A5101641654- Crop Yield and Soil Fertility
- Genetics and Plant Breeding
- Heavy Metal Exposure and Toxicity
- Mercury impact and mitigation studies
- Heavy metals in environment
- Wheat and Barley Genetics and Pathology
- Mining and Resource Management
- Plant and soil sciences
- Agriculture and Social Issues
- Phytochemistry Medicinal Plant Applications
- Soil Science and Environmental Management
- Semantic Web and Ontologies
- Advanced Data Storage Technologies
- Bee Products Chemical Analysis
- Genetics, Aging, and Longevity in Model Organisms
- Essential Oils and Antimicrobial Activity
- Chromosomal and Genetic Variations
- Fluoride Effects and Removal
- Coastal wetland ecosystem dynamics
- Wildlife Ecology and Conservation
- Aging, Health, and Disability
- Genetic Mapping and Diversity in Plants and Animals
- Plant Disease Management Techniques
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Geological and Tectonic Studies in Latin America
Universidad Tecnica de Machala
2011-2024
University of Guelph
2018-2020
Universidad Nacional de La Pampa
2007
Maize ( Zea mays L.) yield potential has not undergone genetic improvement during the hybrid era, yet substantial occurred for tolerance to high plant population densities. As many crops including maize are approaching plateaus, it may be necessary exploit other means of increasing grain yields. In this study, we examine reasons why occurred. Using a four‐way breeding cross representing commercial germplasm pool, demonstrate that lack in is due two attributes being antagonistic. We then...
Se analizó el contenido total de Hg en sedimentos superficiales tres localidades la zona costera Provincia El Oro, Ecuador. En cada localidad se seleccionaron 9 zonas muestreo, los cuales evaluó: sólidos totales (ST), humedad (H), materia orgánica (MO) y total. La concentración del fue determinada por espectrofotometría absorción atómica, generación hidruros con atomización una celda cuarzo. Las concentraciones presentaron diferencias significativas entre las localidades, mayor estero Huaylá...
The plecos (Loricariidae) fish represent a great model for cytogenetic investigations due to their variety of karyotypes, including diploid and polyploid genomes, different types sex chromosomes. In this study we investigate Transancistrus santarosensis rare loricariid endemic Ecuador, integrating methods with specimens' molecular identification by mtDNA, describe the species karyotype. We aim verify whether chromosomes are cytologically identifiable if they associated accumulation...
The study of mercury content in marine sediments is presented nine sampling stations Estero Huaylá Puerto Bolívar (Ecuador), by means spectrophotometry atomic absorption with flame nebulization and the generation hydrides atomization a quartz cell. ecological risk assessment was determined calculating pollution factor (fi) potential index (IREP) at each point. result obtained, for metal, compared values existing sediment quality guide: CEL (Concentration limit effect) CEP probable effect)....
RESUMENSe evaluaron las concentraciones de Hg en raíces absorbentes y aéreas Rhizophora mangle L., cuatro zonas costeras la provincia El Oro, Ecuador, correspondientes a Puerto Hualtaco, Estero Huaylá, Jambelí Bajo Alto durante los meses noviembre 2014 (periodo poca lluvia) enero 2015 lluvia).Se recolectaron un total 80 raíces, 10 cada zona.El se determinó mediante espectrofotometría absorción atómica acoplado generación vapor hidruros frío expresado mg/kg (materia seca).La concentración no...
There is plenty of multimedia content available in our homes, stored disk drives, personal computers, or digital cameras. Protocols like Universal Plug and Play (UPnP) allow sharing this among storage devices displaying them renderers the local area networks homes. However, UPnP does not provide native support for exchange resources across homes neither it means to describe so as facilitate search resources. In paper we a set extensions protocol uniform access belonging different well...
En esta investigación se cuantificó el contenido de cadmio “Cd” presente en suelo, hojas y almendras cacao, dos plantaciones la provincia “El Oro” con finalidad relacionar los resultados obtenidos límites máximos preestablecidos por parte del reglamento 2021/1323 Unión Europea, para almendra cacao y, libro VI TULSMA las concentraciones presentes suelo. Las muestras estudio tomaron distintos puntos forma aleatoria ambas plantaciones, posteriormente generar una muestra compuesta cada tipo...
Groundwater is the largest freshwater reserve on planet, and its quality plays a fundamental role in human well-being economic development. However, it sometimes contains potentially harmful compounds, such as fluoride high concentrations, which has led to implementation of standards ensure water potability. This study evaluates concentrations groundwater from state Paraguarí, Paraguay, studies joint occurrence with elements calcium, magnesium, sodium, potassium. Forty-one samples were...
Abstract Genetic improvement in maize ( Zea mays L.) grain yield is associated with improvements dry matter accumulation during the grain‐filling period and ability to maintain partitioning (i.e., harvest index) when grown at higher plant population densities. Although several attributes have been identified that lead improved period, enabled maintenance of index densities remain elusive. Using Ontario ERA hybrids represent five eras genetic Ontario, we examined sink establishment grain. We...
El Estero Huaylá, ubicado en la Provincia de Oro (Ecuador) ha sido impactado, química y biológicamente, por diferentes actividades antropogénicas como industria agrícola, camaronera, laboratorios criaderos larvas, aguas servidas descargas directas efluentes domésticos sin el tratamiento adecuado. En este trabajo se determinó presencia metales mercurio plomo los sedimentos marinos su toxicidad usando Caenorhabditis elegans modelo. Muestras nueve sitios del estero fueron secados analizados...
La calidad de los recursos hídricos es un tema gran importancia debido a su impacto en el ecosistema, la salud humana y desarrollo sostenible. En esta investigación se determinó del agua superficial río Jubones, sección geográfica correspondiente paso por cantón El Guabo, mediante aplicación índice (ICA) National Sanitation Foundation (NSF). Para estudio delimitaron 4 puntos muestreo aplicó expresión matemática base resultados obtenidos análisis 9 parámetros fisicoquímicos establecidos...
The province of El Oro is the most important gold mining area in Ecuador, but activity has caused damage to ecosystem and human health, due dumping extraction waste loaded with heavy metals into Calera River, which a tributary Yellow River Puyango river. This work presents results evaluation toxicity water sediments using nematode Caenorhabditis elegans as bioindicator for environmental monitoring. quantification by atomic absorption spectroscopy samples collected along both sediments,...