Ma del Carmen Ojeda-Zacarías

Autonomous University of Nuevo León | UANL · Posgrado e Investigación

Exploring alternative avenues, in vitro culture emerges as a promising option for potential bioactive compound sources. However, compared to intact plants, only a few cultures demonstrate efficient synthesis of secondary metabolites. Elicitors have gained prominence as stress agents for enhancing in vitro micropropagation in specific tissues, organ...

Consolidar los cultivares de uva para producción de vino en regiones cálidas debido a las fluctuantes temperaturas que les caracteriza en invierno, no es una tarea fácil, ya que no tienen las condiciones adecuadas para estos cultivos. Debido a tal circunstancia, se propuso el área del viñedo experimental del cipa-uanl, que tiene un clima semicálido...

Plants protect themselves, after pathogen attack, through the passive and active defense mechanisms. The treatment of plants with various agents, including cell wall fragments, plant extracts, and synthetic chemicals, can induce resistance to subsequent pathogen attack both locally and systemically. In view of the capability of phytochemicals compo...

Genetic improvement of cocoa (Theobroma cacao L.) could be assisted by low-cost and highly informative molecular techniques. In this study, primers for the detection of sequence-related amplified polymorphism (SRAP) and intron targeted amplified polymorphism (ITAP) were used for the molecular characterization of the genus Theobroma. Genotypes Carme...

Texas ebony (Ebenopsis ebano [Berland.] Barneby & J.W. Grimes) is a member of the Fabaceae that is native to Mexico. Its wood has multiple uses, and its natural propagation is limited and only by seed. The present investigation describes the first report of Texas ebony somatic embryogenesis with the objective of identifying medium, growth regulator...

La aptitud combinatoria general (ACG) y la específica (ACE) se usan para identificar combinaciones híbridas entre progenitores con rendimiento mayor o menor que el comportamiento promedio esperado de las líneas progenitoras. El objetivo de este estudio fue evaluar la ACG de 7 líneas como hembras (H) y 4 líneas macho (M); así como la ACE de las 28 c...

La inducción de brotes in vitro es una estrategia de la micropropagación vegetal utilizada para incrementar la producción de orquídeas, en comparación con el cultivo tradicional que requiere un amplio periodo de tiempo para obtener una población sustancial para comercialización. El objetivo de este estudio fue inducir la formación de brotes in vitr...

The in vitro propagation of two cultivars of grapevine (Vitis vinifera L.) Cabernet Sauvignon and Merlot, began using axillary buds and meristems as explants source, these were established in Murashige and Soog (MS) medium plus 6-benzylamino purine (BAP) at 0.5, 1.0 and 1.5 mg L-1. The variables evaluated were number and length of buds. The greates...

Uno de los enfoques de la micropropagación en aguacate es la multiplicación de portainjertos de interés comercial. En el presente trabajo se tuvo como objetivo la identificación del medio de cultivo adecuado para las etapas de establecimiento e inducción de brotes, de los cultivares Huevo de Toro y Mantequilla, para lo cual se establecieron segment...

The combination of salts, hormones and the gaseous environment in vitro could affect the expression of somatic embryogenesis. The effect of the combination of two culture media and inhibitors of ethylene induction of embryogenic callus of Coffea canephora P., and their ability to proliferate and form embryos was studied. five leaf explants of C. ca...

The combination of salts, hormones and the gaseous environment in vitro could affect the expression of somatic embryogenesis. The effect of the combination of two culture media and inhibitors of ethylene induction of embryogenic callus of Coffea canephora P., and their ability to proliferate and form embryos was studied. five leaf explants of C. ca...

One approach micropropagation avocado rootstock is the multiplication of commercial interest. In the present study aimed to identify the suitable culture medium for the stages of establishment and induction of buds of cultivars Huevo de Toro and butter, for which settled internodal segments with axillary buds (micropiles) in the media MS, DCR and Y...

The objective of this study was to assess the chlorophyll content of corn lines at different vegetative stages and the diversity between them. The study was conducted in the experimental field of the Roque Institute of Technology (ITR) located in Roque, Celaya, Guanajuato, Mexico. We used 32 corn lines from CIMMYT and four lines from the breeding p...

The objective of this study were to estimate selection, simultaneous selection of independent characters, and genetics gain, in a recurrent selection program of full-sib families in two corn populations. We evaluated 81 families under irrigation of two native populations of Pinto Amarillo of maize numbers “15” and “45” at the experimental field of...

Jatropha curcas is a species with a biodiesel production potential. The supply of elite planting material is critical due to traditional spread disadvantages. Plant tissue culture is an alternative to obtain quality plant material for planting. For these reasons, the objective of this study was to evaluate the feasibility of three phenological ages...

Jatropha curcas is a species with a biodiesel production potential. The supply of elite planting material is critical due to traditional spread disadvantages. Plant tissue culture is an alternative to obtain quality plant material for planting. For these reasons, the objective of this study was to evaluate the feasibility of three phenological ages...

The implementation of plant tissue culture of Jatropha curcas encounters many problems such as the browning caused by phenolic oxidation. Therefore, a rapid methodology for comparison of treatments that can prevent this oxidation of the plant tissue is required. The determination of the enzyme polyphenol oxidase (PPO) activity could be used for thi...

RESUMEN El piñón azul o maxi piñón Pinus maximar-tinezii Rzedowski es una especie endémica en peligro de extinción debido a la alteración de sus poblaciones en su hábitat natural y que ha sobrevivido a una restricción ge-nética extrema, además es considerado el más raro de los pinos piñoneros. En este trabajo se evaluó la respuesta rizogénica de br...

Mexico is considered the center of origin of avocado, and in the mountains of Sierra Madre Oriental in Nuevo Leon the remains of an avocado have been found, which are evidence of the place or origin of Persea americana var. drymifolia, or the Mexican avocado. Wild creoles have been found growing with native vegetation and have contrasting character...

Jatropha curcas L., conocida en México como piñoncillo, es una especie productora de aceite, la cual ha recibido gran atención en recientes años al ser utilizada como fuente para la elaboración de biodiesel debido que sus semillas llegan a producir de 46 a 64% de aceite. Sin embargo, la producción de Jatropha ha demostrado limitado éxito debido al...

Leaf explants of Persea americana Mill. var. drymifolia were established on DCR medium (Gupta and Durzan, 1985) supplemented with vitamins and growth regulators to produce callus, two sub cultures were made in intervals of 30 to 45 days between them. In order to determine the genetic variability 341 AFLP (amplified fragment lenght polymorphism) pol...

Leaf explants of Persea americana Mill. var. drymifolia were established on DCR medium (Gupta and Durzan, 1985) supplemented with vitamins and growth regulators to produce callus, two sub cultures were made in intervals of 30 to 45 days between them. In order to determine the genetic variability 341 AFLP (amplified fragment lenght polymorphism) pol...

The implementation of plant tissue culture of Jatropha curcas encounters many problems such as the browning caused by phenolic oxidation. Therefore, a rapid methodology for comparison of treatments that can prevent this oxidation of the plant tissue is required. The determination of the enzyme polyphenol oxidase (PPO) activity could be used for thi...

Pinus maximartinezii Rzedowski is an endemic specie in danger of extinction due to population alteration in the wild and has survived extreme genetic restriction, it is also considered the rarest of pines. In this study rhizogenic response of Pinus maximartinezii sprouts, obtained from zygotic embryos regenerated via organogenesis subjected to in v...

The aims of this study were to estimate, in two native corn populations, selection indexes of agronomic characters that allow to identify corn families superior in yield and to compare two relative efficiencies of the predicted response expected. We evaluated 169 full-sib corn families under irrigation of the "Liebre" subpopulations number "10" and...

Mediante análisis químicos se determinaron las curvas de crecimiento y de absorción de algunos nutrimentos esenciales durante el ciclo de producción de la calabacita italiana (Cucurbita pepo L.), en un lote de producción comercial. La producción de biomasa seca total fue de 243 g/planta. Los datos de absorción de nitrógeno (N), fósforo (P), potasio...

Chemical analyzes were conducted to determine plant growth and absorption curves for some essential nutrients during the Italian squash (Cucurbita pepo L.) growing season in a commercial production plot. The total dry biomass production was 243 g/plant; time series absorption data for nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), and m...

Hylocereus undatus (Haw.), también conocida como el cactus que florece de noche, es una planta trepadora que con frecuencia se encuentra sobre rocas o como epífita; es nativa de los bosques tropicales de México y Centro América, y se encuentra ampliamente distribuida como cultivo en el mundo. El fruto de H. undatus es comestible y es conocido p...

The somatic embryogenesis can be affected by explants' oxidation when a common method of disinfection is. In the Experimental Field Rosario Izapa in 2006, the tolerance to disinfectants of leaf explants of coffee genotypes was determined by the median lethal dose (LD50) and based on its tolerance the optimal disinfectant for aseptic establishment w...

La inducción de la embriogénesis somática en café (Coffea spp.) es afectada por el tipo de explante y el medio de cultivo. Este trabajo se efectuó para obtener el tipo de explante foliar y el medio de cultivo óptimos para la inducción de la embriogénesis somática en 13 genotipos mejorados de Coffea spp. Se establecieron explantes de hojas inmaduras...

Somatic embryogenesis induction in coffee (Coffea spp.) is affected by explant type and culture medium. This work was done in order to obtain the optimal type of foliar explant and culture medium for somatic embryogenesis induction in 13 selected genotypes of Coffea spp. Explants of immature (Hi), young (Hy) and mature leaves (Hut) were compared in...

Resumen. El presente estudio tiene por objetivo aplicar la técni-ca de los marcadores moleculares tipo AFLP para la estimación de la diversidad genética en nopal dentro del Banco de Germoplasma de la FAUANL, donde se han reportado 12 accesiones como posibles du-plicados por medio de marcadores moleculares tipo RAPD. El método utilizado para la extr...

The knowledge of the crop development and nutrient extraction curves, allows developing suitable nutrition programs for each crop, with the consequent reduction of costs and pollution that are caused by the excessive application of fertilizers. Some nutrients, like the nitrogen (N), besides being very important in plant metabolism, are very dynamic...

The objective of this study was to apply the AFLP-type molecular marker technique to estimate genetic diversity in cactus pear within the Germplasm Bank of FAUANL. Twelve accessions have been reported as possible duplicates through type RAPD- molecular markers in such Bank. DNA was extracted using the cellular ruptor technique, and then digested an...

Pinus maximartinezii (Rzedowski) is an endemic endangered species, confined to a single population of approximately 2000 to 2500 mature trees. It covers about 400 ha in southern Zacatecas, Mexico. The success of tissue culture techniques for germplasm preservation depends on regeneration of cultures. The objective of this study was to achieve an in...