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Search Results: 1 - 10 of 213151 matches for " Gloria Virginia;Colinas-León "
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Red de mercadeo y rentabilidad de flor de corte en el Valle de Mexicali, Baja California, México Marketing network and profitability of cut flower for Mexicali Valley, Baja California, Mexico
Blancka Yesenia Samaniego-Gámez,Gloria Virginia Cano-García,María Teresa Beryl Colinas-León,Carlos Sánchez-Abarca
Revista mexicana de ciencias agrícolas , 2012,
Abstract: La comercialización de flor de corte para Baja California aportó durante 2004 poco más de 122 millones de pesos, considerando semilla para flor y producción de flor de corte. Debido a la exportación de casi la totalidad de la producción estatal de flor cortada, el mercado local representa una oportunidad para la introducción de productos de calidad a precios competitivos de empresas nacionales, siendo Mexicali una ciudad cercana Estados Unidos de América, y aunado al poder adquisitivo de la población es la rentabilidad de las producciones de algodón y hortalizas del Valle de Mexicali, una de las principales zonas productoras del país. Por lo anterior y aunado al importante número de florerías localizadas en la zona se planteó como objetivo describir la red de mercadeo y rentabilidad de la flor de corte en el Valle de Mexicali. Se realizó un estudio de mercado y el diagnóstico para elaborar el análisis FODA, se determinaron las estrategias para el aprovechamiento del potencial económico. El sistema de redes de distribución y mercadeo actual consiste en trasladar las flores de corte desde los centros de producción, Córdoba, Veracruz y distrito de Coatepec Harinas, Estado de México, hasta el Valle de Mexicali, Baja California conservando la calidad y óptima vida de florero hasta su consumo final, asimismo, se requiere de una adecuada planeación de la cadena productiva debido a la presencia de una demanda insatisfecha a lo largo del a o, la población cuenta con el potencial económico y la tradición de obsequiar flores lo cual garantiza una buena rentabilidad. Las especies de mayor interés de los consumidores son rosas (Rosa gigantea y R. chinensis L.), lilis asiáticas (Lilium spp.), polar [Dendranthemaxgrandiflorum (Ramat) Kitamura c. v. Polaris White], clavel (Dianthus caryophyllus), gerbera (Gerbera jamesonii H. Boluxex Hook F.) y lilis orientales (Lilium spp.). Cut flower commercialization for Baja California contributed during 2004 with more than 122 million pesos, considering flower seed and cut flower production. Most of cut flowers produced in state of Baja California Norte is for export market, by this reason local market means an opportunity for introducing quality products at market prices from national companies. Mexicali city, by being near USA and together with its population economic wealth thanks to profitability of cotton and orchards production in Mexicali Valley, is one or the main producer region in the country. By this reason and thanks to great amount of flower shops located in the region the aim of describing marketing network and profi
Red de mercadeo y rentabilidad de flor de corte en el Valle de Mexicali, Baja California, México
Samaniego-Gámez, Blancka Yesenia;Cano-García, Gloria Virginia;Colinas-León, María Teresa Beryl;Sánchez-Abarca, Carlos;Manzo-González, Alejandro;
Revista mexicana de ciencias agrícolas , 2012,
Abstract: cut flower commercialization for baja california contributed during 2004 with more than 122 million pesos, considering flower seed and cut flower production. most of cut flowers produced in state of baja california norte is for export market, by this reason local market means an opportunity for introducing quality products at market prices from national companies. mexicali city, by being near usa and together with its population economic wealth thanks to profitability of cotton and orchards production in mexicali valley, is one or the main producer region in the country. by this reason and thanks to great amount of flower shops located in the region the aim of describing marketing network and profitability for cut flower in mexicali valley is proposed. market study and diagnose to make foda analysis were developed, defining strategies in order to seize economic potential. actual distribution networks and marketing system consist in moving cut flowers from production centers, córdoba, veracruz and coatepec de harinas district, state of mexico, up to mexicali valley, baja california, keeping quality and optimum vase life for final customer, also proper planning for production chain due not covered demand along year it is required, the population has economical potential and tradition to give flowers guaranteeing good profitability. roses (rosa gigantea and r. chinensis l.), asian lilies (lilium spp.), chrysanthemum [dendranthema x grandiflorum (ramat) kitamura c. v. polaris white], carnation (dianthus caryophyllus), gerbera (gerbera jamesonii h. bolux ex hook f.) and oriental lilies (lilium spp.) are species with more consumers' interest.
Propagación in vitro de Oncidium stramineum Lindl., una orquídea amenazada y endémica de México
Flores-Escobar, G.;Legaria-Solano, J. P.;Gil-Vásquez, I.;Colinas-León, M. T.;
Revista Chapingo. Serie horticultura , 2008,
Abstract: the objective of the present study was to determine the most suitable culture medium for in vitro propagation of oncidium stramineum lindl. murashige and skoog (ms) medium was used for germination, and for growth ms (t1) and ms (t2) medium supplemented with organic extracts, coconut milk, peptone and active charcoal, and ms (t3) supplemented with organic extracts, coconut milk, peptone and polyvinyl pyrrolidone were tested. germination was 47.69%. during growth seven phenological stages were observed: imbibition in four days, green seeds in eight days, germination in thirteen days, initial protocorm in sixteen days, late protocorm in nineteen days, leaf development in twenty-eight days, production of true roots in thirty-four days, and seedling development. number of buds, leaf length, leaf width, number of roots, and seedling height were affected by the treatments, but not root length. the tukey analysis showed significant differences among treatments in number of buds, leaf length, number of roots and seedling height. the evaluated variables showed that culture medium (t3) supplemented with organic extracts, coconut water, peptone and polyvinyl pyrrolidone increased leaf width, leaf length and seedling height. with ms (t3) all the variables evaluated correlated significantly. the best growth of oncidium stramineum lindl. seedlings was observed in ms culture medium supplemented with 100 ml·litter-1 coconut milk, 40 g·litter-1 organic extracts from tomato, apple and banana, 2.0 g·litter-1 peptone and 200 mg·litter-1 polyvinyl pyrrolidone.
Producción de plántulas de ciclamen (Cyclamen persicum Mill.) en sustratos basados en polvo de bonote de coco
Flores-Almaráz, R.;Livera-Mu?oz, M.;Colinas-León, M. T.;Gaytán-Acu?a, E. A.;Muratalla-Lúa, A.;
Revista Chapingo. Serie horticultura , 2008,
Abstract: as for many ornamental crops in mexico, forest soil and peat moss are commonly used as substrates for cyclamen production. it is important to find substitutes for both to protect forests and to avoid imports of peat moss. cyclamen seedlings emerge 30 days after sowing (das) and usually the percentage of emergence is low. to improve the percentage and time to emergence, this study was carried out to test coconut coir dust (ccd) as a substrate. cyclamen seedlings were produced and the following factors were evaluated: seed soaking (with and without), substrates (peat moss, washed ccd, unwashed ccd and ccd+ peat moss) and genotype (six series) in a factorial treatment combination in a randomized complete blocks design with three replications. soaking seeds 24 hours before sowing did not affect percentage of emergence but did shorten time to seedling emergence by 1.5 and 2.3 days on average in substrates composed of washed and not washed ccd, respectively, and shortens the time to seedling emergence for giant lugano, pannevis? and halios? by 3.7, 1.0 and 1.1 days, respectively. those seedlings that reached establishment emerged before 37 days. the shortest period of time for seedling emergence and the highest percentage of seedling establishment were obtained with substrates having water retention capacity of 75 and 82%. the physical and chemical characteristics of ccd allows its use in formulating substrates for cyclamen seedlings since it has characteristics similar o superior to peat moss or commercial substrates that contain it. differences were found among the studied genotypes in terms of seedling emergence and establishment, growth rate and biomass production.
Propagación in vitro de la orquídea Brassia verrucosa Bateman ex. Lindl
Flores-Escobar, Georgina;Gil-Vásquez, Isaías;Colinas-León, María Teresa;Mata-Rosas, Martín;
Revista Chapingo. Serie horticultura , 2011,
Abstract: brassia verrucosa bateman ex- lindl was propagated in vitro to determinate the best conditions of culture for seed germination and seedling development, to facilitate the design of an initial strategy for its conservation and rescue. seeds were germinated in murashige and skoog (ms) medium, and seedling were grown in ms (t1), ms supplemented with organic extracts, coconut water, peptone and active charcoal (t2) medium and ms supplemented with organics extracts, coconut water, peptone and gibberellic acid (t3). germination was 56.70 %, initiating six days after sowing. the variables number of buds, leaf width and root length were affected by the treatments, but not leaf length, root number or seedling height. the tukey analysis showed significant differences for all the variables with the exception of leaf width and root length. t2 showed the highest values for the variables number of buds, leaf length, root number and seedling height. germination and development of the plants are the beginning of a strategy for conservation and rescue of the species.
Modelos matemáticos para estimar el crecimiento del fruto de chile manzano (Capsicum pubescens R y P)
Rojas-Lara, P. C.;Pérez-Grajales, M.;Colinas-León, M. T. B.;Sahagún-Castellanos, J.;Avitia-García, E.;
Revista Chapingo. Serie horticultura , 2008,
Abstract: apple pepper inter-varietal hybrid (capsicum pubescens r y p) "puebla x zongolica" is high-yielding due to its volume, pericarp thickness, and fruit weight. fruit yield is explained mainly by its size, and it is of interest to describe fruit growth dynamics. fruit growth analysis generally has been based on destructive sampling since it is impossible to use the same fruit throughout the growing season. competition among the different plant organs decrease fruit size and weight, negatively affecting fruit quality and yield. for these reasons, this study was conducted to assess and identify mathematical models that describe fruit growth without destructive sampling. simple linear regression, multiple linear regression, and four non-linear models were tested. the hypothesis was that one of the six models efficiently explains fruit growth using the independent variable volume of displaced water. chili plants were cultivated under an intensive production system in 2004 and 2005. the dependent variable was fresh fruit weight and the independent variables were fruit growth time, and average fruit length and width at shoulder, volume of displaced water and fruit volume. significant differences were found between the means of the evaluated variables in the two sampling periods (pd"0.0). the models that best explained fruit growth were simple linear regression (only in 2004) in function of volume of displaced water and fruit volume and the multiple linear regression model which adequately describes growth using, besides the above mentioned variables, growth time and average length and width, in both 2004 and 2005. however, the monomolecular method (in both sampling periods) estimates fresh fruit weight simply and precisely using a single non-destructive variable, either the volume of displaced water or volume, making this model the most practical for the description of fruit growth.
Atmósferas modificadas, frigo conservación e inhibidores de oscurecimiento en poscosecha de Pleurotus ostreatus
Ventura-Aguilar, Rosa;Colinas-León, María Teresa;Martínez-Damián, María Teresa;Valle-Guadarrama, Salvador;
Revista mexicana de ciencias agrícolas , 2011,
Abstract: mushrooms present darkening and weight losses during their post-harvest life, which affects sensorial quality for the product; this is the reason why aim of this work was to increase useful life of minimumly processed mushrooms from genus pleurotus ostreatus (jacq.) quélet, by means of plastic film (cp9250 cryovac?) and a control, three different storage temperatures (2 ±1 oc, 5 ±1 oc and 17 ±1 oc) and darkening inhibitors: a) 3% sodium erythorbate + 1% citric acid; b) 1% sodium erythorbate + 1% citric acid; and c) control. the results indicate that by means of plastic film a reduction in breathing took place, compared with control, reduction in weight of 1%, reduction in loss of brightness and smaller activity of enzyme polyphenol oxidase (ec1.10.3.1). the best treatment to extend useful life of pleurotus was plastic flm, with darkening inhibitors (3% sodium erythorbate + 1% citric acid) and storage at 2 or 5 oc.
Flavonoides y actividad antioxidante de Calia secundiflora (Ort.) Yakovlev
Barrón-Yánez, Rosario M.;García-Mateos, M. del Rosario;Soto-Hernández, Marcos R.;Colinas-León, Teresa;Kite, Geoffrey;
Revista fitotecnia mexicana , 2011,
Abstract: the possible extinction of some non-studied species such as calia secundiflora might mean the loss of the knowledge about their metabolites with medicinal properties and agronomic interest. the phytochemical studies on c. secundiflora (ort.) yakovlev (fabaceae) have been focused on its content of alkaloids, but its profile of flavonoids is still unknown. these plant metabolites have been associated to a natural antioxidant capacity which are beneficial for human health according to epidemiological studies. the objective of this research was to quantify the contents of phenolic compounds and flavonoids, as well as to identify the flavonoid structures in leaf and to evaluate their antioxidant potential. the antioxidant activity was evaluated by the dpph (2,2-diphenyl-1-picrylhydrazyl) method in samples taken from hidalgo state, méxico. the analysis by hplc-ms allowed to the identify seven glycosides in the flavonols quercetin, isorhamnetin and kaempferol, which have not described previously for this species. the content of total phenolic compounds (8.31 ± 0.38 mg g-1 of dm) was higher than that of flavonoids (3.08 ± 0.32 mg g-1 of dm). these results explain the antioxidant activity (ic50 = 88.54 ± 0.15; 109.44 ± 0.48 μg ml-1) presented by the leaf extracts. the identification of these flavonoids may contribute to the chemotaxonomy of this genus.
Atmósferas modificadas, frigo conservación e inhibidores de oscurecimiento en poscosecha de Pleurotus ostreatus Modified atmospheres, cold storage and darkening inhibitors in postharvest Pleurotus ostreatus
Rosa Ventura-Aguilar,María Teresa Colinas-León,María Teresa Martínez-Damián,Salvador Valle-Guadarrama
Revista mexicana de ciencias agrícolas , 2011,
Abstract: Las setas presentan oscurecimiento y pérdidas de peso durante su vida poscosecha, afectando la calidad sensorial del producto; por ello el objetivo de este trabajo fue incrementar la vida útil de hongos mínimamente procesados del género Pleurotus ostreatus (Jacq.) Quélet, mediante el uso de una película plástica (CP9250 CRYOVAC ) y un testigo, tres diferentes temperaturas de almacenamiento (2 ±1 oC, 5 ±1 oC y 17 ±1 oC) e inhibidores de oscurecimiento: a) 3% eritorbato de sodio + 1% ácido cítrico; b) 1% eritorbato de sodio + 1% ácido cítrico; y c) un testigo. Los resultados indican que mediante el uso de la película plástica se produjo una reducción en la respiración, comparado con el testigo, mermas en peso de 1%, reducción en la pérdida de luminosidad y menor actividad de la enzima polifenoloxidasa (EC1.10.3.1). El mejor tratamiento para prolongar la vida útil de Pleurotus fue la película plástica, con inhibidores de oscurecimiento (3% eritorbato de sodio + 1% ácido cítrico) y almacenamiento a 2 ó 5 oC. Mushrooms present darkening and weight losses during their post-harvest life, which affects sensorial quality for the product; this is the reason why aim of this work was to increase useful life of minimumly processed mushrooms from genus Pleurotus ostreatus (Jacq.) Quélet, by means of plastic film (CP9250 CRYOVAC ) and a control, three different storage temperatures (2 ±1 oC, 5 ±1 oC and 17 ±1 oC) and darkening inhibitors: a) 3% sodium erythorbate + 1% citric acid; b) 1% sodium erythorbate + 1% citric acid; and c) control. The results indicate that by means of plastic film a reduction in breathing took place, compared with control, reduction in weight of 1%, reduction in loss of brightness and smaller activity of enzyme polyphenol oxidase (EC1.10.3.1). The best treatment to extend useful life of Pleurotus was plastic flm, with darkening inhibitors (3% sodium erythorbate + 1% citric acid) and storage at 2 or 5 oC.
Sistema enzimático antisenescencia, catalasa-superóxido dismutasa, de frutos de pitahaya (Hylocereus undatus) almacenados con frío
Balois-Morales, R.;Colinas-León, M. T.;Pe?a-Valdivia, C. B.;Chávez-Franco, S. H.;Alia-Tejacal, I.;
Revista Chapingo. Serie horticultura , 2008,
Abstract: the objective of this investigation was to evaluate the effect of low temperatures on the anti-senescence catalase (ec. 1.11.1.6; cat)-superoxide dismutase (ec. 1.15.1.1; sod) enzymatic system of pitahaya (hylocereus undatus) fruit during storage. groups of fruits from tehuacan, puebla, were stored four days at room temperature (22±1 °c), and at 3, 7 and 11±1 °c for 7, 14 and 21 days, and after each cold-storage period they were kept for four days at 22±1 °c. catalase and sod activity was evaluated in fruit pulp from 20 treatments, including a control without storage. four days at 22±1 °c did not modify cat nor sod activity (18.75 y 3.25 u·g-1, respectively) compared with the control. cold storage significantly diminished cat activity, relative to the control. inhibition of cat activity was not dependent on cold storage temperature or time, but mean inhibition in fruits stored at 11±1 °c (13.07 u·g-1) was slightly lower than at 3 and 7±1 °c (12.39 u·g-1). after cold storage, cat inhibition was partially or totally reverted after four days of storage at 22±1 °c. sod activity was not significantly affected by low temperatures, and in general, after cold storage, it was activated with complementary storage at 22±1 °c. cat activity is inhibited by cold storage, but sod activity, which diminishes the process of senescence generated by oxidative stress, is activated in the pitahaya fruits.
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