Polibotánica

http://www.scielo.org.mx/scielo.php?script=sci_issues&pid=1405-2768&lng=pt&nrm=iso

List of Papers (Total 25)

Estudio etnobotánico de las bromelias epifitas en la comunidad de Santa Catarina Ixtepeji, Oaxaca, México

In the state of Oaxaca epiphytic bromeliads are used to decorate nativity scenes, by reason of which during November and December bromeliads are collected in significant numbers from the forests surrounding the capital. This harvesting puts the survival of these bromeliads at risk, and, for this reason, authorities have begun to regulate and restrict harvesting. In order to...

Evaluación del crecimiento, actividad de hemoperoxidasas y remoción de fenantreno de los cultivos celulares de Fouquieria splendens y Fouquieria fasciculata

Knowledge about the metabolic potential of plants to transform and degrade xenobiotics has been generated by analyzing responses of in vitro plant cell cultures to contaminants, and these reactions have been considered a useful tool to evaluate the phytotoxicity, metabolic rates and persistence of xenobiotics in plants. The present study evaluated phenanthrene removal by...

La domesticación de plantas en México: comparación de la forma cultivada y silvestre de Byrsonima crassifolia (Malpighiaceae)

Domesticated plants show characteristics known as domestication syndrome, which enables better utilization of the plants by humans. Plant domestication has been studied mainly in herbaceous annuals. In this work, samples of Byrsonima crassifolia trees-changunga, the wild form, and nanche, the cultivated form-were taken from the region of Uruapan, Mexico. The objective of this...

Plantas tradicionalmente usadas como plaguicidas en el estado de Hidalgo, México

The objective of this study was to investigate the traditional use of plants as pesticides in Hidalgo, Mexico. In the region the inhabitants use 124 species of plants, from which they obtain 186 products like infusions and smoke to control 29 types of vertebrate and invertebrate pests and protect 15 goods. All life forms and all parts of the plants are used. The plants are...

Primer registro de Ischnoderma resinosum (Schrad.) P. Karst. y Tyromyces fissilis (Berk. & M.A. Curtis) Donk (Polyporales, Basidiomycota) en México

Ischnoderma resinosum (Schrad.) P. Karst., founded in Guerrero and Tyromyces fissilis (Berk. & M.A. Curtis) Donk from Estado de México are described and recorded first time to Mexico, specimens boucher are in ENCB and FCME herbaria.

Estudio micoflorístico de los hongos poliporoides del estado de Hidalgo, México

We inventoried 470 specimens of polypore fungi originating from 34 municipalities of the state of Hidalgo, Mexico. These collections were made between 1957 and 2005, 83 of them by the authors between 1994 and 2005. The material is deposited primarily in the Herbarium ENCB, but some collections are duplicated in the mycotheca of the Universidad Autónoma del Estado de Hidalgo (UAEH...

Morfología y anatomía de radículas múltiples en plántulas de maíz derivadas de cariopsis con poliembrionía

Results related to maize seedlings anatomy and morphology as well as multiple seedlings and radicles per germinated seed are presented. Three populations and their six possible hybrids were used. Two populations are highly polyembryonic (PE) meanwhile the third represents a normal maize type (Non-Polyembryonic). 24 seeds from each genotype were induced to germination. The...

Ciclo de vida de Pellaea ternifolia (Cav.) link subsp. ternifolia (Pteridaceae-Polypodiidae)

We describe the life cycle of Pellaea ternifolia (Cav.) Link subsp. ternifolia. Studied material was collected in a disturbed forest of Pinus in San Miguel de los Alcanfores, Tlaxco municipality, State of Tlaxcala, Mexico. Spores were sown in polyurethane vessel of 262 ml prepared in the following manner: the glasses were layered with ceramic, river stone, mosquito net and three...

Follajes comercializados en dos mercados de flores del Altiplano Central Mexicano

The traditional flower markets Xochiquetzal in Tenancingo, State of Mexico and Jamaica in Mexico City, are important because of the merchandising of foliage plants of which is unknown their taxonomic affiliation and that's why, it is relevant to perform an inventory. To do this, both markets were visited and bought plants then, a herbalization and a taxonomic affiliation was made...

Fenología de la floración de ulmus pumila l. (ulmaceae) en la ciudad de Bahía Blanca (Argentina)

Phenology is the study of predictably occurring biological events and their relationship to environmental conditions as light, temperature, humidity, etc. The aims of this study were to describe flowering phenological phases of Ulmus pumila L. in Bahía Blanca city and relate flowering stage with weather data of minimum and maximum temperatures. During two flowering seasons (July...

Estructura y composición de la vegetación leñosa de selvas en diferentes estadios sucesionales en el ejido El Carmen II, Calakmul, México

We studied the floristic diversity of the semi evergreen tropical forest, in the "ejido" El Carmen II, Calakmul, Campeche. In nine plots of 300 m2, we represented secondary vegetation ("acahual") with seven years old, secondary vegetation with 15 years old, and mature tropical forest, in which we measured all woody individuals DBH ≥ 1 cm. We found 996 woody individuals of 78...

Análisis cariotípico de Agave marmorata y Agave peacockii (Agavaceae) ubicados en las terrazas aluviales del río Zapotitlán, Puebla, México

The aim of this study was to determine the spatial distribution, chromosome number and karyotype of Agave marmorata Roezl and Agave peacockii Croucher within Zapotitlan Salinas Valley, Puebla. This study reports for the first time the chromosome number of A. marmorata and A. peacockii, which shows that the ploidy levels of both species is 2n = 2x = 60. Moreover, the distribution...

Recuperación e identificación de macrorrestos arqueobotánicos en el Museo Nacional de las Culturas, Ciudad de México

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 deposits of such excavations with...

Antibacterial activity of some medicinal Eupatorium species against antibiotic resistant pathogenic bacteria

Thirty six samples arising from hexane, dichloromethane, and methanol extracts from four medicinal Eupatorium species were screened against Gram positive and Gram negative resistant bacteria associated with nosocomial infections by disk diffusion method. The best antibacterial extracts were selected by correspondence analysis. The hexane extracts showed high inhibition against...

Cianofitas de los sistemas fluvio-lagunares Pom-Atasta y Palizada del Este, adyacentes a la Laguna de Términos, Campeche, México

The cyanophyta are a diverse group prokaryotic photosynthetic microorganisms, distributed in different terrestrial and aquatic environments. Some species of cyanophyta, can form toxic or harmful algal bloom. The objective of this study was to identify the species composition of cyanophyta in fluvio-lagoon systems Pom-Atasta (PA) and East Palisade (PE). Water samples were...

Análisis de la distribución de las especies de helechos y afines del valle de México, notas ecológicas y florísticas

An analysis of distribution for 40 genera and 113 species of pteridophytes from the Valley of Mexico according vegetation's types of Rzedowski (2001) is presented. We found 54% of the species in cloud forest; 45% in conifers forests; 33.6% in Quercus forest; 34.5% in grasslands; 28% in xero-philous scrubs; 22% in pine-oak forest; 3.5% in Quercus scrub and 1.8% in aquatic...

Pteridofitas extintas o raras del Valle de México

The Valle de México have 113 species of pteridophytes, 18 species are extinct in the zone and 19 species are rare or few frequent, belong 23 genera and 37 species according IUCN (1994). We revised 1400 specimens of pteridophytes collected in fiels and exemplaries of national and international herbarium as ENCB, MEXU, CHAPA, P, K, LP, SI, MO. We found some species which were...