A5017748652- Seed and Plant Biochemistry
- Seed Germination and Physiology
- Microbial Metabolites in Food Biotechnology
- Agriculture Sustainability and Environmental Impact
- Plant Water Relations and Carbon Dynamics
- Agricultural and Food Production Studies
- Psidium guajava Extracts and Applications
- Environmental and Cultural Studies in Latin America and Beyond
- Plant Genetic and Mutation Studies
- Consumer Attitudes and Food Labeling
- Ecology and Vegetation Dynamics Studies
- Environmental and Ecological Studies
- Seedling growth and survival studies
- Crop Yield and Soil Fertility
- Botanical Research and Applications
- Genetic diversity and population structure
- Ginseng Biological Effects and Applications
- Social Issues and Sustainability
- Phytochemistry and biological activity of medicinal plants
- Allelopathy and phytotoxic interactions
- Leaf Properties and Growth Measurement
- Plant Micronutrient Interactions and Effects
- Fern and Epiphyte Biology
- Irrigation Practices and Water Management
- Tree-ring climate responses
Arturo Prat University
2009-2023
Abstract Quinoa ( Chenopodium quinoa Willd., Amaranthaceae) is a grain‐like, stress‐tolerant food crop that has provided subsistence, nutrition, and medicine for Andean indigenous cultures thousands of years. contains high content health‐beneficial phytochemicals, including amino acids, fiber, polyunsaturated fatty vitamins, minerals, saponins, phytosterols, phytoecdysteroids, phenolics, betalains, glycine betaine. Over the past 2 decades, numerous nutraceutical products processes have been...
Little is known about varietal differences in the content of bioactive phytoecdysteroids (PE) and flavonoid glycosides (FG) from quinoa (Chenopodium Willd.). The aim this study was to determine variation PE FG among 17 distinct sources identify correlations genotypic (highland vs. lowland) physico-chemical characteristics (seed color, 100-seed weight, protein content, oil content).PE concentrations exhibited over four-fold across sources, ranging 138 ± 11 µg g(-1) 570 124 total 192 24 804 91...
Antimicrobial potential of quinoa seeds from six diverse seeds, grown in three distinctive geo-graphical zones Chile, was correlated with their total phenolic content (TPC), flavonoid (TFC) and saponin (TSC). The were Ancovinto, Cancosa, Cahuil, Faro, Regalona Villarrica. A significant influence source on chemical composition observed. Extracts all samples showed antimicrobial activity the range 8.3 - 14.8 mm inhibition zone for E. coli 8.5 15.0 S. aureus. Cancosa had highest action. TPC TFC...
The influence of the components saline stress (osmotic and ionic factors) were evaluated during germination four quinua (Chenopodium quinoa Willd.)selections in Chile, two collected arid northern highland region with soils (Amarilla Roja) other from rainy southern non-saline (Hueque Pucura).The seeds treated different concentrations (0, 0.2, 0.4, 0.8 1.2 M NaCl).Germination kinetics shows that control treatments selections reach 100% germination.With application 0.4 NaCl (LD50max) was...
The broad distribution of quinoa in saline and non-saline environments is reflected variations the photosynthesis-associated mechanisms different ecotypes. aim this study was to characterize photosynthetic response high salinity (0.4 M NaCl) two contrasting Chilean genotypes, Amarilla (salt-tolerant, salares ecotype) Hueque (salt-sensitive, coastal ecotype). Our results show that stress induced a significant decrease K+/Na+ ratio roots an increase glycine betaine leaves, particularly...
Throughout evolution, plants have developed different strategies of responses and adaptations that allow them to survive in conditions abiotic stress. Aloe vera (L.) Burm.f. is a succulent CAM plant can grow warm, semi-arid, arid regions. Here, we tested the effects preconditioning treatments water availability (100, 50, 25% soil field capacity, FC) on response A. prolonged drought growing hyper-arid core Atacama Desert. We studied leaf biomass, biochemical traits, photosynthetic traits...
Abstract The intraspecific evolutionary history of South American xerophytic plant species has been poorly explored. tree Prosopis chilensis a disjunct distribution in four regions: southern Peru, Bolivia, central–western Argentina and central Chile. Here, we combined phylogeographical (based on chloroplast nuclear markers), morphological climatic data to evaluate the relative contribution historical demo-stochastic adaptive processes differentiating areas distribution. results obtained with...
Quinoa, a relatively unknown crop in Chilean agriculture, is cultivated the Andean area north of country, and coastal unirrigated lands southern central area. However, from pre-Columbian times (750 bc), diverse indigenous ethnic groups that inhabited Chile used quinoa as part their diet. Today, with largest cultivation (176 ha) found highlands Iquique I Region. Recently, interest cultivating for its food value cash has increased, considerable research underway. A review national databases...
Durante los meses de enero y febrero 2012 se realizó una investigación en la ciudad Iquique, Región Tarapacá, por un equipo luso-chileno.El objeto del estudio fue evaluación flora medicinal utilizada residentes costera, opción o no tener acceso a medicina convencional.La pesquisa hace parte proceso peso
Segun el INE (2007), la region con mas superficie en Chile es Tarapaca, 1.357 ha de quinua, que 2009 se reduce a 250 ha, mostrando una drastica disminucion del 81,5%, lo anterior consecuencia las inestables condiciones ambientales Altiplano, traduce lluvias (Arenas, 2011). El principal productor quinua mundo Bolivia 64.789 hectareas, 38.257 toneladas totales y 590 kg
As the most basal monilophytes, eusporangiate ferns can provide key insights into origins of plant physiological adaptations. The genus Equisetum, morphologically and physiologically unusual ferns, has a stomatal apparatus that is unique among all plants. Patterns diffusive conductance (g w ) were measured in giant horsetail, Equisetum giganteum L. southern South America. Maximum g values (<200 mmol·m −2 ·s −1 low comparison with typical angiosperm leaves, but range other pteridophytes....
Initiatives to restore natural ecosystems have had little success in arid and hyperarid ecosystems. In this context, the seedling establishment is particularly affected by drought patterns climatic variability. Likewise, effect of plant provenance on forest restoration remains unclear, although previous studies concluded that some seed locations might be better able tolerate water stress. study, we examined physiological mechanisms involved stress resistance Prosopis tamarugo alba seedlings...
Chenopodium quinoa Willd. is an edible crop plant adapted to the climatic conditions of South American Andes, where it thrives under extreme environmental such as saline soils, drought, high UV radiation and broad temperature fluctuations. The prolonged exposure this salinity low relative humidity has promoted development efficient mechanisms retain water within intracellular compartments avoid desiccation, including accumulation osmoprotectants. In study, effect osmotic stress (250 mM KCl)...
The abandonment of ancestral techniques and the incorporation new technologies in production systems for cultivation quinoa has resulted overexploitation soils, a loss fertility, water imbalance, native vegetation cover plain land areas, other negative effects on southern Altiplano agricultural sustainable system. One methods to reduce wind erosion improve soil environmental conditions is establishing vegetative barrier. effect t’ola [Parastrephia lepidophylla (Wedd.) Cabrera] as barrier...