José Miguel Cotes TorresNational University of Colombia | UNAL · Department of Agricultural Sciences (Medellín)
José Miguel Cotes Torres
Ingeniero Agrónomo Mtr. Dr.
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Introduction
Publications
Publications (108)
Phytophthora infestans is the most important disease in potato crops. Its control is based on the use of chemical products that have developed pathogen resistance and high economic and environmental impacts. To reduce these effects, the use of plant varieties or cultivars resistant to this pathogen has been proposed. The aim of this study was to ev...
This work was carried out in Antioquia, Colombia, in a collection of the Furcraea and Agave genera, important in the country for manufacturing strings, sacks, geotextiles, and handicrafts Currently, to enhance its use, applications have been developed in textiles, biodegradable materials and thermo-acoustic insulation, among others. The aim of this...
This study presents a comparison of the usual statistical methods used for crop model assessment. A case study was conducted using a data set from observations of the total dry weight in diploid potato crop, and six simulated data sets derived from the observationsaimed to predict the measured data. Statistical indices such as the coefficient of de...
Plant growth analysis has been widely used to study factors that influence plant growth. This analysis uses a set of quantitative methods that describe and analyze the growth of plants and their organs. It uses data from direct measurements (weight, area, volume) and quantifies and analyzes growth using indexes based on models defined by mathematic...
The leaf area index (LAI) is defined as the proportion of leaf area per unit of land area. It is also considered as an essential factor in the crop's ability to capture solar energy. Direct methods of LAI estimation involve significant areas of cultivation and individually measuring the total leaf area, which is not an accurate method to assess the...
Characterization of plant genetic resources is the first step to conserve plant diversity. Morphoagronomic characterization is a method that requires a selection of sensible descriptors, which are characteristics that define a phenotype. Sapodilla (Matisia cordata Bonpl.) is a plant genetic resource and is an important part of the agricultural trad...
Potatoes are one of the crops with the greatest influence worldwide, and Colombia is the most important exporter of “Criolla” or diploid potato. Universidad Nacional de Colombia has developed varieties of new diploid potatoes with high antioxidant properties and colored flesh: Primavera, Paola, Violeta, Milagros, and Paysandú. The aim of this resea...
Solanum phureja is one of the most important crops for farmer economy in Colombia, and Phytophthora infestans is considered its main limiting disease. This pathogen is managed using chemical products, generating high production costs as well as environmental pollution. The use of resistant varieties is a strategy that is currently well positioned f...
Tamarind (Tamarindus indica L.) is a plant genetic resource, which is important for the tropical dry forest economy of Antioquia (Colombia); despite being an introduced species, the tamarind has adapted to the region, becoming part of its cultural identity. Nevertheless, the lack of scientific studies of tamarind has shown this crop to be an underu...
In order to contribute to the technological development of the potato crop system, the present study was developed with the aim of adapt the supply - demand paradigm to the resource capture processes and allocation of nutrients to simulate the growth and development of the Criolla Colombia variety potato plant. In this paper the process of formulat...
En aras de contribuir al desarrollo tecnológico del sistema productivo de la papa criolla, se desarrolló la presente investigación cuyo objetivo fue adaptar el paradigma fuente demanda a los procesos de captura y asignación de nutrientes para simular el crecimiento y desarrollo de la planta de papa criolla. Se presenta el proceso de formulación, pa...
Rubber (Hevea brasiliensis) is a specie of late yield performance. This makes breeding programs long-term and the decisions taken are based in the base population genetic parameters. The aim of
this research was to determinate a genetic potential of a rubber segregating population through the use of repeatability as a parameter, in order to make de...
Recientemente se detectó en Colombia la presencia del virus mop-top de la papa (PMTV, Pomovirus), transmitido por zoosporas del protozoo Spongospora subterranea f. sp. subterranea, agente causal de la sarna polvosa de la papa. Esta investigación se planteó con el fin de evaluar las características genotípicas de las cepas virales del PMTV obtenidas...
Parasitoids native to tropical Africa have been released in the Americas for the biological control of the
coffee berry borer (CBB), but their establishment has been checkered. A tritrophic distributed maturation
time model for the coffee plant – CBB – three parasitoids (Phymastichus coffea, Cephalonomia stephanoderis,
Prorops nasuta) system was pr...
El uso de diseños aumentados en las etapas tempranas, en los programas de fitomejoramiento, son una herramienta valiosa para las decisiones de selección, pero en general es poco lo que se implementa en estos programas. Cuando se utilizan, es común seleccionar los genotipos que se evalúan, como iguales o superiores al mejor, al peor o al promedio de...
This article proposes and develops the concept of technological complexity (TC) as a useful and simple tool for grouping key attributes that give added value to a product. In addition, it reports an empirical application of this concept to two different food products (cured ham and cured sausage). The authors used a mixed-effects multi-nomial logis...
It is necessary to study the photosynthate distribution pattern and allocation in Guaneña and Latina potato varieties, which come from the Colombia variety and are relatively new in agriculture, for potato crops in Colombia. The aim of this study was to determine the distribution behavior of dry matter among the organs that make up the potato plant...
Se realizó un bioensayo con 88 genotipos de Solanum phureja para evaluar la respuesta a la sarna polvosa de la papa. Para la obtención del material vegetal, se sembraron tubérculos en bolsas plásticas de 3 kg de capacidad. Cada planta fue inoculada a los 25 días después de siembra, con una aplicación directa a la raíz de 10 g de suelo infectado a u...
La sarna común de la papa, causada por bacterias del género Streptomycetes, es una enfermedad de difícil manejo agronómico que se encuentra en todas las zonas de producción de papa en el mundo, por lo que la obtención de cultivares resistentes a la enfermedad es uno de los componentes del manejo integrado de la enfermedad. Hasta ahora se han obteni...
The aim of the research is to classify and show some features of the bovine production systems in Piedemonte Llanero of Meta Department and South of Casanare. For this purpose, we selected 14 farms representative of the region. To classify production systems we used a cluster analysis. Thus, we obtained three types of production systems: 1) Traditi...
p>La gota de la papa causada por Phytophthora infestans (Mont.) de Bary, es una enfermedad que causa grandes pérdidas al cultivo, y requiere una frecuente aplicación de productos químicos. El pyraclostrobin, tiene un modo de acción que se basa en la inhibición de la respiración mitocondrial para proteger de enfermedades fúngicas a diferentes cultiv...
Trap crops have been considered an alternative strategy to reduce the inoculum of soil pathogens such as Spongospora subterranea f.sp. subterranea. In this work, the incidence of this pathogen was evaluated at three consecutive sowings using different alternative hosts. Plants were sown in pots containing 2 kg of soil inoculated with 1x105 cystosor...
El objetivo del trabajo fue la selección de variables edáficas relacionadas con la producción de banano, así como la caracterización espacial de éstas. Se evaluaron 15 variables químicas, 18 físicas, y dos atributos de la planta que fueron cantidad de raíz funcional y peso del racimo, en 130 sitios, correspondientes a igual número de plantas. Los s...
For a better understanding of the molecular mechanisms involved in the interaction between Solanum phureja Juz. et. Buk. and Spongospora subterranean (Wallr.) Lagerh, the causal agent of powdery scab disease, a 454 transcriptome analysis was carried out using one susceptible (Criolla Colombia) and one tolerant (Criolla Latina) potato cultivars. The...
El objetivo de la investigación es clasificar y presentar algunas características de los sistemas de producción bovina en el Piedemonte Llanero del Departamento del Meta y del sur del Casanare. Para tal fin, se seleccionaron 14 explotaciones representativas de la región. Para clasificar los sistemas de producción se empleó un análisis de conglomera...
Bajo las condiciones ambientales de la Sabana de Bogotá, se realizó un análisis de crecimiento funcional en las variedades de papa Monserrate, Única, Zipa y Morita pertenecientes a la especie Solanum tuberosum subsp. andigena. Se establecieron parcelas únicas de 90 m2 a una densidad de 33.333 plantas ha-1. Semanalmente se evaluó el peso seco por ó...
En esta investigación se compararon dos métodos de detección de Spongospora Aterranea f. sp. subterranea en raíces de plantas hospederas, mediante observación microscópica y PCR en tiempo real (qPCR). Para esto, se evaluaron 20 especies vegetales que fueron inoculadas con una concentración de 1,25x105 quistosoros.g-1 de suelo. Fue obtenida una mue...
Viral diseases are one of the most limiting factors in potato production. Recently, vein yellowing (VY) caused by PYVV has become one of the diseases with the highest incidence in potato crops in Colombia. In this work, symptoms commonly associated with viral infection were evaluated in potato crops from four provinces of Colombia, with emphasis in...
In order to evaluate the resistance to Spongospora subterranea f. sp. subterranea on 105 genotypes of Solanum phureja (local name in Colombia papa criolla), bioassays were conducted through propagation by lateral stem cuttings. Inoculation was performed with a 1 x 106 sporeballs mL-1 solution. The level of resistance or susceptibility of each genot...
Potato powdery scab, caused by Spongospora subterranea f. sp. subetrranea, is a disease that limits worldwide potato crop production. Incidence of the disease has been increasing in Colombia, thereby affecting tubers production, so far effective control methods have yet to be developed. The aim of this research was to establish the host range plant...
Se evaluaron algunas características morfológicas de raíces en 51 genotipos de Solanum phureja y su relación con la respuesta al ataque de la sarna polvosa. En materas fueron sembrados tubérculos de los diferentes genotipos y se precisó el color de la cáscara y la forma. Tres semanas después se extrajeron las raíces y se realizaron cortes histológi...
El objetivo de este trabajo es determinar si existe relación entre las características morfológicas de genotipos de Solanum phureja de la colección de trabajo de la Universidad Nacional de Colombia y la respuesta al ataque de la sarna polvosa en tubérculos. Se evaluaron 93 genotipos y de cada uno se cosecharon diez tubérculos en el municipio de La...
Se realizó la caracterización morfoagronómica de 2285 genotipos provenientes de 20 familias obtenidas a partir de cruzamientos entre progenitores diploides, cultivados y silvestres de las especies Solanum tuberosum grupo Phureja, Solanum stenotomun subsp. stenotomun, Solanum stenotomun subsp. goniocalyx y Solanum bukasovii. El experimento fue estab...
El modelo de distribución de retardos de tiempo se utiliza ampliamente en la modelación ecológica para simular la dinámica de poblaciones, principalmente de insectos, aunque también se usa para modelar procesos de crecimiento y desarrollo en plantas, en los que las etapas fenológicas son un elemento importante. En este trabajo se presenta el desarr...
Detection and molecular characterization of Potato virus S (PVS, Carlavirus) from Colombia. In Colombia, potato crops are affected by a wide variety of viruses such as PVY, PLRV, PVX, PMTV and PVS. Unfortunately, there are very few studies on the biology, distribution and pathogenicity of these viruses; this situ-ation is even worse for the latent...
In Colombia, potato crops are affected by a wide variety of viruses such as PVY, PLRV, PVX, PMTV and PVS. Unfortunately, there are very few studies on the biology, distribution and pathogenicity of these viruses; this situation is even worse for the latent virus PVS. In this work, we evaluated the presence ofPVS in four Colombian provinces (Antioqu...
Background: using mathematical models to characterize and estimate egg production curves is of great
importance for assessing the productive efficiency of hens. These models can be used in identifying and
modeling real-time factors affecting animal production and implementing corrective measures to minimize
its effect. Objective: we compared the ab...
This paper is the second of three on the coffee production system consisting of (1) the coffee growth and
development, (2) coffee/coffee berry borer (CBB) dynamics, and (3) the role of the CBB parasitoids and
complementary strategies for control of CBB. The CBB model is based on a prior model by Gutierrez et al.
(1998) with the following modificati...
Crop association is defined as the growth and development of two or more species in the same place during a part or all of the vegetative cycle. Maize and bean association affect morphological and physiological attributes of both species, which is manifested in the biomass accumulated in the different compartments and, finally, in the yields. The a...
Potato late blight is a common name for the most important and destructive disease caused by Phytophthora infestans (Mont. de Bary) in potato crops. Resistance genes for the disease have been found in Solanum phureja, and are of great importance in implementing important tools such as plant breeding in disease management The aim of this study was t...
RESUMEN La sarna polvosa de la papa causada por el patógeno Spongospora subterranea (Wallr) Lagerh f. sp. sub-terranea Tomlinson es una de las enfermedades más limitantes del cultivo de papa. El mejoramiento genético se presenta como un componente importante del manejo integrado del patógeno. El objetivo de este estudio fue estimar la heredabilidad...
La sarna polvosa de la papa es causada por Spongospora subterranea f. sp. subterranea, parasito obligado y patógeno del suelo, que afecta el sistema radicular y tubérculos de papa. Igualmente es vector del pomovirus Potato mop-top virus (PMTV). Este organismo posee quistosoros como estructuras de resistencia las cuales le confieren la posibilidad d...
The potato (Solanum tuberosum L.) crop is strongly affected by different viruses that reduce yield and the quality of seed tubers. Knowledge of distribution and genetic variability of these pathogens is essential to support integrated pest management and breeding programs. In this research, the presence and molecular variability of PVX in potato cr...
Determination of optimal conditions for Spongospora subterranea zoospore release on bioassays Potato powdery scab is caused by Spongospora subterranea f. sp. subterranea, an obligate parasite and soil-borne pathogen which affects the root system and tubers. It is also a vector of the pomovirus Potato mop-top virus (PMTV). This organism has resistan...
Objective: to identify the main biophysical, technological, social, and economic features of dual-purpose cattle system (DPCS) in the low Colombian tropic. Methods: detail surveys were conducted through technical visits to 14 farms at the Piedemonte Llanero region in Meta and Casanare provinces. The information obtained was processed by multi-varia...
Eight methods were used to estimate degree-days in four Colombian localities. Four methods have been previously proposed
in literature: Simple Sine, Double Sine, Simple Triangle, and Double Triangle methods. The other four methods are proposed
in this research: Simple Logistic, Double Logistic, Simple Normal, and Double Normal. The estimation of th...
The potato (Solanum tuberosum L.) crop is strongly affected by different viruses that reduce yield and the quality of seed tubers. Knowledge of the distribution and genetic variability of these pathogens is essential to support integrated pest management and breeding programs. In this research, the presence and molecular variability of PVX in potat...
This paper explores 2 different probabilistic models explaining willingness to pay premium prices for high-quality cured products from the swine industry. Seven cured pork products (sausage, fuet, ham, loin, shoulder, salami and pepperoni) were studied in 9 food-stores in Valladolid, Spain. Consumers of the products were interviewed (686 completed...
This paper is the first of three on the coffee production system consisting of (1) the coffee plant, (2) coffee berry borer (CBB) and (3) the role of CBB parasitoids. A previous simulation model of the coffee plant was developed using data from Brazil where coffee phenology is characterized by distinct seasonal flowering (Gutierrez et al., 1998). I...
Tamarillo virus disease is caused in Colombia by a complex of at least seven viruses, including some members of the genera Potyvirus, Cucumovirus, Polerovirus and Tobamovirus. The propagation of this fruit crop is made by sexual seed; therefore, it is important to warranty its health, especially because PVY and PLRV can be transmitted through this...
Incidence of potyvirus and molecular characterization of PVY in potato (Solanum tuberosum L.) growing regions of Colombia
Título corto: Incidencia de potyvirus en cultivos de papa de Colombia
Resumen
Los problemas virales reducen los rendimientos y la calidad del tubérculo semilla en cultivos de papa de todo el mundo. Esta investigación se plante...
Potato mop-top virus (PMTV, Pomovirus) was detected recently in Colombia. PMTV is transmitted by zoopores of the protozoan Spongospora subterranean f. sp. subterranea, the causal agent of powdery scab in potato. The goal of this study was to assess the genotypic characteristics of viral strains of PMTV obtained from 20 soil samples of potato crops...
The Tamarillo virus disease is one of the most limiting problems of this crop in Colombia. In this research we evaluated, as a source of inoculum, seeds from fruits collected in the field, as well as nursery stocks from Antioquia, Cundinamarca, Nariño and Putumayo, and seedlings germinated under greenhouse conditions. These assessments were made by...
Tamarillo is one of the main fruit crops in the Colombian andean region. However, during the past years, there has been a drastic reduction in the total crop area due to the detrimental effect of a disease known as Virosis. In spite of the economic impact of this disease, there is little knowledge about the taxonomical identity of its associated vi...
The main objective of this research was to analyze the behavior of 12 rice (Oryza sativa L.) genotypes from Colombia in five environments during 2005 and six environments during 2006. The Bayesian methodology was used to estimate genotype yield averages, Shuklas variance to determine phenotypic stability and the Bayesian Yield-Stability (BYS) inde...
Fixed linear models have been used for describing genotype x environment interaction (GE). Previous attempts have been made to assess the predictive ability of some linear mixed models when GE components are treated as random effects and modeled by the factor analytic (FA) model. This study compares the predictive ability of linear mixed models whe...
Tamarillo is one of the main fruit crops in the Andean region of Colombia. However, due to expansion of viral diseases, the cultivated area has undergone a rapid decline during recent years. In this work, we report the taxonomical identity of some of the viruses present in the main tamarillo producing regions in Colombia. The presence of AMV, CMV,...
n recent years, genetic studies that supports the plant breeding program for improve the nutritional value of potato tuber
have been very important. Solanum tuberosum Group Phureja is a species with high potential for exportation and better nu-
tritional characteristics than species from other groups. In this research we estimate de heritability by...
Potato is one of the most important crops in Colombia, reaching
about 162.000 ha and a production of more than 2.721.396 t. This crop
is affected by various pests and diseases, including the tuber moths,
late blight and different viruses. Virus diseases reduce yields and
tuber quality of potato worldwide. PLRV is one of the most limiting
viruses of...
The objective of this research was to evaluate the adaptability and phenotypic stability of 12 genotypes of rice with and without irrigation, to select genotypes with wide or specific adaptations. To evaluate adaptability the variable grain yield was used. Eight experiments in the Departments of Meta, Tolima and Huila located in the region east of...
In recent years, genetic studies that supports the plant breeding program for improve the nutritional value of potato tuber have been very important. Solanum tuberosum Group Phureja is a species with high potential for exportation and better nutritional characteristics than species from other groups. In this research we estimate de heritability by...
Potato late blight (Phytophthora infestans), is this crop's most important disease in Colombia. An alternative in reducing the high dependence on fungicides to control the potato late blight includes developing resistant plant varieties, such as the ones recently delivered in Colombia (Pastusa Suprema and Esmeralda), which show high acceptance leve...
Tomato tree (Solanum betaceum) is an andean fruit which, due to its high nutricious value and unique organoleptic properties, has very good potential for industrial processing and international marketing. In Antioquia, Colombia, this crop faces several phytosanitary problems, of which viral infections by species of the Potyvirus genus are the most...
With the aim of quantifying the genotype-environment interaction (GEI) and the phenotypic stability in multibreed bovine population of the Colombian Northwest, registries from 16 herds located in three agroecological regions (E1, E2, E3) from low tropic systems (humid subtropic forest, humid tropic forest and dry tropic forest, were collected from...
One of the most limiting factors of potato cultivation is Phytophthora infestans, the causal agent of "Late blight". The chemical control of this disease not only responds for 7 to 10% of total crop costs, but also takes a considerable toll on the environment due to resulting pollution. Thus, the search and application of alternative practices for...
Potato, the most important agricultural product in the Colombian Andean economy, has in the guatemalan potato moth (Tecia solanivora Povolny) its principal pest, the management of which is based on intensive use of pesticides. A potential alternative to these chemical agents is the application of plant products. Under controlled conditions, the cur...
The objective of this work was to evaluate the spatial variability of banana production, in function of physical and chemical variables of soil and of farm physiographic characteristics, in order to select those with the greatest potential for use in site-specific management program. One hundred thirty productive units of banana clone Williams (Cav...
The fertilization is a work that fulfills the supplementary to the plant nutritional necessities that are not satisfied by the soil, in its condition of natural fertility. For many decades faulty doses has been used that take to low productions, and in occasions excessive doses of chemical fertilizers that lead to environmental problems. The fertil...
Fertilización, nutrientes, Solanum tuberosum, DIACOL Capiro.
Con el objetivo de cuantificar la interacción genotipo-ambiente (IGA) y la estabilidad fenotípica en una
población bovina multirracial del noreste colombiano, se usaron registros de 16 rebaños localizados en tres
regiones agroecológicas del trópico bajo: bosque húmedo subtropical (R1), bosque húmedo tropical (R2)
y bosque seco tropical (R3), entre...
La enfermedad del moko de las musáceas, causada por la bacteria Ralstonia solanacearum, es uno de los problemas fitopatológicos más importantes de la agroindustria del banano en los países tropicales. En Urabá y el Magdalena (Colombia), las principales regiones exportadoras de banano en Colombia, esta enfermedad provoca una destrucción estimada en...
The banana moko disease, caused by the bacterium Ralstonia solanacearum, is one of the most important phytopathological problems of the banana agribusiness in tropical countries. In Uraba and Magdalena (Colombia), the main exporting regions of banana in Colombia, this disease causes a destruction estimated in 16.5 ha/year. The bacterium presents an...
En esta investigación se caracterizó la fertilidad del polen de 46 accesiones de uchuva, con el fin de tomar decisiones para el desarrollo de un programa de mejoramiento mediante la realización de cruzamientos dirigidos. Este estudio se realizó en el Centro de Investigación La Selva (CORPOICA), en el municipio de Rionegro (Antioquia, Colombia). Par...
La virosis del tomate de árbol es una de las enfermedades de mayor importancia económica en las regiones productoras de este frutal en Colombia. Recientemente, se ha determinado que esta enfermedad es causada por un complejo viral, del cual hacen parte entre otros: potyvirus, cucumovirus, alfamovirus y polerovirus.
Algunas de las especies de estos...
One of the most important topics of plant breeders is to evaluate the phenotypic stability through regional trials or multi-environment trials. There are many methods proposed to analyze those trials and to estimate the phenotypic stability. This paper compares the regression method proposed by Eberhart and Russell and the components of variance pr...
The effect of two potential microorganism, mycorhize and pine wood shavings for management of Spongospora subterranea f. sp. subterranea in potato cultivar DIACOL Capiro were evaluated. This research was established at the Agricultural Center of Paysandú (Santa Elena - Medellín) to 2,550 masL, average temperature of 14 ºC and average annual rainfal...
This research was carried out for evaluate the response to fertilization in andic soils of the potato variety DIACOL Capiro. Different levels of Ca (0, 3, 5 y 9 cmolc kg-1), Mg (0, 0.7, 1.4 and 3 cmolc kg-1), B (0, 0,5, 1,0 and 2,0 mg kg-1) and S (0, 10, 20 y 40 mg kg-1) with three levels of NPK, (grade 1:2:2) in 500, 1.500 and 3.000 kg ha-1 dose w...