7 results on '"Vázquez-García L"'
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2. Plantas silvestres ornamentales comercializadas en los mercados de la flor de Tenancingo y Jamaica, México
- Author
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Munguía Lino, Guadalupe, Vázquez García, L. M., López, Jóse A., Munguía Lino, Guadalupe, Vázquez García, L. M., and López, Jóse A.
- Abstract
Our country has adopted all those ornamental species that are famous in the world, including some representing Mexico; nevertheless, there are native species with huge ornamental potential that are not being used. In view of this we developed a list of wild plants that are sold commercially in the flower markets of Tenancingo, State of Mexico, and Jamaica, DF, Mexico. Field work was carried out during the summer-autumn season (June 21-December 21, 2007). Each study site was visited every eight days during this period for the purpose of obtaining and identifying specimens, conducting interviews, and recording common name, if possible the place of collection, time of collection, the seller, location of market and ornamental value. Taxonomic identification was made through the use of keys available in the literature. We report 131 wild species, belonging to 93 genera in 42 families. Orchidaceae was the best-represented family at the species level. In terms of ornamental value it is the whole plant that provides the greatest ornamental value with 41%., En nuestro país se han adoptado todas aquellas especies ornamentales que son famosas en el mundo, incluyendo algunas representantes de México; sin embargo, todavía se tiene material genético ornamental con grandes posibilidades de insertase en el comercio de la horticultura ornamental. Debido a lo anterior, se elaboró un listado de plantas silvestres comercializadas en los mercados de la flor de Tenancingo, Estado de México y Jamaica, Distrito Federal, México. El trabajo se realizó durante la época de verano-otoño (21 de junio-21 de diciembre del 2007), en este periodo se visitó, cada 15 días durante seis meses el área de estudio con la finalidad de obtener ejemplares para su identificación taxonómica, se hicieron entrevistas y se registró: nombre común, lugar y fecha de recolecta, vendedor, lugar de comercialización y valor ornamental. La identificación taxonómica de las especies se realizó mediante el uso de claves disponibles en bibliografía. Como resultados se reportaron 131 especies silvestres, distribuidas en 42 familias y 93 géneros, donde Orchidaceae fue la más representativa a nivel de especies. En cuanto al valor ornamental de las especies se observó que es toda la planta la que proporciona el mayor valor ornamental con 41%. El 53% de las especies proviene del Estado de México. De todas las especies 3% están amenazadas y 2% en protección especial según la NOM-059-ECOL-2001.
- Published
- 2010
3. The identification of outstanding potato cultivars using multivariate methods
- Author
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Pérez López, Delfina de Jesús, González Huerta, Andrés, Sahagún Castellanos, Jaime, Vázquez García, L. M., Rivera Peña, Antonio, Franco Mora, Omar, Domínguez López, Aurelio, Pérez López, Delfina de Jesús, González Huerta, Andrés, Sahagún Castellanos, Jaime, Vázquez García, L. M., Rivera Peña, Antonio, Franco Mora, Omar, and Domínguez López, Aurelio
- Abstract
The evaluation and selection of potato (Solanum tuberosum) cultivars for commercial production in the high valleys of Mexico are important for plant breeding, seed production, and the generation of technology. In this work, ten potato cultivars from five different environments in México were evaluated to determine the proportion of genetic variation contained within each. The potatoes were sown in a completely randomized complete block design. Heritability was determined to be between 53% and 83%, suggesting that there is genetic variability among the potato cultivars that might be agronomically important. According to the additive main effects and multiplicative interaction (AMMI) model, the highest tuber yields were obtained at the locality named "Raíces" in the 2004 and 2005 growing seasons. In those production seasons, the best cultivars that positively correlated with each locality were 779040, 776943, Alpha, and Gigant with yields of 21.18,21.97,23.57, and 25.04 t·ha-1 , respectively. The main components and cluster analyses classified the potato cultivars into three groups. Group 1 included cultivars 777091, Zafiro, Atlantic, and 7718335, each having low yields. Group 2 included cultivars 676002, 779040, 750660, 776943, and Alpha; each had yields that were higher than the general mean, but lower than the Gigant cultivar (Group 3). The Gigant cultivar had the highest tuber yield as well as the highest mean tuber weight per plant, the largest tuber diameter, and tallest tuber lenght., La evaluación y elección de cultivares de papa (Solanum tuberosum L.) recomendados o candidatos a siembra comercial en los valles altos de México es importante para su mejoramiento genético, producción de semilla y generación de tecnología. Por esta razón se evaluaron diez cultivares en cinco ambientes del estado de México, México, para identificar los más sobresalientes usando métodos multivariados, y para determinar la proporción de la variabilidad genética que está presente en esta especie. Se usó un diseño de bloques completos al azar con cuatro repeticiones por ambiente. En este estudio se estimaron heredabilidades entre 53.0 y 83.5 %; estos resultados indican que existe variabilidad genética entre cultivares que es de importancia agronómica. Según el modelo de efectos principales aditivos e interacción multiplicativa (AMMI), la localidad de Raíces en 2004 y 2005 fueron los ambientes con los mayores rendimientos de tubérculo; los cultivares más sobresalientes y con correlación positiva con esta localidad en ambos años fueron 779040, 776943, 'Alpha' y 'Gigant' (21.18; 21.97; 23.57 y 25.04 t·ha-1 ). Los análisis de componentes principales y de conglomerados clasificaron los cultivares en tres grupos: grupo 1, con 777091, Zafiro, 'Atlantic' y 7718335, los cultivares de menor rendimiento; grupo 2, con 676002,779040, 750660, 776943 y 'Alpha', con rendimientos mayores que la media general pero inferiores a 'Gigant' (Grupo 3), el cultivar de mayor producción y medias altas en peso de tubérculo por planta, diámetro y longitud de tubérculo.
- Published
- 2009
4. Cierre percutáneo de una malformación arteriovenosa pulmonar
- Author
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Vázquez-García, L., primary, Marcos-Alonso, S., additional, and Rueda Núñez, F., additional
- Published
- 2013
- Full Text
- View/download PDF
5. Interspecific hybridization between Tigridia pavonia and T. augusta through ovary slice culture
- Author
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Piña-Escutia, J.-L., primary, Vázquez-García, L.-M., additional, and Arzate-Fernández, A.-M., additional
- Published
- 2013
- Full Text
- View/download PDF
6. Genetic diversity of Cosmos species revealed by RAPD and ISSR markers.
- Author
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Rodríguez-Bernal A, Piña-Escutia JL, Vázquez-García LM, and Arzate-Fernández AM
- Subjects
- Cluster Analysis, Genetic Markers, Phylogeny, Random Amplified Polymorphic DNA Technique, Asteraceae genetics, Genes, Plant, Microsatellite Repeats, Polymorphism, Genetic
- Abstract
The genus Cosmos is native of America and is constituted by 34 species; 28 of them are endemic of Mexico. The cosmos are used as a nematicide, antimalarial, and antioxidative agent. The aim of this study was to estimate the genetic diversity among 7 cosmos species based on random amplified polymorphic DNA (RAPD) and inter-simple sequences repeats (ISSR) markers. With RAPD markers, the obtained polymorphism was 91.7 % and the genetic diversity was 0.33, whereas these values were 65.6%, and 0.22 from ISSR markers, respectively, indicating the presence of high genetic diversity among the Cosmos species that were analyzed. The unweighted pair group method with arithmetic mean dendrograms that were obtained with both markers were notably similar, revealing 2 clusters and indicating a clear genetic differentiation among the Cosmos species that were assessed. The first cluster comprised the species Cosmos sulphureus, Cosmos pacificus, and Cosmos diversifolius, while the second cluster included the species Cosmos purpureus, Cosmos crithmifolius, Cosmos bipinnatus, and Cosmos parviflorus. Besides this, the Cosmos species were clustered according to their collection sites. The Mantel test corroborates the correlation between the genetic distance and the geographic altitude of each Cosmos species. The results suggest that it is necessary to preserve the Cosmos species in their natural habitat in addition to the germoplasm collection for ex situ conservation.
- Published
- 2013
- Full Text
- View/download PDF
7. Spatial behavior comparison of Bactericera Cockerelli Sulc. (hemiptera: triozidae) in Mexico.
- Author
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Ramírez-Davila JF, Porcayo-Camargo E, Sánchez-Pale JR, and Vázquez-García LM
- Subjects
- Animals, Hemiptera, Mexico, Solanum tuberosum parasitology, Spatial Behavior
- Abstract
During the last five years, Bactericera cockerelli Sulc. has caused significant economic losses in potato production in Mexico, due to the purple top and zebra chip diseases, since it acts as the vector of Candidatus Liberibacter psyllaurous. Despite its importance as a vector of serious potato diseases, the knowledge of its spatial distribution behavior, which could improve the efficiency of control measures, is entirely lacking. The main objective of this work was to compare the spatial distribution of the immature and adult stages of B. cockerelli obtained in a potato field by means of transect and quadrant sampling techniques and of geostatistics tools that allow the visualization of its spatial distribution in the field. Transect and quadrant samplings showed that the immature stages (eggs and nymphs) of B. cockerelli present a clustered distribution. The validation of the achieved semivariograms in the three dates of sampling corroborated the aggregated distribution of immatures and adults of the insect. The maps obtained in the sampling by using the quadrant or the transect approaches reflect the aggregated structure of the insect populations which did not infest 100% of the plot area. This allowed us to identify infested and free areas, what will aid in decisions for selecting alternatives of control.
- Published
- 2012
- Full Text
- View/download PDF
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