Eduardo Fidel Héctor Ardisana

Universidad Técnica de Manabí (UTM) · Instituto de Posgrado

Huizache is one of the most important shrubs or small trees in disturbed areas of the dry regions of Mexico. The genus Vachellia includes approximately 1,300 species that are widely distributed across tropical regions worldwide. In Mexico, around 84 species are recognized as native, with 30 of them being endemic. The aim of this book is to describe...

Handroanthus chrysanthus Jacq. S. O. Grose and Tabebuia rosea (Bertol.) Bertero ex A.DC are two forest species that grow in the coastal region of Ecuador and are threatened with extinction. A protocol for the mass multiplication of these species was developed using in vitro culture techniques. The cultures were initiated from seeds, and the effect...

La reciente introducción en la educación universitaria de herramientas de Inteligencia Artificial (IA), en especial el ChatGPT, motiva preocupaciones de docentes y gestores educativos en dos grandes campos: uno de ellos es el mal manejo de estas tecnologías por los estudiantes, conducente al plagio y la deshonestidad académica; el otro es la profun...

In recent years, the use of electromagnetic fields as an enhancer of biological processes in agriculture has emerged as an emerging technology. This is closely related to the carbon footprint, since plants in general and higher plants in particular, through the photosynthesis process, reduce the atmospheric carbon load, converting it into structura...

Handroanthus chrysanthus Jacq. S. O. Grose and Tabebuia rosea (Bertol.) Bertero ex A.DC are two forest species that grow in the coastal region of Ecuador and are threatened with extinction. A protocol for the mass multiplication of these species was developed using in vitro culture techniques. The cultures were initiated from seeds, and the effect...

Using large volumes of synthetic chemical fertilizers is a general practice in modern agriculture at a high economic and environmental cost. Biostimulants have become an alternative to this routine due to their ability to stimulate plant physiological processes without polluting soil and water. In Ecuador, however, little research has been carried...

Postgraduate quality management can be carried out from two approaches: the first, (competitive) is based on compliance with academic, scientific and administrative standards, and the positioning of universities in world lists of best institutions; the second (humanist-social) in the commitment of the universities with the solution of the problems...

The cultivation of edible mushrooms has been an activity of great ecological, social and economic importance for many years. There is a great diversity of different species of these mushrooms, truffles, chanterelles, pine mushrooms, Termitomyces, with more than 1100 registered species, many of which are of great economic importance not only for exp...

Corn (Zea mays L.) is one of the most important food crops, both for human and animal consumption. The objective of this research was to evaluate the effect of planting density on the morpho-physiological and productive behavior of INIAP H-603 hybrid maize, in summer with localized irrigation. A bifactorial design (distances between rows and plants...

Goji berries, also known as wolfberries, are the fruit of two closely related species: Lycium chinense Mill and Lycium barbarum L. both species are native to China and have been cultivated for centuries for their medicinal and nutritional properties. Goji plants have great importance and application in medicine, cooking, and their fruit can be eate...

Agricultural activities are one of the important sources of heavy metals around the world. Heavy metals are contaminants that can accumulate in soils, animals, water, plants and humans; they are not biodegradable causing several damages on living organisms. The remediation of places polluted with heavy metals is necessary, and several techniques ar...

Postgraduate quality management can be carried out from two approaches: the first, (competitive) is based on compliance with academic, scientific and administrative standards, and the positioning of universities in world lists of best institutions; the second (humanist-social) in the commitment of the universities with the solution of the problems...

The accelerated development of modern agriculture in order to feed a growing world population is one of the main causes of contamination in soil, water, and air, causing diseases in animals and humans. Among the most common pollutants are nitrogenous fertilizers, pesticides, hydrocarbons, and nanomaterials. As more food is produced, pollution incre...

Cowpea bean (Vigna unguiculata L. Walp) is a nutrient-rich crop that can be produced in dry periods. As an alternative to synthetic chemical fertilization (SCF) in this species, the effects of a biostimulant (bovine manure vermicompost leachate, BMVL) on growth and yield variables were studied. The research was carried out at the Las Maravillas sit...

Chemical fertilizers are frequently used in agriculture with harmful effects on ecological components, so the use of microorganisms as growth regulators is an agricultural practice increasingly used today. The aim of this research was to evaluate Trichoderma sp. as growth regulator in tomato plants. Trichoderma sp. isolated from soils was grown...

In Mexico, phymatotrichopsis root rot is regarded as the most important disease in the pecan tree. Its causative agent is the fungus Phymatotrichopsis omnivora (Duggar) Hennebert, and the percentage of diseased trees ranges between 3 to more than 25% in a plantation. Symptoms vary from mild damages to the death of the infected tree. The roots inva...

In Mexico, phymatotrichopsis root rot is regarded as the most important disease in the pecan tree. Its causative agent is the fungus Phymatotrichopsis omnivora (Duggar) Hennebert, and the percentage of diseased trees ranges between 3 to more than 25% in a plantation. Symptoms vary from mild damages to the death of the infected tree. The roots invad...

In Latin America, the immense existing biodiversity is associated with the abundance of enormous practically unknown regions and the presence of indigenous peoples, in some cases uncontacted. Along with the profusion of life forms that have been preserved over the years, the danger of genetic erosion caused by indiscriminate exploitation stands out...

Chemical fertilizers are frequently used in agriculture with harmful effects on ecological components, so the use of microorganisms as growth regulators is an agricultural practice increasingly used today. The aim of this research was to evaluate Trichoderma sp. as growth regulator in tomato plants. Trichoderma sp. isolated from soils was grown on...

Myconanotechnology is the interface between mycology and nanotechnology. In other words, myconanotechnology represents the green synthesis of nanoparticles using fungi. The field is recently gaining attention due to the simple, resource efficient, and ecofriendly nature of fungal biotechnology. Therefore, Myconanotechnology is at the core of cost-e...

In Ecuadorian agriculture, large amounts of chemical fertilizers are used and the cultivation of peppers (Capsicum annuum L.) is no exception in that reality that causes so much damage to the environment, soils, ground and surface waters, as well as the human health. An alternative in recent decades is the use of biostimulants, which reduce the neg...

In promoting new coffee plantations, a decisive element is the use of vigorous seedlings. The objective of this research was to evaluate the effect of biostimulant products on the germination of Arabic coffee (Coffea arabica L.) var. Sarchimor and the possible effect of these treatments on seedling growth in the nursery. The planting material used...

In Latin America, the immense existing biodiversity is associated with the abundance of enormous practically unknown regions and the presence of indigenous peoples, in some cases uncontacted. Along with the profusion of life forms that have been preserved over the years, the danger of genetic erosion caused by indiscriminate exploitation stands out...

The genus Beauveria comprises a cosmopolitan teleomorphic and anamorphic group of entomopathogenic fungi. The aim of this study was to characterize a new isolate of Beauveria sp. and compare it to the LBB-1 commercial Cuban strain. The isolate was collected from ten individuals of the ant Atta insularis and ten adults of the coffee borer (Hy-potene...

The genus Beauveria comprises a cosmopolitan teleomorphic and anamorphic group of ento-mopathogenic fungi. The aim of this study was to characterize a new isolate of Beauveria spp. and compare it to the LBB-1 commercial strain. The isolate was collected from the ant Atta insularis and adults of the coffee borer, respectively. It was cultivated on s...

El objetivo de esta investigación fue estudiar la actividad a nivel bioquímico y molecular de enzimas del estrés oxidativo en plantas de tomate cv. Mariela cultivadas con diferentes concentraciones de plomo (0, 50 y 100 mg kg−1 de PbAc2). Para la actividad bioquímica, se seleccionaron las enzimas superóxido dismutasa (SOD) y glutatión reductasa (GR...

Biofertilizers and biological products are increasingly being used to enlarge the productivity of crops. Of these, microbes known as Plant Growth-Promoting Microorganisms (PGPM) are the most valuable as biofertilizers, having the capacity to directly impact the growth and development of plants. Plant Growth-Promoting Fungi (PGPF) and Plant Growth-P...

The Technical University of Manabí (UTM) has approved more than 50 graduate programs, including specializations, academic master’s degrees with a research trajectory (MATI), and academic masters with a professional trajectory (MATP). In the MATP, the degree can be achieved through a research and development project, a high-level article, or a compl...

El presente trabajo está contemplado en ocho capítulos; tratándose sobre la biotecnología molecular, el cultivo invitro, los métodos de multiplicación acelerada, Aplicación de la biotecnología en el mejoramiento genético, materiales moleculares como apoyo a la selección de materiales vegetales, la conservación de los recursos filogenéticos y el emp...

Los espectaculares avances de la biotecnología en la actualidad ocurren casi a diario, y han marcado una transformación no solo en la producción, la salud y la economía, sino en nuestra propia manera de concebir el mundo, al abrir la posibilidad de crear en un laboratorio un organismo que antes no existía sobre el planeta. La biotecnología está inv...

The elimination of toxic waste in soils, water, and in general in all types of environmental scenarios has become a goal for scientists and environmental organizations, due to the devastating effects it causes on health, biodiversity, soils, and sources of water. The pollutants are divided for study according to their chemical composition in hydroc...

11 Respuestas de crecimiento, contenido de clorofila y rendimiento a la aplicación de lixiviado de vermicompost de estiércol bovino en el pimiento (Capsicum annuum L. híbrido Quetzal) Growth, chlorophyll content and yield responses after application of bovine manure vermicompost leachate in pepper (Capsicum annuum L. Quetzal hybrid) Autores: Resume...

Farmers over the years have thought of fungi and bacteria as pests for their crops, but many of them act in a beneficial way. Biotechnological tools have been used for the isolation, identification and in-depth study of many of these microorganisms, and from those researches, biological controls, biopesticides and biofertilizers have been produced....

La Universidad Técnica de Manabí (UTM) tiene aprobados más de 50 programas de posgrado, entre especializaciones, maestrías académicas con trayectoria de investigación (MATI) y maestrías académicas con trayectoria profesional (MATP). En las MATP la titulación puede realizarse mediante un proyecto de investigación y desarrollo, un artículo de alto ni...

The essential conditions for the in vitro micropropagation of the Ecuadorian cassava varieties INIAP Portoviejo 650 and INIAP Portoviejo 651 were studied. A donor bank consisting of cuttings taken from vigorous, healthy plants was planted. In the in vitro stages, the medium of Murashige and Skoog (MS) was used. Amoxicillin 500® was added to the est...

The agricultural model of the Green Revolution has led to the gradual degradation of soils, which is motivated by the impacts it causes, among which stands out the indiscriminate use of synthetic fertilizers, which while increasing yields to some extent, also acidify the soil, accumulate salts, provoke hydric stress and pollute water and crops. Bio...

The pepper (Capsicum annuum L.) is a vegetable highly prized in the world for its nutritional properties, medical applications and as a condiment to food. In Ecuador it is grown in several provinces, and in all cases high amounts of synthetic chemical fertilizers are used. One option is the use of organic biostimulants that allow clean productions....

The pepper (Capsicum annuum L.) is present in the diet of many people and has great economic value for farmers who are dedicated to the cultivation of this vegetable. This research was carried out at the Faculty of Agronomic Engineering of the Technical University of Manabí, on the La Teodomira experimental campus. The behavior of the Quetzal F1 pe...

RESUMEN Se investigaron las condiciones esenciales para la micropropagación in vitro de las variedades ecuatorianas de yuca INIAP Portoviejo 650 e INIAP Portoviejo 651. Se plantó un banco de donantes con estacas de plantas vigorosas y sanas. En las etapas in vitro se empleó el medio de Murashige y Skoog (1962). En el establecimiento se adicionó Amo...

Growth and yield responses of pepper (Capsicum annuum L.) hybrid Nathalie to a bovine vermicompost leachate Resumen El pimiento (Capsicum annuum L.) es una hortaliza muy apreciada en el mundo por sus propiedades nutritivas, sus aplicaciones médicas y como condimento a los alimentos. En Ecuador se cultiva en varias provincias, y en todos los casos...

RESUMEN El modelo agrícola de la Revolución Verde ha conducido a la degradación paulatina de los suelos, lo cual está motivado por los impactos que causa, entre los que destaca el uso indiscriminado de los fertilizantes sintéticos que, si bien incrementan los rendimientos hasta cierto punto, también acidifican el suelo, acumulan sales, provocan est...

Plant biotechnology is an essential tool that allows agriculture improvement by increasing food production through tissue culture, molecular biology, and crop improvement. At present, agriculture is facing many problems that affect food production seriously; some of these problems are degradation of soils, salinity, contamination with heavy metals...

Purpose The present study was aimed to investigate the effect of a bovine manure vermicompost leachate (BMVL) on growth, total chlorophyll content and yield of pepper (Capsicum annuum L.) hybrid Nathalie. In pepper, the effects of BMVL had not been studied before. Methods Six dilutions of BMVL (1:10, 1:20, 1:30, 1:40, 1:50 and 1:60 v / v), unfertil...

The genus Coffea spp. is the most important of the Rubiaceae family and both Coffea arabica L. and Coffea canephora P. constitute the most economically important species. This research aimed to characterize morphologically, physiologically and biochemically diazotrophic rhizobacteria associated with coffee plants from a living collection, and to st...

Soursop (Annona muricata L.) germplasm, from the central region of the Ecuadorian littoral, has diverse phenotypic characteristics, which have been little studied. The main objective of this research was to characterize in situ the morphological variability of 60 accessions of soursop. The morphological traits were evaluated using 20 quantitative a...

Growth and yield of sesame (Sesamum indicum L.) under the action of two bioles Resumen Los estudios sobre alternativas orgánicas de fertilización son una tendencia mundial, por su incidencia favorable en el consumo saludable de alimentos y la preservación del ambiente. En ese contexto se produce esta investigación, cuyo objetivo fue evaluar las r...

RESUMEN La búsqueda de alternativas orgánicas que sustituyan a la fertilización química es una tendencia mundial ante la necesidad de obtener productos agrícolas con un menor costo ambiental, línea que se corresponde con el objetivo de esta investigación. Se evaluó el efecto de aplicaciones foliares de lixiviados de vermicompost de estiércol bovino...

The term entomopathogen refers to a microorganism capable of causing a disease to arthropods, leading to its death after a short incubation period. Nowadays few species of these microorganisms are known and being used to control a great variety of plague insects that affect the crops. At present, they turn out to be a quite profitable alternative i...

En 1983, después de una década de investigaciones en ingeniería genética, se creó la primera planta transgénica de tabaco. Unos diez años después se aprobó la introducción de plantas transgénicas en la producción agrícola, iniciándose una vertiginosa carrera ascendente en la presencia de los organismos genéticamente modificados (OGMs) en la agricul...

El objetivo de esta investigación fue evaluar las respuestas en variables fisiológicas y el rendimiento en el cultivo del pimiento (Capsicum annuum L.) híbrido Quetzal, a la aplicación de diferentes dosis de vermicompost. La investigación se ejecutó en la Estación Experimental “La Teodomira”, de la Facultad de Ingeniería Agronómica de la Universida...

Sorghum [Sorghum bicolor (L.) Moench] is an important crop after wheat, corn, rice and barley. The aim of this research was to study morphological characterization of the plant population of grain sorghum cultivar CIAP 132R-05 regenerated via somatic embryogenesis under semi controlled conditions in green house. Plants regenerated from somatic embr...

Plant biotechnology is a great tool in several fields of human life such as medicine, pharmacology, agriculture, biomass, and biofuels. The use of nanotechnology represent and improvement in plant tissue culture that is a technique mostly used to produce clones of a plant in a method known as micropropagation with different stages. In this chapter...

Los efectos del plomo (PbAc2) y el níquel (NiCl2) sobre el desarrollo de plantas de arroz y la actividad de enzimas antioxidantes, bajo las mismas condiciones experimentales, se evaluó utilizando cuatro concentraciones (0, 50, 100 y 300 mg kg-1) en dos órganos diferentes de la planta (raíces y hojas). La investigación se realizó de septiembre de 20...

Los efectos del plomo (PbAc2) y el níquel (NiCl2) sobre el desarrollo de plantas de arroz y la actividad de enzimas antioxidantes, bajo las mismas condiciones experimentales, se evaluó utilizando cuatro concentraciones (0, 50, 100 y 300 mg kg-1) en dos órganos diferentes de la planta (raíces y hojas). La investigación se realizó de septiembre de 20...

El efecto del plomo (PbAc2) y el níquel (NiCl2) en el desarrollo de plantas de arroz y la actividad de enzimas antioxidantes, bajo las mismas condiciones experimentales, se evaluó utilizando cuatro concentraciones (0, 50, 100 y 300 mg.kg-1) y dos partes diferentes de la planta (raíces y hojas). La investigación se realizó de septiembre de 2010 a ma...

Sorghum [Sorghum bicolor (L.) Moench] is an important crop after wheat, corn, rice and barley. The aim of this research was to study morphological characterization of the plant population of grain sorghum cultivar CIAP 132R-05 regenerated via somatic embryogenesis under semi controlled conditions in green house. Plants regenerated from somatic embr...

La investigación tuvo como objetivo evaluar el comportamiento productivo del maíz (Zea mays L.) híbrido AGRI 104 con diferentes densidades y sistema de siembra bajo condiciones de riego localizado. La investigación se realizó en el campus experimental La Teodomira de la Facultad de Ingeniería Agronómica de la Universidad Técnica de Manabí, Ecuador,...

Heavy metals are dangerous pollutants of water and soil coming, in first place, from anthropogenic activity. Lead (Pb) can be accumulated in soil surface and it is easily take by plants inducing many symptoms of toxicity. Several research suggests that Pb toxicity leads to the induction of key enzymes of antioxidant defense system in tomato plants....

El contenido de pigmentos fotosintéticos, en particular las clorofilas, está relacionado con la adaptación de los genotipos a las condiciones climáticas en que estos se desarrollan. En varias especies, la cantidad de clorofila está relacionada con el rendimiento de los cultivos. El objetivo de la presente investigación fue determinar el contenido d...

Wild Nicotiana species are commonly used in tobacco's breeding programs to obtain cultivars of enhanced productivity , and to improve its tolerance or resistance to diseases or different types of stress. In Cuba, tobacco production is one of the main sources of economic income and during the last decades several new tobacco varieties have been gene...

Wild Nicotiana species are commonly used in tobacco's breeding programs to obtain cultivars of enhanced productivity , and to improve its tolerance or resistance to diseases or different types of stress. In Cuba, tobacco production is one of the main sources of economic income and during the last decades several new tobacco varieties have been gene...

Abstract Soursop (A nnona muricata L.) is a subtropical fruit tree very desirable for the flavor of its fruit and its nutritional value. In Ecuador, this fruit species grows endemically in the south of Manabí. For this reason the aim of this research was to characterize molecularly a population of 60 individuals distributed in four counties (Jipija...

Abstract Soursop (A nnona muricata L.) is a subtropical fruit tree very desirable for the flavor of its fruit and its nutritional value. In Ecuador, this fruit species grows endemically in the south of Manabí. For this reason the aim of this research was to characterize molecularly a population of 60 individuals distributed in four counties (Jipija...

La agricultura es una actividad productiva principal en Sudamérica, que responde por una bue-na parte de las producciones y exportaciones de la región. En esta investigación se contrastó la producción agrícola en Sudamérica con variables relacionadas con el uso de la tierra y la utilización de insumos contaminantes que provocan daños ambientales, d...

Agriculture is a main productive activity in South America, which accounts for a large part of the region production and exports. In this research, agricultural production in South America was contrasted with variables related to the use of land and the application of polluting inputs causing environmental damage, leaving an ecological footprint in...

Este libro está dedicado a la Fisiología de las plantas superiores y predomina el enfoque agronómico y ambiental, resultante de nuestra propia profesión agronómica y nuestra experiencia en la docencia y la investigación. El enfoque agronómico del texto se debe a que está dirigido principalmente a los estudiantes de las carreras universitarias de...

In Cuba, biostimulators are being obtained, based on oligogalacturonides (Pectimorf) and brassinosteroids analogs (Biobras-6, Biobras-16 and MH-5) which were effective when applied in a single phase of the micropropagation processes for plant multiplication. However, the question remained if there could be an improvement when they were applied duri...

Actividad de enzimas del estrés oxidativo en plantas de tomate cv. Amalia en respuesta al plomo. Horticultura Brasileira 35: 216-223. Actividad de enzimas del estrés oxidativo en plantas de tomate cv. Amalia en respuesta al plomo RESUMEN La contaminación de los suelos por metales pesados es un resultado de la actividad humana, agricultura e industr...

En el Sur de la provincia de Manabí se llevó a cabo un estudio sobre la situación socioeconómica de la población rural insertada en el área de dispersión silvestre de guanábana (Annona muricata L.). La investigación se planteó como objetivo el analizar el estado socioeconómico actual de la población insertada en el área de distribución natural de l...

The present work was aimed to obtain a model for the determination of the leaf area in function of the length and width of the leaves in pepper (Capsicum annuum L.) hybrid Salvador. The research was carried out in nursery conditions at the Experimental Campus La Teodomira, located in the parish of Lodana, Santa Ana, province of Manabí, Ecuador, in...

To know about the etiology of any pathological event has a great value, since the effectiveness of the regulatory practices designed and their economic, social, and environmental sustainability will depend on it. A sustainably functional disease management system is based on a set of knowledge, in which case diagnosis and disease risk assessment pl...