alejandro. |
| En frutales, debido a que no es práctico eliminar toda la planta para evaluar fotosíntesis es necesario utilizar estimadores para este proceso. Con el fin de conocer las diferencias que existen en la actividad fotosintética en seis selecciones injertadas de zapote mamey se evaluaron diferentes estimadores. La investigación se llevó a cabo en una huerta comercial en el municipio de Alpoyeca Gro. Se utilizaron árboles de 3 y 4 años. Las variables evaluadas fueron: peso específico de la hoja (PEH), grosor de la hoja, frecuencia y tamaño de estomas, contenido de clorofila, concentración de azúcares y medición del intercambio de gases. El diseño experimental utilizado, fue completamente al azar, con diferente número de repeticiones dependiendo de la variable.... |
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Palavras-chave: Pouteria sapota; Sapotaceae; Grosor de hoja; Estomas; Azúcares; Leaf thickness; Stomata; Sugars; Maestría; Fruticultura. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/411 |
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| Babalola Kadiri,Akeem; Dele Olowokudejo,James. |
| The epidermal features of the leaves of the six West African species of Afzelia were examined and compared using light and scanning electron microscopy. The leaves are hypostomatic in all species and stomatal type is paracytic. Anticlinal walls may be undulate or straight-curved and stomatal index ranges from 17.48% in A. bella var. gracilior to 25.20% in A. bipindensis. Porrect and flattened scales distinguish the infra-specific taxa of A. bella while presence of unicellular trichomes separates A. pachyloba from other species. The leaf surface is entirely covered by epicuticular wax deposits and the stomata are either raised or sunken in the genus. Using these foliar epidermal characters, an artificial key has been prepared to facilitate identification of... |
| Tipo: Journal article |
Palavras-chave: Afzelia; Stomata; Epidermal cell; Morphology; Taxonomy. |
| Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432008000100008 |
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| Oliveira,Vanessa M. de; Forni-Martins,Eliana R.; Magalhães,Pedro M.; Alves,Marcos N.. |
| In this study, we examined the chromosome number and some morphological features of strains of Stevia rebaudiana. The chromosomes were analyzed during mitosis and diakinesis, and the tetrad normality and pollen viability were also assessed. In addition, stomata and pollen were measured and some plant features were studied morphometrically. All of the strains had 2n = 22, except for two, which had 2n = 33 and 2n = 44. Pairing at diakinesis was n = 11II for all of the diploid strains, whereas the triploid and tetraploid strains had n = 11III and n = 11IV, respectively. Triploid and tetraploid plants had a lower tetrad normality rate than the diploids. All of the strains had inviable pollen. Thus, the higher the ploidy number, the greater the size of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Asteraceae; Pollen; Polyploidy; Stevia rebaudiana; Stevioside; Stomata. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572004000200015 |
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| Tang, M.-S.; Yang, Y.-P.; Sheue, C.-R.. |
| A comparative anatomical study on the leaves of nine out of 29 species of the genus Daphniphyllum was performed to seek support for the present infrageneric classification. Daphniphyllum is composed of two sections, Lunata (with one subsection Lunata) and Daphniphyllum (with two subsections, Daphniphyllum and Staminodia). The glabrous leaves with brachyparacytic stomata appear in all species in this study; hemiparacytic, laterocytic or anomocytic stomata occur in some taxa. Two (out of three) species of section Lunata show irregular epidermal cells with undulate anticlinal walls on both surfaces and hemiparacytic stomata. Of section Daphniphyllum seven (out of 26) species were sampled; they have curved, straight or undulate anticlinal cell walls and... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Daphniphyllaceae; Daphniphyllum; Epidermis; Leaf anatomy; Lunata; Stomata. |
| Ano: 2009 |
URL: http://www.repository.naturalis.nl/record/524761 |
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| Amaral,Marina Milanello do; Mello-Silva,Renato de. |
| In Velloziaceae, the number of subsidiary cells has been used to characterize species and support groups. Nevertheless, the homology of the stomatal types have not been scrutinized. Stomatal ontogenesis of Vellozia epidendroides and V. plicata, assigned to have tetracytic stomata, and of V. glauca and Barbacenia riparia, assigned to have paracytic stomata, were investigated. In the four species studied, stomata followed perigenic development. Subsidiary cells arise from oblique divisions of neighbouring cells of the guard mother cell (GMC). These cells are elongated and parallel to the longer axis of the stoma. Polar cells show wide variation, following the shape and size of the epidermal cells in the vicinity. Hence, these cells cannot be called... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ontogenesis; Paracytic; Stomata; Tetracytic; Velloziaceae. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042008000300016 |
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| Rosolem,Ciro Antonio; Leite,Vagner Maximino. |
| Boron deficiency in coffee is widely spread in Brazilian plantations, but responses to B fertilizer have been erratic, depending on the year, form and time of application and B source. A better understanding of the effects of B on plant physiology and anatomy is important to establish a rational fertilization program since B translocation within the plant may be affected by plant anatomy. In this experiment, coffee plantlets of two varieties were grown in nutrient solutions with B levels of 0.0 (deficient), 5.0 µM (adequate) and 25.0 µM (high). At the first symptoms of deficiency, leaves were evaluated, the cell walls separated and assessed for B and Ca concentrations. Scanning electron micrographs were taken of cuts of young leaves and branch tips. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Boron deficiency; Ca/B ratio; Coffee nutrition; Stomata. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832007000300007 |
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| Silva,Herman; Sagardia,Susana; Ortiz,Mauricio; Franck,Nicolás; Opazo,Marcela; Quiroz,Madeleine; Baginsky,Cecilia; Tapia,Cristián. |
| The effects of water availability were evaluated on the photosynthetic tissue anatomy in Aloe vera(L) Burm f. and its relationship with morphological, physiological parameters, and water use efficiency as a function of aerial biomass and gel production. Plants were subjected to four levels of water availability equivalent to 20% (T1), 15% (T2), 10% (T3), and 5% (T4) of the atmospheric evaporative demand. The plants exhibited anatomical, morphological, and physiological responses to the different watering treatments. The extreme treatments produced negative responses due to excess water in T1 and water deficit in T4. Treatments T2 and T3 elicited positive responses in cell characteristics and productivity. Anatomical and structural characteristics were... |
| Tipo: Journal article |
Palavras-chave: Anatomical adaptations; Biomass production; Growth; Stomata. |
| Ano: 2014 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2014000100012 |
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| Estelita,Maria Emília Maranhão; Rodrigues,Ana Claudia. |
| The Cyperaceae show the ability to incorporate silicon by depositing colloidal silica, which is recorded by the occurrence of projections in the form of cones, in inner tangential walls of some epidermal cells or "silica cells". Leaves of C. ligularis and R. aberrans were analyzed through the technique of electron backscatter. Cyperus ligularis accumulates silica, in addition to "silica cells", in some stomata, trichomes and the cell walls that surround the cavities of the aerenchyma. The silica in the latter occurs in various forms; however, the cells located near the vascular bundles have conical projections, similar to those of the epidermis. Rhynchospora aberrans presents "silica cells" whose projections have tapered "satellites". In this species,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Stomata; Epidermal cells; Trichomes; Cell walls. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062012000200004 |
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| Rossatto,Davi Rodrigo; Kolb,Rosana Marta. |
| Gochnatia is very common in different phytophysiognomies in the Cerrado of São Paulo State, occupying open and closed areas. In this study, we compared the leaf anatomy and some ecophysiological traits of two species of Gochnatia, one a shrub (Gochnatia barrosii Cabrera) and the other a tree (Gochnatia polymorpha (Less.) Cabrera), which both occur in an area of "cerradão" at the Estação Ecológica de Assis, SP. We found qualitative structural differences between the species, with G. barrosii presenting amphistomatic leaves with a uniseriate epidermis and G. polymorpha showing hypostomatic leaves and a multiple epidermis or hypodermis on the adaxial surface. Moreover, the G. barrosii leaves had lower values in tissue thickness (with the exception of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cerrado; Gas exchange; Leaf anatomy; Stomata. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062012000400014 |
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| Abbade, Leticia Caravita; UFLA; Paiva, Patrícia Duarte de Oliveira; UFLA; Paiva, Renato; UFLA; Castro, Evaristo Mauro de; UFLA; Centofante, Agda Rabelo; UFLA; Oliveira, Cynthia de; UFLA. |
| Este estudo teve como objetivo comparar a estrutura interna de folhas de ipê-branco cultivadas in vitro e ex vitro. Para as avaliações anatômicas foram utilizadas folhas do primeiro nó de ramos, da base para o ápice, com 30 dias de cultivo in vitro e de plantas de campo. O estudo anatômico foi feito por meio das secções transversais e paradérmicas das folhas. As folhas apresentam epiderme uniestratificada e mesofilo dorsiventral. São hipostomáticas e apresentam tricomas em todas as faces. Folhas de plantas cultivadas ex vitro, quando comparadas com in vitro, tiveram espessura do limbo foliar, nervura central da epiderme adaxial e abaxial e os parênquimas paliçádico e esponjoso maiores. Em folhas oriundas do cultivo in vitro, a cutícula e o esclerênquima... |
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Palavras-chave: 2.00.00.00-6 Ciências Biológicas anatomia; Folhas; Estômatos; Nervura central; In vitro; Ex vitro Anatomia vegetal anatomy; Leaves; Stomata; Central nervure; In vitro; Ex vitro. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/1937 |
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| Registros recuperados: 33 | |
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