Polibotánica

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List of Papers (Total 64)

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...

Vegetación y flora de un bosque relictual de Picea chihuahuana Martínez del norte de México

Forty eight 20 x 20 m sites were randomly established within the area of distribution of Picea chihuahuana, the objective being to elucidate the structure and composition of the forest. Dasonomic variables, including species frequency, height, DAP (diameter at breast height), overstory cover in m2, as well as such ecological variables as altitude, slope, exposure, depth of...

La familia Icacinaceae en la Península de Yucatán, México

A taxonomic treatment of the family Icacinaceae in the Yucatán Peninsula (Mexico) is presented including a description of the genus Ottoschulzia Urb., and information about the distribution of Ottoschulzia pallida Lundell the only know species in the area.

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...

Efecto de polvos de asteráceas sobre el gorgojo del maíz (Sitophilus zeamais Motsch)

Eighty one species of Asteraceae collected in the Mexican highlands were evaluated for their usefulness against the maize weevil (Sitophilus zeamais Motsch). Flowers and leaves of each species were separated, dehydrated, and ground. One hundred grams of disinfected grains of maize cv. Cacahuazintle were placed in 250 ml glass jar and mixed with 100 g of plant powder. Ten pairs of...

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.

Evaluación de la promoción del crecimiento de Cynodon dactylon L. por rizobacterias productoras de fitohormonas aisladas de un suelo contaminado con hidrocarburos derivados del petróleo

The selection of plant growth-promoting rhizobacteria (PGPR) can be based on the in vitro analysis of their auxin-producing and growth-promoting capabilities. This study determined the intrinsic production of indole acetic acid (IAA) by rhizobacteria isolated from petroleum-contaminated soil and tested its potential for growth promotion. The three isolated rhizobacteria (I, II...

Seed morphology, polyploidy and the evolutionary history of the epiphytic cactus Rhipsalis baccifera (Cactaceae)

A SEM survey of seed, stem, stomata, and fruit characters was conducted to investigate patterns of infraspecific variability in Rhipsalis baccifera. New and Old World seeds were analyzed to assess the taxonomic value of their morphological features and the presence of gigas characters in polyploid versus diploid subspecies. The seeds are mussel-shaped and correspond to the...

El género Corchorus (Tiliaceae) en México

The genus Corchorus L. belongs to the family Tiliaceae (sensu Cronquist, 1981) and includes an estimated 100 species worldwide. Most are herbaceous and occur mainly in pantropical regions. In America, there are 10 species currently recorded (Martínez, 1981) and in Mexico seven, of which C. aestuans L., C. hirtus. L., C. orinocensis Kunth, and C. siliquosus L. are native to...

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...

Uso de la corteza del coróngoro Ziziphus amole (Sessé & Moc.) M.C. Johnst. en la medicina tradicional xochipalense

The aim of this study was to assess the knowledge and medicinal use of corongoro, Ziziphus amole (Sesse & Moc.) M.C. Johnst., as reported by the inhabitants of Xochipala, Guerrero, through a questionnaire and to analyze their responses through statistical analysis. Fruits, leaves, stems, and bark were collected, and botanical specimens were prepared for taxonomic confirmation. A...

Efecto antifúngico de extractos de gobernadora (Larrea tridentata L.) sobre la inhibición in vitro de Aspergillus flavus y Penicillium sp.

Mexico is important as a producer and consumer of grains, of which maize is paramount owing to its extensive use as human food. The problematic phytosanitary issue with this crop is the high susceptibility of the grains to contamination by dangerous mycotoxins produced principally by the genera Aspergillus and Penicillium. In this experiment the antifungal activity of gobernadora...

Análisis polínico de tres muestras de miel de Zacatecas, México

A melissopalynological analysis of Apis mellifera L. honeys from two municipalities in the State of Zacatecas, Mexico, is presented. The pollen content was determined, and the different elements were quantified. Honeys from the Municipality of Guadalupe presented 12 and 14 pollen types. The 2006 Guadalupe sample was monofloral; it presented a dominant component of Asteraceae...

Regeneración natural de la selva alta perennifolia en el parque estatal Agua Blanca, Macuspana, Tabasco, México

The tropical rainforest is one of the best developed and most complex ecosystems, yet is undergoing very rapid deterioration. The alternative course of recovering it requires knowledge of the process of regeneration. The objective of this research was to evaluate the process of natural regeneration in a high evergreen forest relict in Agua Blanca State Park, Macuspana, Tabasco...