Scientific article
Nutritional value and thermal degradation of bioactive compounds in wild edible mushrooms
Valor nutricional y degradación térmica de compuestos bioactivos en hongos comestibles silvestres
Karen I. Espejel-Sánchez
Institución: Universidad Autónoma Chapingo, Posgrado en Ciencia y Tecnología Agroalimentaria
País: México
Articles published in this journal
Nutritional value and thermal degradation of bioactive compounds in wild edible mushrooms
Teodoro Espinosa-Solares
E-mail: t.espinosa.s@taurus.chapingo.mx
Institución: Universidad Autónoma Chapingo, Posgrado en Ciencia y Tecnología Agroalimentaria
País: México
Articles published in this journal
Nutritional value and thermal degradation of bioactive compounds in wild edible mushrooms
Influence of microwave drying process on microstructure and thermodynamic properties of nopal cladodes
Performance of two mixing systems on stirred yogurt production
Physical, geometrical and mechanical characterization of huitlacoche (Ustilago maydis (D.C.) Corda)
Comparison of pumpkin seed oil of three species and eight commercial oils by means of a multivariate method
Production test of green house hydropnic huitlacoche (Ustilago maydis Cda.)
The anaerobic digestion model IWA-ADM1: a review of its evolution
IDENTIFICATION OF YEASTS ASSOCIATED WITH HUITLACOCHE
POSTHARVEST CHANGES IN THE EDIBLE MUSHROOM HUITLACOCHE (Ustilago maydis (D.C.) Corda)
Benito Reyes-Trejo
Institución: Universidad Autónoma Chapingo, Laboratorio de Productos Naturales, Departamento de Preparatoria Agrícola
País: México
Articles published in this journal
Nutritional value and thermal degradation of bioactive compounds in wild edible mushrooms
Molecular characterization using ISSR primers of Magnolia mexicana DC. from two regions in Zongolica, Veracruz, Mexico
Guillermina Hernández-Rodríguez
Institución: Universidad Autónoma Chapingo, Ingeniería Agrícola y Uso Integral del Agua
País: México
Articles published in this journal
Nutritional value and thermal degradation of bioactive compounds in wild edible mushrooms
Artisanal alcoholic beverages made with Vitis tiliifolia grape in Mexico
José M. Cunill-Flores
Institución: Universidad Politécnica Metropolitana de Puebla
País: México
Articles published in this journal
Nutritional value and thermal degradation of bioactive compounds in wild edible mushrooms
Diana Guerra-Ramírez
E-mail: dguerrar@chapingo.mx
Institución: Universidad Autónoma Chapingo, Laboratorio de Productos Naturales, Departamento de Preparatoria Agrícola
País: México
Articles published in this journal
Nutritional value and thermal degradation of bioactive compounds in wild edible mushrooms
Influence of microwave drying process on microstructure and thermodynamic properties of nopal cladodes
Artisanal alcoholic beverages made with Vitis tiliifolia grape in Mexico
Physical and chemical attributes of feijoa fruit in Veracruz, Mexico
10.5154/r.rchscfa.2020.12.078
Received: 2020-12-16
Accepted: 2021-05-07
Available online: 2021-06-25
Pages:337-354
Introduction: Nutritional potential of wild edible mushrooms and loss of their nutraceutical properties during cooking have been little examined.
Objective: To evaluate the nutritional content and effect of heat treatment on nutraceutical properties in the wild species Lactarius indigo (Schwein.) Fr. (blue mushroom), Ramaria flava (Schaeff.) Quél. (changle) and Hypomyces lactifluorum (Schwein.) Tul. & C. Tul. (lobster mushroom), collected in temperate pine and oak forests of the Sierra Norte de Puebla.
Materials and methods: The mushrooms were collected in the company of “traditional mushroom collectors”. Proximal composition was quantified according to AOAC methods. The effect of heat treatment was evaluated at 50 and 92 °C at 10 to 60 min intervals. Total phenolic content was determined by the Folin-Ciocalteu method and antioxidant capacity by ABTS and FRAP assays.
Results and discussion: R. flava and L. indigo had the highest percentages of protein (24.02 %) and crude fiber (14.64 %) on dry basis, respectively. R. flava had the highest phenolic content (4.40 mg gallic acid equivalents per gram dry basis) and the highest antioxidant capacity (23.65 µmol trolox equivalents per gram dry basis). Degradation kinetics of the compounds was first order; H. lactifluorum and R. flava had the highest loss of phenols and antioxidants, respectively.
Conclusion: The mushrooms studied showed high nutritional value and retained more than 50 % of their antioxidant properties after thermal processing.
Scientific article
Reactivation of nutrient cycling in an urban tropical dry forest after abandonment of agricultural activities
Reactivación del ciclo de nutrientes en un bosque seco tropical urbano tras el abandono de actividades agrícolas
Juan D. León-Peláez
Institución: Universidad Nacional de Colombia
País: Colombia
Articles published in this journal
Reactivation of nutrient cycling in an urban tropical dry forest after abandonment of agricultural activities
Nutrient suppression effect on growth and development of Ochroma pyramidale (Cav. ex Lam.) Urb. seedlings
William Caicedo-Ruiz
Institución: Universidad Nacional de Colombia, sede Medellín
País: Colombia
Articles published in this journal
Reactivation of nutrient cycling in an urban tropical dry forest after abandonment of agricultural activities
Jeiner Castellanos-Barliza
E-mail: jcastellanos@unimagdalena.edu.co
Institución: Universidad del Magdalena
País: Colombia
Articles published in this journal
Reactivation of nutrient cycling in an urban tropical dry forest after abandonment of agricultural activities
10.5154/r.rchscfa.2020.11.068
Received: 2020-11-17
Accepted: 2021-05-19
Available online: 2021-06-15
Pages:355–365
Introduction: Standing leaf litter represent an essential source of organic matter and nutrients to dynamize biogeochemical processes at the ecosystem level.
Objectives: To characterize the accumulation and decomposition of organic materials and flow of nutrients from standing litter in an urban dry tropical forest in a successional stage, after 10 years of abandonment of agricultural activities, and to determine the potential use of three species in future active restoration activities.
Materials and methods: Standing litter samples were collected from a forest fragment in Santa Marta, Colombia, separating leaves, reproductive material, woody material and other residues. Additionally, leaves of three species of interest for ecological restoration (Albizia niopoides Spruce ex Benth., Cordia alba [Jacq.] Roem. & Schult. and Machaerium milleflorum Dugand G. A.) were separated and Ca, Mg, K, N and P concentrations were determined.
Results and discussion: Total standing litter was 8.3 Mg∙ha-1 with a mean residence time of two years. The leaves represented 20% of the standing litter, with a mean residence time of 1.4 years. Based on the decomposition constant (kj = 0.73) and the rate of leaf litterfall, organic matter returns accounted for 3.4 Mg∙ha-1∙year-1. Leaf decomposition rate decreased in the following order C. alba > M. milleflorum > A. niopoides. P represented the greatest limitation with low release rates (0.1 to 1.2 kg∙ha-1∙year-1).
Conclusions: The passive restoration strategy allowed reactivation of biogeochemical cycle via fine leaf litter. Cordia alba showed potential for inclusion in restoration activities, with lower values for leaf N/P ratio, and higher rates for leaf litterfall, litter decomposition and nutrient release.
Scientific article
Effect of extraction conditions on the concentration of phenolic compounds in Mexican oregano (Lippia graveolens Kunth) residues
Efecto de las condiciones de extracción sobre la concentración de compuestos fenólicos en residuos de orégano mexicano (Lippia graveolens Kunth)
M. Estela Frías-Zepeda
Institución: Instituto Politécnico Nacional, Centro Interdisciplinario para el Desarrollo Integral Regional (CIIDIR) Unidad Durango
País: México
Articles published in this journal
Effect of extraction conditions on the concentration of phenolic compounds in Mexican oregano (Lippia graveolens Kunth) residues
Martha Rosales-Castro
E-mail: mrciidirdgo@yahoo.com
Institución: Instituto Politécnico Nacional, Centro Interdisciplinario para el Desarrollo Integral Regional (CIIDIR) Unidad Durango
País: México
Articles published in this journal
Effect of extraction conditions on the concentration of phenolic compounds in Mexican oregano (Lippia graveolens Kunth) residues
10.5154/r.rchscfa.2020.10.066
Received: 2020-10-30
Accepted: 2021-06-23
Available online: 2021-07-14
Pages:367–381
Introduction: Mexican oregano (Lippia graveolens Kunth) leaves are marketed for use in food and for essential oil extraction. Phenolic compounds with antioxidant properties can be obtained from the residues (leaves without oil and stems) under appropriate extraction conditions.
Objective: To evaluate the effect of extraction solvent and mass/volume ratio on phenolic compounds concentration and their antioxidant capacity in oregano residues.
Materials and methods: Residual leaf (without oil) and stems of oregano were used to obtain extracts with 30, 50 and 80 % aqueous ethanol (ET30, ET50, ET80, respectively) and solvent mass/ volume ratios (1:10, 1:20 and 1:30). Yield in solids, total phenols concentration and flavonoids, and antioxidant capacity were evaluated in the extracts. Similarity analysis between extracts was performed by HPLC-DAD and the main phenols were identified by UPLC-MS.
Results and discussion: Extract yields, phenol concentrations and flavonoids and antioxidant capacity for leaves were higher than for stems. The maximum concentration of phenols was obtained with ET80 and 1:30 ratio, which indicates better dissolution in ethanol than in water. The extracts ET50 and ET80 had chromatographic similarity of phenols in both residues; naringenin, taxifolin, eriodictyol, caffeic acid and luteolin were the major compounds.
Conclusion: Ethanol-water concentrations and mass/solvent ratios are feasible for obtaining flavonoid and non-flavonoid phenolic compounds with antioxidant capacity from oil-free leaves and stems of oregano.
Scientific article
Synergy of Landsat, climate and LiDAR data for aboveground biomass mapping in medium-stature tropical forests of the Yucatan Peninsula, Mexico
Sinergia de datos espectrales Landsat, climáticos y LiDAR para el mapeo de biomasa aérea en selvas medianas de la península de Yucatán, México
Alma D. Ortiz-Reyes
Institución: Centro Nacional de Investigación Disciplinaria en Conservación y Mejoramiento de Ecosistemas Forestales. (CENID-COMEF)
País: México
Articles published in this journal
Synergy of Landsat, climate and LiDAR data for aboveground biomass mapping in medium-stature tropical forests of the Yucatan Peninsula, Mexico
José R. Valdez-Lazalde
E-mail: valdez@colpos.mx
Institución: Colegio de Postgraduados, Postgrado en Ciencias Forestales
País: México
Articles published in this journal
Synergy of Landsat, climate and LiDAR data for aboveground biomass mapping in medium-stature tropical forests of the Yucatan Peninsula, Mexico
DESIGN OF A COMPUTER SYSTEM TO DETERMINE ECOTOURISM SUITABILITY OF FOREST AREAS
METHODS TO DETERMINE ECOTOUHRISM SUITABILITY OF FOREST AREAS
ANALYSIS OF LAND USE CHANGES IN THE WATERSHED OF METZTITLÁN RIVER (MEXICO) USING SATELLITE IMAGERY: 1985-2007
COMPARISON OF SPATIAL METHODS TO DETECT URBAN LAND-USE CHANGE
Gregorio Ángeles-Pérez
E-mail: gangeles@colpos.mx
Institución: Colegio de Postgraduados, Postgrado en Ciencias Forestales
País: México
Articles published in this journal
Synergy of Landsat, climate and LiDAR data for aboveground biomass mapping in medium-stature tropical forests of the Yucatan Peninsula, Mexico
Basal area increment series of dominant trees of Pseudotsuga menziesii (Mirb.) Franco show periodicity according to global climate patterns
DESIGN OF A COMPUTER SYSTEM TO DETERMINE ECOTOURISM SUITABILITY OF FOREST AREAS
ANALYSIS OF LAND USE CHANGES IN THE WATERSHED OF METZTITLÁN RIVER (MEXICO) USING SATELLITE IMAGERY: 1985-2007
SPATIAL STRUCTURE OF Pachycereus weberi (Coult.) Backeb. IN CAÑADA DEL ZOPILOTE, GUERRERO
PATTERNS OF DIVERSITY IN THE NATURAL REGENERATION OF MIXED PINE STANDS
Héctor M. de los Santos-Posadas
Institución: Colegio de Postgraduados, Postgrado en Ciencias Forestales
País: México
Articles published in this journal
Synergy of Landsat, climate and LiDAR data for aboveground biomass mapping in medium-stature tropical forests of the Yucatan Peninsula, Mexico
Height-diameter-age equation systems for Pinus arizonica Engelmann and Pinus durangensis Martinez in mixed-species stands in Durango, Mexico
An approximate height growth and site index model for Quercus sideroxyla Bonpl. in mixed- species stands of Durango, Mexico
Compatible taper, volume, green weight, biomass and carbon concentrationsystem for Quercus sideroxyla Bonpl.
Maximum density and density management diagram for mixed-species forests in Durango, Mexico
SiBiFor: Sistema Biométrico Forestal para el manejo de los bosques de México
DESIGN OF A COMPUTER SYSTEM TO DETERMINE ECOTOURISM SUITABILITY OF FOREST AREAS
Laura Schneider
Institución: Rutgers University, Department of Geography
País: Estados Unidos
Articles published in this journal
Synergy of Landsat, climate and LiDAR data for aboveground biomass mapping in medium-stature tropical forests of the Yucatan Peninsula, Mexico
Carlos Arturo Aguirre-Salado
E-mail: carlos.aguirre@uaslp.mx
Institución: Universidad Autónoma de San Luis Potosí, Facultad de Ingeniería
País: México
Articles published in this journal
Synergy of Landsat, climate and LiDAR data for aboveground biomass mapping in medium-stature tropical forests of the Yucatan Peninsula, Mexico
DEFORESTATION RATES IN SAN LUIS POTOSÍ, MÉXICO (1993-2007)
ANALYSIS OF LAND USE CHANGES IN THE WATERSHED OF METZTITLÁN RIVER (MEXICO) USING SATELLITE IMAGERY: 1985-2007
COMPARISON OF SPATIAL METHODS TO DETECT URBAN LAND-USE CHANGE
AUTOMATED CALCULATION OF THE MAPPING IN THE ELABORATION OF PROGRAMS OF FOREST HANDLING
Alicia Peduzzi
Institución: Woods Hole Research Center
País: Estados Unidos
Articles published in this journal
Synergy of Landsat, climate and LiDAR data for aboveground biomass mapping in medium-stature tropical forests of the Yucatan Peninsula, Mexico
10.5154/r.rchscfa.2020.08.050
Received: 2020-08-14
Accepted: 2021-07-01
Available online: 2021-07-19
Pages:383-400
Introduction: Tropical forests represent complex and dynamic ecosystems that cover extensive areas, hence the importance of determining biomass content and representing spatial variability.
Objective: Estimating and mapping aboveground biomass and its associated uncertainty for medium-stature semi-evergreen (SMSP) and semi-deciduous (SMSC) tropical forests of the Yucatan Peninsula.
Materials and methods: Aboveground biomass was estimated as a function of explanatory variables taken from Landsat images and climatic variables, using the random Forest algorithm. Aboveground biomass was mapped from previous biomass estimates for stripes of the territory with the presence of LiDAR (Light Detection And Ranging) and field data. Uncertainty at the pixel level was estimated as the coefficient of variation.
Results and discussion: A combination of climatic and spectral variables showed acceptable capacity to estimate biomass in the medium-stature semi-evergreen and semi-deciduous tropical forest with an explained variance of 50 % and RMSE (root mean squared error) of 34.2 Mg·ha -1 and 26.2 Mg·ha -1 , respectively, prevailing climate variables. SMSP biomass ranged from 4.0 to 185.7 Mg·ha -1 and SMSC ranged from 11.7 to 117 Mg·ha -1 . The lowest values of uncertainty were recorded for the medium-stature semi-evergreen tropical forest, being higher in areas with lower amounts of aboveground biomass.
Conclusion: Aboveground biomass was estimated and mapped by the combined use of auxiliary variables with an acceptable accuracy, against uncertainty of predictions, which represents an opportunity for future improvement.
Scientific article
Growth potential of Carapa guianensis (Aubl.) in Tumaco, Colombia
Potencial de crecimiento de Carapa guianensis (Aubl.) en Tumaco, Colombia
Pedro P. Bacca-Acosta
E-mail: pbacca@agrosavia.co
Institución: Corporación Colombiana de Investigación Agropecuaria-AGROSAVIA, Centro de Investigación Obonuco
País: Colombia
Articles published in this journal
Growth potential of Carapa guianensis (Aubl.) in Tumaco, Colombia
Jhon J. Zuluaga-Peláez
Institución: Corporación Colombiana de Investigación Agropecuaria-AGROSAVIA, Centro de Investigación Obonuco
País: Colombia
Articles published in this journal
Growth potential of Carapa guianensis (Aubl.) in Tumaco, Colombia
Álvaro A. Castaño-Colorado
Institución: Smurfit Kappa Cartón de Colombia S. A.
País: México
Articles published in this journal
Growth potential of Carapa guianensis (Aubl.) in Tumaco, Colombia
Andrés F. Ardila-Fernández
Institución: Escuela de Biología-Benemérita Universidad Autónoma de Puebla
País: Colombia
Articles published in this journal
Growth potential of Carapa guianensis (Aubl.) in Tumaco, Colombia
10.5154/r.rchscfa.2020.09.062
Received: 2020-09-30
Accepted: 2021-07-09
Available online: 2021-07-29
Pages:401–412
Introduction: Determining growth and yield potential of a forest species is a requirement for management planning. One of the important forest species for the Tumaco region is Carapa guianensis (Aubl.), due to its high timber potential.
Objective: To evaluate the growth potential of the native species C. guianensis (andiroba or tangare) in Tumaco, Colombia.
Materials and methods: Permanent plots were established in which tree measurement variables were recorded for 90 even-aged individuals for 60 months. Mean annual increments were estimated and an allometric equation was fitted to estimate height from the diameter at 1.30 m (DBH).
Results and discussion: At 60 months of age, C. guianensis trees showed survival between 70 and 87 %. Mean annual increase in diameter and height was 2.9 cm∙yr -1 and 2.3 cm∙yr -1 , respectively. By fitting linear and nonlinear models, we determine the following allometric equation . The species showed rapid diameter growth compared to other regions where it can take more than 50 years to reach a minimum usable diameter of 40 cm.
Conclusion: Based on mean annual growth increments, and under the agroecological conditions of the region, C. guianensis is expected to reach maturity at an early age (before 50 years of age).
Scientific article
Factors influencing physical dormancy and its elimination in two legumes
Factores ante los que funciona la latencia física y su eliminación en dos géneros de leguminosas
Everardo Illescas-Gallegos
Institución: Universidad Autónoma Chapingo, División de Ciencias Forestales.
País: México
Articles published in this journal
Factors influencing physical dormancy and its elimination in two legumes
Dante Arturo Rodríguez-Trejo
E-mail: dantearturo@yahoo.com
Institución: Universidad Autónoma Chapingo, División de Ciencias Forestales.
País: México
Articles published in this journal
Factors influencing physical dormancy and its elimination in two legumes
Root growth of Taxodium mucronatum Ten. planted in an urban area
Structure and diversity of tree vegetation in three reliefs on the Oaxaca coast
Probability of mortality by fire damage of young Pinus hartwegii Lindl. trees in the Izta-Popo National Park
Foreword
GENESIS OF FOREST FIRES
FINANCIAL FORECAST FOR AGROFORESTRY SYSTEMS IN El FORTÍN, MUNICIPALITY OF ATZALAN, VERACRUZ.
EFFECT OF SEED SIZE AND TEMPERATURE ON GERMINATION IN Quercus rugosa Née
FROST RESISTANCE IN Pinus hartwegii SUBJECTED TO DIFFERENT POTASSIUM TREATMENTS
NURSE PLANTS IN THE REFORESTATION WITH Pinus hartwegii Lindl.
CARBOHYDRATE CONCENTRATION AND FRESH WEIGHT DURING THE GERMINATION OF Chamaedorea elegans MART. AND FACTORS THAT AFFECT IT
ALTERNATIVES TO IMPROVE SEED GERMINATION IN THREE TROPICAL TREES
BIOMASS INCREMENT AND SURVIVAL OF A Pinus hartwegii PLANTATION ON BURNED AREAS
NATURAL AND ARTIFICIAL SCARIFICATION OF Lupinus bilineatus Benth. Seeds
SOLAR RADIATION AND SURVIVAL IN A VARA DE PERLILLA (Symphoricarpos microphyllus H.B.K.) FOREST PLANTATION
VEGETATIVE PROPAGATION OF THE VARA DE PERLILLA (Symphoricarpos microphyllus H.B.K.)
INITIAL SURVIVAL, GROWTH AND NUTRIENT CONCENTRATION OF Pinus hartwegii PLANTED ON BURNED SITES
EMISSIONS OF CONTAMINANTS DURING THE 2003 FOREST FIRE SEASON IN MEXICO
NOTES ABOUT THE DESIGN OF RESTORATION PLANTATIONS
THE PROFESSIONAL PROFILE OF THE OFFICIAL FIREFIGHTER IN MEXICO
EFFECT OF LIGHT, TEMPERATURE AND SEED SIZE ON GERMINATION OF Nolina parviflora (H.B.K.) Hemsl
EFFECT OF SEEDLING QUALITY, ASPECT AND MICROSITE ON A Quercus rugosa PLANTATION
EFFECT OF FOREST FIRES IN THE REGENERATION OF Pinus oocarpa var. Ochoterenae
EFFECT OF SEEDLING QUALITY ON SURVIVAL AND GROWTH OF Pinus patula IN A BURNED AREA
THE EFFECT OF FIRE ON DIAMETER GROWTH OF Eucalyptus camaldulensis Dehnh
FIRE ECOLOGY IN THE Pinus harwegii Lindl. ECOSYSTEM
Antonio Villanueva-Morales
Institución: Universidad Autónoma Chapingo, División de Ciencias Forestales.
País: México
Articles published in this journal
Factors influencing physical dormancy and its elimination in two legumes
Amparo Borja-de la Rosa
E-mail: aborja@correo.chapingo.mx
Institución: Universidad Autónoma Chapingo, División de Ciencias Forestales.
País: México
Articles published in this journal
Factors influencing physical dormancy and its elimination in two legumes
Radial growth of pine species in stands subject to selection cutting in Santa María Lachixío, Oaxaca, Mexico
Relationship of rootstock xylem anatomy with the initial growth of ‘Tahiti’ lime (Citrus x latifolia Tanaka ex Q. Jiménez)
Model of selection and evaluation for graduate applicants in forest sciences
Econometric estimation of the income elasticity of consumer demand for environmental services
Technological properties of Quercus insignis wood from Huatusco , Veracruz, Mexico
Influence of morphological and environmental factors ondiameter growth of Caesalpinia gaumeri greenm in a tropicaldeciduous forest in Mexico
MORPHOGENIC RESPONSES IN THE in vitro PROPAGATION OF PECAN (Carya illinoinensis [Wangenh] K. Koch)
ECOLOGY, HARVESTING AND COMMERCIALIZATION OF THE ORIGAN (Lippia graveolens H. B. K.) IN MAPIMÍ, DURANGO
WORKABILITY OF Pinus oaxacana Mirov. WOOD FROM A PLANTATION IN THE STATE OF MEXICO
TECHNOLOGICAL PROPERTIES OF ALGARROBO WOOD (Hymenaea oblongifolia Huber.), FROM BAGADO-CHOCO, COLOMBIA
VEGETATION ECOLOGY OF THE CHIHUAHUAN DESERT
HYDROGEN CYANAMIDE INCREASES PISTACHIO (Pistacia vera L.) BUD BREAK IN ARID REGIONS WITH INSUFFICIENT CHILLING
TECHNOLOGICAL CHARACTERIZATION OF THE WOOD OF Juniperus flaccida VAR. POBLANA MARTÍNEZ
SUNLIGHT AVAILABILITY AND NUT PRODUCTION AFTER REMOVING PECAN TREES
INDUCTION OF LATERAL GROWTH IN PECAN TREES (Carya illinoensis K. Koch) BY TIPPING SHOOTS IN SPRING
TECHNICAL PROPERTIES OF SIXTEEN TYPES OF WOODS FROM THE STATE OF TAMAULIPAS, WHICH INFLUENCE ON THE MANUFACTURE OF PARTICLEBOARDS AND FIBERBOARDS
ABSORPTION OF PRESERVATIVE SOLUTIONS OF 9 WOOD SPECIES, BY MEANS OF PROCESSES OF VACUUM-PRESSURE IMPREGNATION AND IMMERSION
CHARACTERISTIC TECHNOLOGICAL OF THE WOOD OF PURPLEHEART (Peltogyne Mexicana Martínez)
COMMERCIAL VOLUME FUNCTIONS AND VOLUME TABLES WITH AND WITHOUT BARK FOR Peltogyne Mexicana MARINEZ, A THREATEN SPECIE FROM GUERRERO ESTATE, MEXICO
SERVICE LIFE OF TWO VARNISHES FOR OUTDOOR USE ON ALDER, PINE AND OAK WOOD UNDER ARTIFICIAL WEATHERING
ACCELERATED TEST OF THE USEFUL LIFE OF EXTERIOR WOOD FINISHING ON OAK AND PINE
TECHNOLOGICAL CHARACTERISTICS OF THE SAC-CHACAH WOOD FROM CAMPECHE IN DIFFERENT TREE’S ZONES
VARIATION IN PHYSICAL PROPERTIES OF Abies religiosa and Pinus ayacahuite var. veitchii WOOD
DISPONIBILIDAD DE LUZ Y PRODUCCION DE NUEZ DESPUES DEL ACLAREO DE ÁRBOLES DE NOGAL PECANERO (Carya illinoensis K. Koch)
Víctor R. Ordóñez-Candelaria
Institución: Instituto de Ecología A. C.
País: México
Articles published in this journal
Factors influencing physical dormancy and its elimination in two legumes
Luis A. Ortega-Aragón
Institución: Universidad Autónoma Chapingo, Laboratorio Nacional de Investigación y Servicio Agroalimentario y Forestal
País: México
Articles published in this journal
Factors influencing physical dormancy and its elimination in two legumes
10.5154/r.rchscfa.2020.06.041
Received: 2020-06-08
Accepted: 2021-07-23
Available online: 2021-08-05
Pages:413–429
Introduction: Prosopis laevigata (Humb. & Bonpl. ex Willd.) M. C. Johnst, P. glandulosa Torr., Vachellia schaffneri (S. Watson) Seigler & Eibinger, V. pennatula (S. Watson) Seigler & Eibinger and V. farnesiana (L.) Wight & Arn. are characteristic species of semi-arid areas. Their seeds show physical dormancy and are naturally scarified by chewing, trampling, digestive tract of fauna, fire, or washing away during rains.
Objective: To describe the morphology of the seed coat of three species of Vachellia and two of Prosopis, and to assess the chemical, mechanical and thermal scarification of seeds.
Materials and methods: Chemical (HCl for 30, 120, 150 and 180 min), thermal (80, 100, 120 and 140 °C for 3 min) and mechanical (sanding) scarification were applied. Resistance to breaking by compression was measured. The experimental design was randomized complete blocks per species.
Results and discussion: Seeds showed a layer of lignified and impermeable macrosclereids, but the aleurone layer could not be detected. Sanding allowed germination from 81.2 to 100 %. Chemical and thermal treatments showed no differences, only in the case of P. laevigata, chemical scarification for 180 min caused higher germination (72.5 %) compared to the control. Vachellia schaffneri seeds were more resistant to compression (669 N) and had more intense dormancy (0.83), while P. glandulosa had the lowest dormancy (0.42).
Conclusions: Mechanical scarification was the best method to eliminate dormancy in Vachellia and Prosopis seeds.
Scientific article
Effects of the growth regulators for the induction of somatic embryos from explants in an endemic and threatened Echinocactus parryi Engelm.
Efectos de reguladores de crecimiento para inducción de embriones somáticos a partir de diferentes explantes de Echinocactus parryi Engelm, una especie endémica y amenazada
Dolores Adilene García-González
Institución: Universidad Autónoma de Ciudad Juárez, Instituto de Ciencias Biomédicas
País: México
Articles published in this journal
Effects of the growth regulators for the induction of somatic embryos from explants in an endemic and threatened Echinocactus parryi Engelm.
María del Socorro Santos-Díaz
Institución: Universidad Autónoma de Ciudad Juárez, Facultad de Ciencias Químicas
País: México
Articles published in this journal
Effects of the growth regulators for the induction of somatic embryos from explants in an endemic and threatened Echinocactus parryi Engelm.
Juan Pedro Flores-Margez
Institución: Universidad Autónoma de Ciudad Juárez, Instituto de Ciencias Biomédicas
País: México
Articles published in this journal
Effects of the growth regulators for the induction of somatic embryos from explants in an endemic and threatened Echinocactus parryi Engelm.
Pedro Osuna-Ávila
E-mail: posuna@uacj.mx
Institución: Universidad Autónoma de Ciudad Juárez, Instituto de Ciencias Biomédicas
País: México
Articles published in this journal
Effects of the growth regulators for the induction of somatic embryos from explants in an endemic and threatened Echinocactus parryi Engelm.
10.5154/r.rchscfa.2020.08.053
Received: 2020-08-26
Accepted: 2021-08-15
Available online: 2021-08-19
Pages:431–447
Introduction: The list of threatened species is enhancing and needs to be revised by integrating plant tissue culture tools with conventional techniques that support the appropriate management of these species.
Objective: To assess the effects of the growth regulators for the induction of somatic embryos from mature seeds, shoots, and compact green callus of Echinocactus parryi Engelm. and the histological analysis of the embryogenic structures.
Materials and methods: A completely randomized design was utilized to evaluate three types of explants (apical, medium, and basal) cultured on basal Murashige & Skoog media (MS) with different growth regulators concentrations (2, 4-D [dichlorophenoxy acetic acid], BAP [6-benzylaminopurine] and kinetin, at four levels: 0.5, 1, 1.5, and 2 mg∙L -1 ). Histological analysis of the embryogenic structures was performed.
Results and discussion: The 2, 4-D induced both embryogenic and organogenic callus from seeds and shoot explants. The globular stage did not evolve to their maturity, presumably because of 2, 4-D accumulation. The compact callus explants were the more efficient to induce 19.2 somatic embryos per explant when they were cultured in the medium with 0.5 mg∙L -1 kinetin. However, the latest phases did not germinate, probably due to abnormalities generated by genetic and epigenetic changes in the DNA that can cause abnormal somatic embryos. The histology image demonstrated that the globular and torpedo structures were visible under a microscope showing stained nucleus and numerous starch grains.
Conclusions: E. parryi is a species that can produce a high number of embryogenic structures, which represents a great potential to grow massive plants.
Scientific article
Evaluating Aspergillus terreus tolerance to toxic metals
Evaluación de la tolerancia de Aspergillus terreus a metales tóxicos
Ana G. Villalba-Villalba
E-mail: anagloria.villalba@unison.mx; villalba13@gmail.com
Institución: Universidad de Sonora, Departamento de Física
País: México
Articles published in this journal
Evaluating Aspergillus terreus tolerance to toxic metals
Aspergillus niger Tiegh., isolated in Sonora, Mexico: metal tolerance evaluation
Blanca González-Méndez
Institución: Universidad Nacional Autónoma de México, Estación Regional del Noroeste del Instituto de Geología
País: México
Articles published in this journal
Evaluating Aspergillus terreus tolerance to toxic metals
10.5154/r.rchscfa.2020.07.047
Received: 2020-07-27
Accepted: 2021-08-02
Available online: 2021-08-11
Pages:449–464
Introduction: Metal pollution is one of the major environmental problems. Some metals are toxic at very low concentrations, bioaccumulate and do not decompose to non-toxic forms.
Objective: To isolate a strain of microscopic fungus in a site contaminated with toxic metals and to evaluate the tolerance to these substances.
Materials and methods: Fungi were isolated from the soil of an abandoned lead mine. Tolerance index of fungi to cadmium, mercury and lead was evaluated individually at concentrations of 50, 100, 250, 350 and 500 ppm; in addition, a multimetal system (mixture) with cadmium, chromium, mercury and lead was evaluated at 4, 8, 16, 64, 80, 120, 200 and 400 ppm. The minimum inhibitory concentration (MIC) was also determined.
Results and discussion: The isolated fungi were identified as Aspergillus terreus, which showed high tolerance indices for lead (0.9) at all concentrations tested and indices of 0.8 at most mercury concentrations. Cadmium was the most toxic metal; tolerance indices of 0.56 and 0.2 were observed at 50 ppm and 100 ppm, respectively. High tolerance indices (0.9) were observed in the multimetal system up to 64 ppm. MIC was greater than 500 ppm with lead and mercury, less than 250 ppm with cadmium and greater than 400 ppm with the multimetal system.
Conclusion: A. terreus showed high tolerance to lead at all concentrations tested. The level of tolerance is influenced by the type of metal.
Scientific article
Nutrient suppression effect on growth and development of Ochroma pyramidale (Cav. ex Lam.) Urb. seedlings
Efecto de la supresión de nutrientes sobre el crecimiento y desarrollo de plántulas de Ochroma pyramidale (Cav. ex Lam.) Urb.
M. Isabel Higuita-Aguirre
E-mail: mihiguitaa@unal.edu.co
Institución: Universidad Nacional de Colombia, Departamento de Ciencias Forestales, Grupo de Investigación en Restauración Ecológica de Tierras Degradadas en el Trópico
País: Colombia
Articles published in this journal
Nutrient suppression effect on growth and development of Ochroma pyramidale (Cav. ex Lam.) Urb. seedlings
Juan D. León-Peláez
Institución: Universidad Nacional de Colombia, Departamento de Ciencias Forestales, Grupo de Investigación en Restauración Ecológica de Tierras Degradadas en el Trópico
País: Colombia
Articles published in this journal
Reactivation of nutrient cycling in an urban tropical dry forest after abandonment of agricultural activities
Nutrient suppression effect on growth and development of Ochroma pyramidale (Cav. ex Lam.) Urb. seedlings
Nelson W. Osorio-Vega
Institución: Universidad Nacional de Colombia, Escuela de Biociencias, Grupo de Investigación en Microbiología del Suelo
País: Colombia
Articles published in this journal
Nutrient suppression effect on growth and development of Ochroma pyramidale (Cav. ex Lam.) Urb. seedlings
10.5154/r.rchscfa.2020.12.073
Received: 2020-12-02
Accepted: 2021-08-06
Available online: 2021-08-18
Pages:465–480
Introduction: Ochroma pyramidale (Cav. ex Lam.) Urb. is a species with high potential for use in commercial reforestation. Knowledge of nutrient requirements in nursery increases the chances of success in the field by generating plants with adequate morphological and physiological characteristics.
Objective: To identify the key nutrients for O. pyramidale growth in nursery and to characterize the associated visual symptoms of deficiency.
Materials and methods: The design was completely randomized with 10 treatments: one treatment without fertilization, one treatment with complete fertilization (CF), and eight resulting from the CF treatment with suppression of N, P, K, Ca, Mg, S, B and cationic microelements (Mn, Fe, Cu and Zn). The effect of each treatment was determined by height, root collar diameter, aboveground dry biomass, root dry biomass, leaf area and relative growth rate. An analysis of variance and separation of means was performed using the Tukey's test (P < 0.05).
Results and discussion: Nutrient suppression had significant effects (P < 0.05) on growth after six months in nursery. P was the most limiting element, followed by N. The other treatments showed no significant differences compared to the FC treatment. N suppression caused yellowing, and lack of P caused necrosis with subsequent death and detachment in leaves. B suppression showed no clear deficiency symptoms.
Conclusion: O. pyramidale showed high nutrient uptake efficiency. Only N and P strongly limited its development, which represent the key nutrients for the species.
Scientific article
Morphological, physical and chemical analysis of acorns from three oak species from Durango, Mexico
Caracterización morfológica, física y química de bellotas de tres especies de encino del estado de Durango, México
Raymundo F. Ramírez-Roacho
Institución: Universidad Juárez del Estado de Durango, Maestría Institucional en Ciencias Agropecuarias y Forestales
País: México
Articles published in this journal
Morphological, physical and chemical analysis of acorns from three oak species from Durango, Mexico
Maribel Guerrero-Cervantes
Institución: Universidad Juárez del Estado de Durango, Facultad de Medicina Veterinaria y Zootecnia
País: México
Articles published in this journal
Morphological, physical and chemical analysis of acorns from three oak species from Durango, Mexico
POLYETHYLENE GLYCOL INFLUENCE ON in vitro GAS PRODUCTION PARAMETERS IN FOUR NATIVE FORAGES CONSUMED BY WHITE-TAILED DEER
José A. Prieto-Ruíz
E-mail: jprieto@ujed.mx
Institución: Universidad Juárez del Estado de Durango, Facultad de Ciencias Forestales
País: México
Articles published in this journal
Morphological, physical and chemical analysis of acorns from three oak species from Durango, Mexico
Mycorrhiza and fertilization: effect on the production of Pinus engelmannii Carr. in nursery
Growth and survival of a plantation of Pinus greggii Engelm. ex Parl. var. greggii under different fertilization treatments
Growth of mesquite in the nursery under different substrate, irrigation and moisture retainer conditions
Preconditioning Pinus engelmannii carr. seedlings by irrigation deficit in nursery
INFLUENCE OF SOME FACTORS ON THE SEEDLING PRODUCTION OF Pinus cooperi BLANCO UNDER NURSERY CONDITIONS
Melissa Bocanegra-Salazar
Institución: Universidad Juárez del Estado de Durango, Facultad de Ciencias Forestales
País: México
Articles published in this journal
Morphological, physical and chemical analysis of acorns from three oak species from Durango, Mexico
Alternative uses of sawmill industry waste
Jorge A. Chavez-Simental
Institución: Universidad Juárez del Estado de Durango, Instituto de Silvicultura e Industria de la Madera
País: México
Articles published in this journal
Morphological, physical and chemical analysis of acorns from three oak species from Durango, Mexico
Mycorrhiza and fertilization: effect on the production of Pinus engelmannii Carr. in nursery
Alternative uses of sawmill industry waste
TECHNIQUES FOR CUANTIFYING ANATOMIC DUCTS IN DECIDUOUS FRUIT TREES Study case Pecans tree (Carya illinoensis koch)
José R. Goche-Télles
E-mail: jgoche@ujed.mx; rodolfog@reduaeh.uaeh.mx
Institución: Universidad Juárez del Estado de Durango, Facultad de Ciencias Forestales
País: México
Articles published in this journal
Morphological, physical and chemical analysis of acorns from three oak species from Durango, Mexico
Alternative uses of sawmill industry waste
VARIATION IN PHYSICAL PROPERTIES OF Abies religiosa and Pinus ayacahuite var. veitchii WOOD
10.5154/r.rchscfa.2020.10.064
Received: 2020-10-24
Accepted: 2021-08-12
Available online: 2021-08-19
Pages:481–495
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Electronic ISSN: 2007-4018
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