Edmundo García Moya

• Ingeniero Agonomo, MS, PhD
• Professor Emeritus at Colegio de Postgraduados, Campus Montecillo.

The intra- and inter-population variation in cones and seeds of Pinus cembroides and Pinus johannis from central Mexico were analyzed because of the expected effects caused by the wide variation in the latitudinal gradient of the distribution of P. cembroides and P. johannis. The objectives of this study are to identify cone and seed variation in t...

The anatomy of the neck cells and the structure of the archegonium during the central cell growth as a stage in the ontogeny of the archegonium that occurs before fertilization is described and compared for Ceratozamia tenuis and Zamia furfuracea. Two neck cells are reported for both species with anatomical features that suggest they participate in...

The species of the Agave genus, endemic to the American continent, are ecologically important due to its soil retention capacity, its adaptation to xerophytic conditions, its association with some animals like mammals and birds, its association with other plants, and the uses humans have been giving them, principally. The objectives of this study a...

The utilization of a novel (systemic) biofertilizer containing Pseudomonas fluorescens, Azospirillum brasilense, and Bacillus subtilis and possessing the technology to facilitate the entry of bacteria through the stomata, was evaluated at three localities in Mexico (Potrero Nuevo, Veracruz; Ameca, Jalisco; and Champotón, Campeche) in two sugarcane...

Los patrones de la estructura de la vegetación (PEV) son afectados por la interacción dinámica entre los elementos sociales y ecológicos. El objetivo fue describir los patrones de la estructura y diversidad de la selva mediana subperennifolia después del aprovechamiento forestal maderable en Noh Bec, Quintana Roo, México. Se llevó a cabo un muestre...

The genus Agave includes species of economic and cultural importance for Mexico. In the state of Veracruz there are different opinions about the Agave taxa reported for the state. This fact causes disparity in the information available on the species richness of this genus. The objectives of this research were: to identify the species of Agave pres...

Las luciérnagas (Coleoptera: Lampyridae) tienen importancia turístico-cultural debido a su bioluminiscencia. En el “Santuario de las Luciérnagas” (Nanacamilpa, Tlaxcala) habitan poblaciones de Photinus palaciosi. Anualmente, este sitio es visitado por una gran cantidad de turistas. Sin embargo, faltan estudios ecológicos sobre la biología de la esp...

The anatomy of the neck cells and the structure of the archegonium during the central cell growth as a stage in the ontogeny of the archegonium that occurs before fertilization is described and compared for Ceratozamia tenuis and Zamia furfuracea. Two neck cells are reported for both species with anatomical features that suggest they participate in...

Agriculture and extensive cattle ranching have been leading causes of deforestation in the rainforests of the Mexican tropics. In the municipality of Jesús Carranza, Veracruz, extensive cattle ranching became the primary activity and income source about 50 years ago, subsequent to forest clearing for agriculture 20 years earlier. However, remnant a...

Quelites (edible tender leaves, stems, and flowers) are important components of the Mesoamerican food system, but, according to the literature, their use has been declining. Sociodemographic factors that influence their consumption are not well-known. We studied these factors in relation to species of quelites and commercial vegetables used, source...

Associated grass-legume pastures have advantages over grass monoculture; in order to evaluate them the association of black oat (Avena strigosa Schreb) with winter vetch (Vicia villosa Roth) was analysed. The objective of the study was to evaluate forage yield, the botanical, morphological, and chemical composition of black oat in monoculture and i...

The anatomy of the megagametophyte of Zamia furfuracea, a cycad species with a short reproductive cycle, is described in the first stages of its ontogeny corresponding to the free nuclear and alveolation stages. The way in which the free nuclei are arranged centripetally to later organize themselves into a series of radially elongated hexahedral an...

Harvesting frequency and intensity are management criteria in forage plants and their choices affect herbage yield and quality. The objectives of the study were to evaluate herbage yields of morphological components and chemical composition (crude protein, neutral detergent fiber and acid detergent fiber) of Saia oats (Avena strigosa Schreb) at thr...

Litsea glaucescens Kunth (Mexican bay leaf, laurel) has a wide distribution in Mexico, growing at both riparian and rupicolous environments in the mountainous region of the Central Highlands of the country. Sierra Fría-Sierra Laurel is a protected natural area covered by a dry forest. The Mexican bay leaf is associated with the oak forest, especial...

Plant growth promoting bacteria are natural inhabitants of the soil and the interior of plant tissues and are capable of promoting the growth and productivity of crops. When these bacteria can be isolated and multiplied in the laboratory, they have a high potential to be commercialized and used to improve the yield and health of crops. In this stud...

Las tendencias actuales de practicar la agricultura apuntan hacia el uso de microorganismos para incidir en la sanidad, producción y calidad de las cosechas; estudios previos en agave han logrado el aislamiento de diferentes microorganismos, pero la identificación de bacterias endófitas es un área que se ha abordado poco a pesar de su importancia e...

Existen pocos estudios acerca de métodos para evaluar la viabilidad y germinación de semillas de cactáceas, información necesaria para planear su conservación y preservación en su hábitat o sobrevivencia por periodos largos en condiciones ambientales desfavorables o de almacenamiento. En el presente trabajo se exploró la viabilidad de las semillas...

Introduction: The Humid Mountain Forest (HMF) has the highest number of plants per unit of surface, whose vegetation grows under heterogeneous environmental conditions and possess a high floristic variation. HMF conservation is important due to the biodiversity it harbors and the environmental services it provides. Objective: This work evaluated t...

El análisis de la estructura y flora de las comunidades vegetales permite conocer las interrelaciones de la comunidad con su entorno. En Puebla, México, existen comunidades vegetales compuestas de pino e izotal, por lo que surge la pregunta ¿Cuál es la similitud o diferencia florística entre ambos tipos de vegetación que se encuentran en áreas cerc...

La reproducción por semilla promueve la diversidad genética en el maguey (Agave salmiana), si la fertilización es la adecuada, podría incrementarse el crecimiento. En el maguey pulquero es una práctica poco común que es necesario estudiar, por lo cual los objetivos de esta investigación fueron: 1) evaluar el efecto del abono y la fertilización en e...

In the Mexican Altiplano, beans and corn are the main crops. Conditions favoring hail -- high daily minimum temperature and high rainfall intensity -- are expected to increase under climate change scenarios. If soil humidity remains suitable for plant growth until October, an adaptive strategy to reduce hail and frost damage consist in delaying sow...

Se documenta la estructura poblacional y el patrón de distribución y correlación espacial entre etapas de desarrollo de Hintonia latiflora, especie amenazada en México por la cosecha comercial de su corteza. Se establecieron seis unidades de muestreo (tres cosechadas y tres no cosechadas) de 20 m × 100 m para el censo de todas las plantas y se cate...

Borehole (B187) near San Juan de la Costa, Baja California Sur, was collected. The strata of this borehole consists of the El Cien Formation. Dating by U-Pb method in Zircons indicated that the sediments were deposited 27.5 million years ago (upper Oligocene). The B187 paleopalynological research shows that in these strata, palynomorphs of both con...

Bioengineering is a technical option which uses selected biological elements to retain soil and rehabilitate areas with gullies. With this aim, bioengineering practices were implemented to recover areas affected by gully erosion in a micro-watershed located in the Mixteca, an important region in the Mexican state of Oaxaca. The restoration plan was...

Timber harvesting may lead to changes in the dasonomic and ecological attributes of tree vegetation, affecting the productivity and biodiversity of ecosystems. Although, little is known about the effect of this practice on the tropical forests of Mexico. The aim was to compare the structure and diversity in forest ejidos under timber harvesting in...

In Mexico, the foraging-stock load in pastures is not regulated according to stocking rates, which are estimated in terms of coverage and productivity; this situation has led to the degradation of the vegetation coverage, the reduction of infiltration and water storage capacity in the soil, and the increase of surface runoffs and erosion, which aff...

Timber harvesting may lead to changes in the dasonomic and ecological attributes of tree vegetation, affecting the productivity and biodiversity of ecosystems. Although, little is known about the effect of this practice on the tropical forests of Mexico. The aim was to compare the structure and diversity in forest ejidos under timber harvesting in...

Re-vegetation plays a fundamental role for erosion control and plant recovery in lands affected by gully erosion. Bioengineered practices facilitate the gullies rehabilitation. Objectives of the research were: 1) Identify taxonomically the pioneer vegetation on each gully section; 2) Characterize vegetation distribution preferences and 3) Assess st...

This research integrates Traditional and Formal Ecological Knowledge (TEK / FEK) of a Tropical Dry Forest in central Mexico, in order to assess harvesting and conservation of the non-timber forest species. We were interested in: knowing the structure and diversity of the forest community; identifying which are the tree resources of common interest...

Antecedentes y Objetivos: La germinación precoz (vivípara) de semillas en frutos de Stenocereus thurberi se ha correlacionado con mayor velocidad de germinación de las semillas remanentes. Esta investigación compara la germinación de cinco poblaciones de Sinaloa, México, para determinar: 1) si existe un patrón asociado con la germinación precoz de...

The man-maguey relationship in Mesoamerica, and the use of the plant for pulque production goes back 10 000 years ago and three thousand years respectively. This agro-industry that flourished in the last third of the nineteenth century is at risk even its traditional use and others more profitable uses such as the production of inulin and fructose...

Examination of the effects of altered precipitation and atmospheric temperature patterns on ecosystem processes are an active area of research. Influences of these climate factors may change when plant cover and species composition are disturbed as a consequence of land use change altering ecosystem processes, such as soil respiration. We addressed...

Introducción: La influencia del relieve es importante en la distribución espacial y heterogeneidad de la vegetación arbórea en las selvas. Objetivo: La estructura y diversidad arbórea se analizaron en tres relieves de la costa de Oaxaca: planicie, premontaña y montaña baja. Materiales y métodos: En cada relieve, con tres unidades de muestreo de 1,0...

This investigation documented the effect of methods of physical and chemical scarification in seeds of Guaiacum coulteri, a species of tropical deciduous forest from Sinaloa protected by national and international laws, in order to contribute to the germinative knowledge of the species. For this, six pregerminative treatments were evaluated on the...

Architectural and morphological variation of Hintonia latiflora (Rubiaceae) in relation to bark harvest and environmental factors. Hintonia latiflora is a rare ecologically and economically important species from the Tropical Deciduous Forest of the Balsas Basin, Mexico, whose bark is traded as medicinal. Debarking practices have modified the shape...

Introduction: Relief has a significant influence on the spatial distribution and heterogeneity of arboreal vegetation in tropical forests. Objective: Tree structure and diversity were analyzed in three reliefs on the Oaxaca coast: plain, premountain and low mountain. Materials and methods: Three 1,000 m² randomly selected sampling units were esta...

Hintonia latiflora is a rare ecologically and economically important species from the Tropical Deciduous Forest of the Balsas Basin, Mexico, whose bark is traded as medicinal. Debarking practices have modified the shape of plants, their architecture and morphometry; but it is unknown if some topographic and edaphic factors may also influence in the...

The ecological relationships of "pitayo" and "cardón" were studied in the Sayula, Jalisco Basin. A multivariate approach was used considering three sets of explanatory variables: geographical (FG), edaphic (E) and biotic (B). Three columnar cacti species Stenocereus queretaroensis, and S. dumortieri and Pachycereus grandis were found. According to...

It has been said for a long time that mesquite reduces significantly cover and productivity of herbaceous vegetation in the range lands. Likewise there are evidences showing the opposite. This controversy make us think that this interaction is not fully understood. This work evaluated the effect of mesquite on the herbaceous vegetation along a grad...

This research deals with the taxonomy, geographical and ecological distribution, and the forms of utilization and available empirical knowledge of Agave spp., subgenus Agave, in San Luis Potosí and Zacatecas. The following taxa were found: wild species: Agave salmiana ssp. crassispina, A. scabra ssp. potosiensis, A. parrasana; semicultivated specie...

The profitability of apiculture and the health of bee populations depend on landscapes rich in nectariferous and polleniferous flowers. Therefore it is clear that knowledge on local bee flora constitutes the basic information necessary to determine the apiculture potential of a region. Nevertheless, there is no research to date showing the floral s...

La acumulación y distribución de biomasa hacia los componentes estructurales de los árboles es determinante en bosques manejados, tanto en términos de productividad maderable como en la reactivación de diversos procesos ecosistémicos. En el presente estudio se analizó el patrón de acumulación de biomasa aérea total (BAT) y su asignación hacia fuste...

Traditional fruit homegardens are units of production of high richness of species with value in use. The objective was to analyze the relationship between the arboreal structure of 30 homegardens of Coatetelco, Morelos and the value in use of the species. The structure was quantified through the Importance Value Index (IVI). The Cultural Value Inde...

In La Purísima region, Comondú, Baja California Sur, the borehole B4 was extracted from the San Gregorio formation (upper Oligocene-lower Miocene). It contains continental and marine palynomorphs. The aim of this study was to examine the borehole palinomorphs and analyze their richness and a diversity. We propose the vegetation types in which these...

Se tomaron datos de cobertura vegetal de 29 especies perennes y 25 variables del medio en 57 sitios, para investigar la relación vegetación-ambiente en 16 islas de la costa de Sinaloa, México. Los sitios de vegetación se clasificaron con el análisis de conglomerados y se ordenaron con el análisis de correspondencia linearizado (ACL), luego se inter...

In this work, we present an ultrastructural and physiological description of a novel chlorophyll-deficient, yellow cell line of the grass Bouteloua gracilis that develops etioplast-like plastids in presence of light (YELP). These mutant cells were compared to the parental, wild-type, highly chlo-rophyllous cells from which they were isolated. Growt...

Aboveground biomass accumulation and allocation to the structural components of trees is crucial in managed forests, both in terms of timber productivity and the reactivation of different ecosystem processes. In this study, we analyzed the pattern of accumulation of aboveground total biomass and its allocation among stems, branches, bark and foliag...

The Coues deer (Odocoileus virginianus couesi) is one of the 14 subspecies of white-tailed deer in Mexico and its distribution area encompasses 30.4 % of the Mexican Republic and it has a high cinegetic value. A research was carried out in Sierra del Laurel, in the municipality of Calvillo, Aguascalientes, Mexico, on the density of the white-tailed...

In Mexico, the frosts matching with the blooming and fruit set of peach plants [Prunus persica (L.) Batsch] affect their productivity; nevertheless the use of early cultivars grafted on late ones (bi-cultivar composition) can reduce the frost damages on flowers and fruits, unlike early uni-cultivar trees alternated with late cultivars. Because of t...

In Mexico, the frosts matching with the blooming and fruit set of peach plants [Prunus persica (L.) Batsch] affect their productivity; nevertheless the use of early cultivars grafted on late ones (bi-cultivar composition) can reduce the frost damages on flowers and fruits, unlike early uni-cultivar trees alternated with late cultivars. Because of t...

Hintonia latiflora (Sessé & Moc. ex DC.) Bullock, la “quina amarilla”, es un árbol americano propio del bosque tropical caducifolio, valioso, debido a que la corteza tiene propiedades medicinales. La principal zona de abasto comercial de quina amarilla está al norte del estado de Guerrero, México. Esta contribución aporta información bibliográfica...

The strategy of germination is central to ensure survivorship of natural populations. Storage and viability of seeds are also important features in regeneration and cropping. Both aspects of viviparous arborescent cacti of Sonoran Desert are lacking. This research focused on the germination of Stenocereus thurberi in viviparous and non-viviparous p...

The strategy of germination is central to ensure survivorship of natural populations. Storage and viability of seeds are also important features in regeneration and cropping. Both aspects of viviparous arborescent cacti of Sonoran Desert are lacking. This research focused on the germination of Stenocereus thurberi in viviparous and non-viviparous p...

Hintonia latiflora (Sessé & Moc. ex DC.) Bullock, the "quina amarilla", is an American tree of the tropical deciduous forest which is valuable because its bark has medicinal properties. The main area supplying the commercial quina amarilla is the northern of Guerrero state, Mexico. This contribution reports bibliographic information pertaining to t...

En el edificio que ocupa el Museo Nacional de las Culturas(MNC), del centro histórico de la ciudad de México, se llevaron a cabo excavaciones arqueológicas de las que se derivó esta investigación que tuvo como objetivo recuperar los restos arquebotánicos contenidos en los depósitos sedimentológicos de dichas excavaciones, con la finalidad de establ...

Resumen: En México, las heladas que coinciden con la floración y el amarre del fruto del duraznero [Prunus persica (L.) Batsch] afectan su productividad y el uso de cultivares precoces injer-tados sobre cultivares tardíos (composición bicultivar) puede atemperar el daño por heladas en flores y frutos a diferencia de árboles unicultivares precoces a...

: La estrategia de germinación es fundamental para asegurar la supervivencia de las poblaciones naturales; mientras que el almacenamiento y la viabilidad de las semillas son importantes en programas de repoblación y cultivo. Ambos aspectos están poco estudiados en cactáceas arborescentes vivíparas del Desierto Sonorense. Esta investigación evaluó l...

There are 5000 to 7000 species of plants in Mexico that are domesticated or in some previous stage of ecoluition.One example is the "capulin" Prunus serotina Ehrh ssp. capuli (Cav.) Mc Vaugh (wild black cherry, mountain black cherry or rum cherry).The capulin has been classified as domesticated, but there are not studieson the mechanisms of selecti...

There are 5000 to 7000 species of plants in Mexico that are domesticated or in some previous stage of evolution. One example is the "capulín" Prunus serotina Ehrh ssp. capuli (Cav.) Mc Vaugh (wild black cherry, mountain black cherry or rum cherry). The capulín has been classified as domesticated, but there are no studies on the mechanisms of select...

Archeological excavations were carried out in the building that houses the National Museum of Cultures (Museo Nacional de las Culturas, MNC), which is located in the historical center of Mexico City. The present research derives from these archeological works, whose objective was the recovery of archaeobotanical remains contained in the sediment de...

From the San Gregorio Formation (Upper Oligocene-Lower Miocene), Baja California Sur, Mexico, 105.4 meter-deep borehole “B4” was analyzed. Among the continental palynomorphs, four Tubulifloridites taxa, whose botanic affinity is Asteraceae family (Astereae, Eupatorieae and Heliantheae tribes), were recovered and described. The four Tubulifloridites...

Two dimensional electrophoresis (2-DE) remains as the principal technology for resolving complex protein mixtures, prior to mass spectrometry characterization. Protein extraction and solubilization are the most important steps for revealing a proteome by 2-DE. For any kind of tissue, urea/thiourea-based protein solubilization buffers in combination...

21 fichas biográficas de investigadores nacionales que representan (junto con otros 74 publicados en los 5 volúmenes anteriores) la memoria agronómica del siglo XX.

Con la eficaz intermediación de Edmundo García Moya, en-vié este cuestionario al Dr. Jorge Galo Medina Torres, quien lo respondió sin una demora excesiva. Galo, como le llama-mos sus amigos, es un egresado muy prominente de la Nar-ro, y ha sido Rector de la misma. He colaborado con él en circunstancias diversas, y hemos mantenido una amistad muy co...

Caesalpinia gaumeri Greenm is an important timber species in tropical deciduous forest in southeast Mexico.The trunks of this species are used as posts in rural contruction.In this study we investigated which morphological and environmental factors influence annual diameter growth, in order to establish the best turn over period. Diameter growth in...

El escrito muestra evidencias del uso de Azospirillum spp. en la producción de grano de maíz, sorgo y trigo en México. Los ensayos en campo se desarrollaron en dos sitios geográfica y tecnológicamente distintos con semillas inoculadas y sembradas con cepas de A. lipoferum o A. brasilense. Los resultados permiten apreciar una respuesta benéfica de l...

RESUMEN Aprovechamiento múltiple y rendimiento sostenible han marcado la pauta en la gestión de los recursos naturales, en lo general y de los agostaderos en particular. Las modificaciones a la legislación agraria, resultado de la reforma energética privilegia las actividades minero/petroleras sobre los aprovechamientos sustantivos y adjetivos que...

El conocimiento de los patrones de distribución de especies en las comunidades vegetales y su relación con factores del medio es un objetivo fundamental en ecología. Las comunidades de Pinus cembroides y P. johannis coexisten en diversas regiones de México, pero P. cembroides tiende a distribuirse en laderas de exposiciones sur y suroeste en sitios...

In plant communities, the species distribution patterns and their relationships with environmental factors are of central importance in ecology. In San Luis Potosí of Mexico, woodlands of Pinus cembroides and P. johannis are sympatric, but P. cembroides tends to be located in South and Southwest slopes, in more disturbed sites; unlike, P. johannis,...

Hyparrhenia cymbaria (boat thatching grass, ipopo grass) and Hyparrhenia variabilis (no common name), robust African savanna grasses with complex taxonomies, have not yet been reported for the Americas. Large populations were found in central Jalisco, northeastern Michoaca ́n, and Morelos, Mexico. The species grow in maize and sorghum fields as wel...

RESUMEN El escrito muestra evidencias del uso de Azospirillum spp. en la producción de grano de maíz, sorgo y trigo en México. Los ensayos en campo se desarrollaron en dos sitios geográfica y tecnológicamente distintos con semillas inoculadas y sembradas con cepas de A. lipoferum o A. brasilense. Los resultados permiten apreciar una respuesta benéf...

This manuscript argues about the Azospirillum spp. biofertilization profit, through grain yield of corn, sorghum and wheat tilled in Mexico. The assays were development in two different places. The seeds were inoculated with A. lipoferum or A. brasilense strains and later sowed. The results demonstrated a beneficial response to inoculation only for...

La Reserva de la Biósfera del Valle de Tehuacán-Cuicatlán es una provincia de gran riqueza etnoflorística en la que resalta el género Agave por su diversidad específica y los múltiples recursos que ofrece a los lugareños. Agave kerchovei Lem. es una especie de interés particular por el aprovechamiento de la estructura floral. El objetivo de este es...

Se estudió el proceso germinativo de tres especies de Cephalocereus (C. apicicephalium, C. nizandensis, C. totolapensis) endémicas del Itsmo de Tehuantepec, Oaxaca, México, bajo las hipótesis de que las semillas perderán la capacidad germinativa a medida que pasen los días después de la recolección y que la germinación es diferente entre especies,...

The Tehuacán-Cuicatlán Biosphere Reserve is a province of great richness etno-floristic which highlights the genus Agave for its specific diversity and multiple resources offered to residents. Agave kerchovei Lem. is a species of particular interest in the use of floral structure. The aim of this study was to obtain information about the traditiona...

A comparative analysis of the biology of the mexican pinyon pines Pinus cembroides Zucc. and Pinus Johannis M.-F. Robert in the Mexican Plateau is carried out. Similarities and differences in geographical and ecological distribution as a result of moisture limitations, mating systems, biotic interactions and chemistry of the oleoresins are emphasiz...

This study attempts to test whether local selection of species, whose conservation is considered a priority at the community level, has the potential of contributing to public health care showing vegetal species valuable in traditional medicine. This work was carried out in Temimilcingo, a community immersed in the deciduous forest in the Sierra de...

We studied the germination process of three species of Cephalocereus (C. apicicephalium, C. nizandensis, C. totolapensis) endemic to the Isthmus of Tehuantepec, Oaxaca, Mexico under the hypotheses that seeds lose their germination capacity as the days go after harvesting and the germination is different between species but not between collecting si...

Se evaluó el efecto de un régimen simulado de lluvia sobre el crecimiento y establecimiento de plántulas de los pastos navajita azul (Bouteloua gracilis) y boer (Eragrostis curvula var. conferta) bajo condiciones de invernadero. Un grupo de plántulas se mantuvo bajo condiciones de humedad adecuada mediante riegos a capacidad de campo, mientras que...

Resumen Para probar la hipótesis de que los piñoneros mexicanos (Pinus cembroides) y los piñoneros Johannis (P. johannis) crecen bajo diferentes condiciones ambientales, se muestreó la flora asociada a ambas especies a lo largo de dos transectos perpendiculares de 20 m en 40 sitios. Los patrones se analizaron con el programa TWINSPAN, el cual produ...

The effect of a simulated-rain regime was evaluated on the development and seedling establishment of blue grama Bouteloua gracilis, and boer lovegrass (Eragrostis curvula var. conferta) under greenhouse conditions. A group of seedlings was maintained under waterings to field capacity while another group of seedlings was maintained under a simulated...