Yolanda Donají Ortiz-Hernández

National Polytechnic Institute | IPN · Investigación

Rural communities in Oaxaca face challenges such as food insecurity, economic instability, and the loss of traditional agricultural knowledge. Home gardens, once essential for food production and income generation, have declined due to migration, environmental degradation, and modern agricultural pressures. This study evaluated how community-driven...

Indigenous communities worldwide face increasing challenges from modernization, migration, and economic pressures, which threaten their traditional agricultural systems and cultural heritage. These dynamics often lead to shifts in land use, the erosion of ancestral knowledge, and the weakening of cultural identity. Understanding how these communiti...

The increasing demand for food and the overexploitation of natural resources rapidly deplete the planet’s ecosystems, highlighting the urgent need for sustainable alternatives. Nature-based solutions effectively promote agricultural sustainability and environmental conservation but require continuous financial and political support to overcome exis...

De la naturaleza el humano ha ido seleccionando y selecciona de acuerdo al lugar y momento en que se encuentren productos para su alimentación, que al darlos a conocer se convierten en productos demandados por su exquisitez y alto valor nutricional, hasta traducirse esos recursos en productos exóticos de alto valor económico ; tal es el caso de las...

La pitajaya (Hylocereus undatus Haw.) es una cactácea trepadora epífita, con gran potencial frutícola, que se puede encontrar en la selva baja caducifolia; sin embargo, se carece prácticamente de conocimientos básicos sobre esta especie que provean información para el aprovechamiento de este recurso. Debido a ello, se realizó un estudio para conoce...

Trichoderma is a genus of cosmopolitan fungi with more than 375 species described today. Despite its global significance in agriculture, ecosystems, and industry, few studies have focused on studying the diversity and distribution of this genus in Mexico. In this systematic review and meta-analysis, we aimed to understand the diversity and distribu...

The fruits of the nopal (Opuntia spp.), cactus pears, are considered functional foods due to their content of nutritive and bioactive substances. Its pulp is generated by numerous seeds that limit their consumption due to their size and hardness and detract from their quality. Other undesirable fruit characteristics are its inedible peel and its sh...

El patrimonio biocultural constituido por elementos naturales y culturales de la región han sufrido cambios que ponen en riesgo su continuidad; debido a las practicas actuales de la agricultura en la zona. Asimismo, el trabajo comunitario enfrenta las condiciones climáticas complicadas (sequías, lluvias intensas descontroladas, incendios, plagas, e...

The weevil Scyphophorus acupunctatus Gyllenhal causes damage and losses in agave crops and has traditionally been controlled using contact and systemic agrochemicals. Implementing microbial control strategies is proposed as an alternative to mitigate the environmental impact associated with agrochemicals. The objective of this study was to determin...

El presente libro aporta 18 estudios sobre los objetivos del desarrollo sostenible (ODS) los cuales presentan diversas estrategias orientadas al cumplimiento de la agenda 2030 que delinea la estrategia del desarrollo sostenible. El cumplimiento de los ODS se ha visto trastocado por la pandemia de la covid-19, por lo que este libro aporta replanteam...

El presente libro aporta 18 estudios sobre los objetivos del desarrollo sostenible (ODS) los cuales presentan diversas estrategias orientadas al cumplimiento de la agenda 2030 que delinea la estrategia del desarrollo sostenible. El cumplimiento de los ODS se ha visto trastocado por la pandemia de la covid-19, por lo que este libro aporta replanteam...

Ante el término de la emergencia sanitaria por COVID-19, afrontar desde las ciencias sociales las consecuencias y desafíos surgidos en el país en torno a problemáticas de salud, economía, género, movilidad, habitabilidad y demás, es imprescindible para comprender de qué manera ha cambiado el orden social, cómo se han replanteado prioridades colecti...

La migración en las comunidades de Oaxaca es un fenómeno común, pero cuando los migrantes deciden regresar a su lugar de origen encuentran dificultades para adaptarse a la vida cotidiana y laboral. optan por ofertar su mano de obra y dominio del idioma inglés en empresas mezcaleras, donde la comunicación de los productores con turistas extranjeros...

Oaxaca, Mexico, is home to over 30 species of the genus Agave, and its cultivation is of great economic and social importance for the mezcal industry, which depends on its production. The incidence of the pest Scyphophorus acupunctatus causes severe losses and damage. Agrochemicals are used for its control, but a viable alternative is microbial con...

La restricción del agua y altas temperaturas son factores limitantes que afectan el desarrollo de las plantas. En este estudio se evaluó el efecto del estrés hídrico en chile Huacle negro con tres intervalos de tensión de humedad en el suelo (10 a 20, 21 a 30 y 31 a 40 kPa) en camas de siembra con y sin acolchado de 0.9 m de ancho y 6.0 m de largo....

En la comunidad de Zaachila, Oaxaca, existen múltiples elementos culturales que motivan a los turistas y visitantes a realizar recorridos turísticos y disfrutar una estancia recreativa. La comunidad como grupo social reproduce valores, costumbres y tradiciones que conforman la identidad colectiva, la cual otorga sentido de pertenencia y cohesión so...

En esta investigación se discute la importancia de la producción de mezcal artesanal en comunidades indígenas de la región Mixteca en Oaxaca como fomento a la economía campesina, en el contexto de la nueva ruralidad considerando los aspectos: pobreza, migración y envejecimiento de la población. En la población rural recae la búsqueda de alternativa...

Calcium oxalate crystals were observed on the leaf epidermis of Agave potatorum surrounding the stomatal complex. Their morphology corresponded to the styloid type, and the chemical composition using EDS spectrum confirms calcium oxalate. A significantly higher abundance of crystals was observed on the adaxial leaf side in comparison with the abaxi...

Indiscriminate use of insecticides to control vectors of malaria, dengue, and yellow fever contaminates the environment and with time, gradually increases insecticide-resistant mosquitoes, making their control increasingly difficult. Use of the parasitic nematode Romanomermis iyengari (Mermithidae) is efficient biological control against mosquitoes...

Physalis ixocarpa Brot. (tomatillo or Husk tomato) is one of the five major vegetables cultivated in Mexico, but its yield in the field is low. However, greenhouse crops and the enhancement in plant density can promote an increase in yield per area. The aim of this research was to evaluate: yield, water consumption and water use efficiency of varie...

Physalis ixocarpa Brot. (tomatillo or Husk tomato) is one of the five major vegetables cultivated in Mexico, but its yield in the field is low. However, greenhouse crops and the enhancement in plant density can promote an increase in yield per area. The aim of this research was to evaluate: yield, water consumption and water use efficiency of varie...

The diversity of chilis in Oaxaca is one of the most extensive in Mexico. Growers select seeds in the traditional manner; information on its quality is unknown. The aim of this research was to compare the physical and physiological quality of seeds and seedlings of three native types to chili (Huacle, De agua and Pasilla) and of the commercial Gree...

The presence of the carrier and vector of Pectobacterium carotovorum (Jones) (Enterobacteriaceae) was found in Agave potatorum Zucc. (Asparagaceae) (larvae and adults of Scyphopphorus acupunctatus Gyllenhaal [Coleoptera: Curculionidae], larvae of Drosophila melanogaster Macquart [Diptera: Drosophilidae] and Hermetia illucens [L.] [Diptera: Stratiom...

Agave potatorum (tobalá) es una especie silvestre que se reproduce solo por semilla. La planta se recolecta antes de florecer para producir mezcal, lo que impide la formación de semillas y reduce la diversidad de la especie. El objetivo del estudio fue conocer la composición química parcial y la germinación de semillas de agave tobalá colectadas en...

The Huacle chili (Capsicum annuum L.) is an endemic vegetable from Oaxaca, Mexico with low yield. The objective of this study was to evaluate three concentrations of Steiner solution: 10, 15 and 20 meq L-1 in the morphometric characteristics of fruits and in the quality of Huacle chili seeds, important parameters for the production and conservation...

Although their control is based on chemical products, the infestations by ticks (Ixodes scapularis Say) are causing great losses and damages in the livestock production worldwide. In this study, the survival of the entomopathogenic nematodes Heterorhabditis bacteriophora, Steinernema carpocapsae , and Steinernema websteri in vegetal oil suspension...

Agave potatorum reproduces mainly through seeds is widely collected for the mezcal production, and there is currently a marked decrease in their wild populations. Therefore, to contribute to its sustainable use, it is important to characterize the morphology of its seeds and to know their germinative characteristics. Research question: Do the year...

Physalis ixocarpa (husk tomato) is traditionally cultivated in Mexico, and nowadays the yield is low. In this study, four cultivars of husk tomato were evaluated, under greenhouse and field conditions. It was carried out a split-plot experimental design in a 4x2 factorial arrangement. The large plot was the growth conditions and the small plot was...

Conservation areas are often established by decree and labeled as Nature Reserves. National agencies dependent on governments are involved for protection, management and promotion. However, there are problems with community participation in areas near or within the buffer zones to implement development initiatives, largely due to anthropocentric an...

El objetivo de este trabajo es analizar el proceso del establecimiento de un comité comunitario y su involucramiento para mejorar las condiciones ambientales bajo una lógica de acción colectiva en San José Chiltepec, Oaxaca, México; donde existe un problema de abastecimiento de agua potable y contaminación en aguas superficiales. Para este fin, se...

In agrotechnology, colored shade nets are proposed as a strategy to improve the effect of solar radiation on plants. This study evaluated the growth, physiology and oil content of basil plants (Ocimum basilicum L.; 'Nufar F1' Sweet Genovese) grown under colored shade nets. The plants were grown under polyethylene nets with a shade coefficient of 50...

The industry of mezcal (Agave spp.) in Oaxaca, Mexico annually generates more than one hundred thousand tons of bagasse. With the aim of using this by-product as an alternative organic substratum, there were analyzed the physical, physicochemical and chemical properties before and after the composting of the bagasse of the A. angustifolia Haw with...

Enzymes are proteins that catalyze chemical reactions in living systems, transforming specific substrates into the products needed in biological cycles and for many edaphic processes. Soil enzymatic activities have been proposed as soil quality indicators, due to their relation with soil biology. Although the long-term effects of organic and minera...

Commercialization of watercress in the Sierra Norte mountain range in Oaxaca, Mexico principally relies on harvesting plants growing on riverbanks; however, semi-intensive cultivation throughout the year could be established as an alternative for the region. With this as an objective, the present study was carried out using the laminar flow of nutr...

Numbers of Phyllophaga vetula (Horn) (Coleoptera: Melolonthidae) larvae killed after application of nematodes Steinernema glaseri Steiner, Heterorhabditis bacteriophora Poinar, and Steinernema feltiae Filipjev at five concentrations (50, 100, 200, 500, and 1,000 nematodes per larva) in aqueous suspension were compared. Lethal concentrations and tim...

Phosphate-solubilizing bacteria (PSB) are a group of organisms that solubilize fixed forms of phosphorus, making it available for the plant growth. The effect of three PSB strains, called PSBMi, PSBHc and PSBVa, on growth of pitahaya seedlings (Hylocereus undatus) was studied in a growth chamber. The results indicated that plant stem diameter, plan...

RESUMEN. Esta investigación se realizó de agosto de 2012 a enero de 2013, en un invernadero del CIIDIR Unidad Oaxaca, del IPN. Se colectó adultos de mosca blanca en plantas de frijol ejotero en invernadero y ellos se colocaron en trampas de tela tergalina verde de 40x40 cm, en las cuales se introdujeron de dos a tres foliolos de frijol conteniendo...

RESUMEN. Esta investigación se realizó de agosto de 2012 a enero de 2013, en un invernadero del CIIDIR Unidad Oaxaca, del IPN. Se colectó adultos de mosca blanca en plantas de frijol ejotero en invernadero y ellos se colocaron en trampas de tela tergalina verde de 40x40 cm, en las cuales se introdujeron de dos a tres foliolos de frijol conteniendo...

In Oaxaca's Central Valleys, there are 118 production units, 30 %> of the greenhouse surface for tomatoes in the state. These production units are varied in their levels of performance, profitability and productivity. The theory of enterprise based on resources and on the comparative advantage suggests that some resources are strategic in the produ...

In Oaxaca, Mexico, Agave spp. is produced as the main raw matter of the mezcal (distilled alcoholic beverage) industry. Agave weevil, Scyphophorus acupunctatus Gyllenhal, in adult agave plants causes rot and death, which in turn affects production and quality of mezcal. Five amounts of damage by the agave weevil were analyzed in relationship to tot...

The mezcal industry in Oaxaca, Mexico produces annually 122 696 tons of mezcal bagasse waste (Agave spp.), underutilized waste product that is incinerated or dumped into rivers and streams, causing serious environmental problems. In order to use, the organic bagasse waste as alternative for soilless culture of tomato (Solanum lycop-ersicum L.), the...

The mezcal industry in Oaxaca, Mexico produces annually 122 696 tons of mezcal bagasse waste (Agave spp.), underutilized waste product that is incinerated or dumped into rivers and streams, causing serious environmental problems. In order to use, the organic bagasse waste as alternative for soilless culture of tomato (Solanum lycopersicum L.), ther...

The objective of this contribution is to present some recent advances in research on the diseases affecting pitahaya (Hylocereus spp.) conducted in various parts of the world, thereby providing some information for promoting further studies on plant protection of the pitahaya species. Pitahaya is a cactus fruit crop of high demand at national and i...

The mezcal industry in Oaxaca, Mexico produces annually 122 696 tons of mezcal bagasse waste (Agave spp.), underutilized waste product that is incinerated or dumped into rivers and streams, causing serious environmental problems. In order to use, the organic bagasse waste as alternative for soilless culture of tomato (Solanum lycopersicum L.), ther...

Hylocereus is a native American cactus of varied habits and widely distributed from the Florida coast to Brazil. The fruit is known under several commercial and native names, but "pitahaya" or "pitaya" prevails all around. The genus contains 14 species and it is part of the subtropical and tropical American rainforests. It is common to find Hylocer...

The inadequate oxygenation of the nutrient solution affects the absorption of nutrients and water, and consequently affects plant growth and development. In this study, the incorporation of oxygen in a recirculating hydroponic system by two passive methods, container inclination and hydraulic jumps, was evaluated in the tomato (Lycopersicon esculen...

The inadequate oxygenation of the nutrient solution affects the absorption of nutrients and water, and consequently affects plant growth and development. In this study, the incorporation of oxygen in a recirculating hydroponic system by two passive methods, container inclination and hydraulic jumps, was evaluated in the tomato (Lycopersicon esculen...

The aim of this investigation was to evaluate the effect of two contrasting seasons (fall and spring) and irrigation regimes (well-watered and drought-stressed plants) on the carbon exchange rate (CER) of pitahaya grown in a cold greenhouse in the Valley of México. Carbon exchange rate (CER) of one-year-old stems of pitahaya was studied over two pe...

In the last two decades, the cultivation area of pitahaya from the Hylocereus genus has increased around the world due to its fruit attributes, production level, and economic returns. The plant's stems, fruits, and flowers are used in food, and in medicine. Here we present the contribution of Mexico to the agronomical, physiological, and cultural k...

La cáscara del fruto del almendro (Prunus dulcis L.) es un residuo orgánico de la industria de los frutos secos, con mínima utilización en los países mediterráneos. Con el propósito de utilizar este material como medio de cultivo para hortalizas, se estudió el efecto del tiempo de uso como sustrato en función de sus propiedades físicas y químicas....

The almond (Prunus dulcis L.) shell is an organic residue of the dry fruit industry, which is underutilized in Mediterranean countries. With the purpose of utilizing this material as a substrate for cultivation, a study of its changes over time, regarding its physical and physical-chemical properties, as well as its granulometric distribution, was...

Debido al creciente interés comercial por el fruto de la pitahaya, es necesario estudiar el comportamiento poscosecha de éste para su manejo durante el transporte y almacenamiento. En éste trabajo se evaluó la velocidad de respiración, los sólidos solubles totales (ºBx), la acidez titulable, los cambios de color, la pérdida de peso y el contenido d...

Esta contribución está enfocada hacia el análisis de los retos y las perspectivas en la conservación y uso de los recursos genéticos vegetales en la agricultura de México. This contribution is focused on the analysis of the challenges and perspectives in the conservation and use of plant genetic resources for the agriculture in Mexico.