scholarly journals Ambos sexos de Scyphophorus acupunctatus (Coleoptera: Dryophthoridae) pueden iniciar la colonización de la planta de agave (Asparagaceae)/Both sexes of Scyphophorus acupunctatus (Coleoptera: Dryophthoridae) can start the colonization of the agave plant (Asparagaceae)

2015 ◽  
Vol 31 (3) ◽  
Author(s):  
Pedro Figueroa-Castro ◽  
Héctor González-Hernández ◽  
José Luis Carrillo-Sánchez ◽  
José Ignacio Del Reallaborde ◽  
Juan Fernando Solís-Aguilar ◽  
...  
Keyword(s):  
Host Plants ◽  
Field Experiments ◽  
Agave Tequilana ◽  
Agave Angustifolia

This study was conducted for determining the pioneer sex of agave weevil on agave plants. Field experiments were made on plantations of Agave tequilana Weber var. Azul in Jalisco, and Agave angustifolia Haw. and Agave cupreata Trel. & Berger in Guerrero. It was found that both sexes were able to start colonizing agave host plants. Most of the females that colonized host plants were gravid.

scholarly journals Meiotic restitution mechanisms involved in the formation of 2n pollen in Agave tequilana Weber and Agave angustifolia Haw

SpringerPlus ◽  
2012 ◽  
Vol 1 (1) ◽  
pp. 17 ◽  
Author(s):  
Víctor Gómez-Rodríguez ◽  
Benjamín Rodríguez-Garay ◽  
Rodrigo Barba-Gonzalez
Keyword(s):  
Agave Tequilana ◽  
2N Pollen ◽  
Meiotic Restitution ◽  
Agave Angustifolia

Morphological and molecular diversity of Agave tequilana Weber var. Azul and Agave angustifolia Haw. var. Lineño

2009 ◽  
Vol 29 (1) ◽  
pp. 220-228 ◽  
Author(s):  
B. Rodríguez-Garay ◽  
J.A. Lomelí-Sención ◽  
E. Tapia-Campos ◽  
A. Gutiérrez-Mora ◽  
J. García-Galindo ◽  
...  
Keyword(s):  
Molecular Diversity ◽  
Agave Tequilana ◽  
Agave Angustifolia

scholarly journals Caracterización fisicoquímica de cuatro especies de agaves con potencialidad en la obtención de pulpa de celulosa para elaboración de papel

DYNA ◽  
2016 ◽  
Vol 83 (197) ◽  
pp. 232 ◽  
Author(s):  
Edith Jiménez Muñoz ◽  
Francisco Prieto-García ◽  
Judith Prieto Méndez ◽  
Otilio Arturo Acevedo Sandoval ◽  
Rodrigo Rodríguez Laguna
Keyword(s):  
Agave Tequilana ◽  
Agave Angustifolia ◽  
Agave Salmiana

<p>El objetivo general de este trabajo fue encontrar un nuevo valor agregado a las hojas de las agaváceas, desecho de la agroindustria. Se estudiaron cuatro especies de agaves de tres estados de la república mexicana: Agave angustifolia (Oacaxa), Agave tequilana (Jalisco), Agave salmiana y Agave lechuguilla (Hidalgo). Luego de una clasificación taxonómica, fenológica, ecológica y etnobotánica (basados en morfología comparada), se sometieron a diversos análisis físicos (humedad, molienda, tamizaje, granulometría y características foliares, MEB) y químicos (cenizas grasas y aceites, proteínas, análisis TGA y DTGA, así como FTIR). Las especies de A. angustifolia y A. tequilana son las que presentan un óptimo tamaño de fibra para la elaboración de papel. Corresponde también a los mayores porcentajes de celulosa (44.3% y 36.8%) por DTGA. Del análisis proximal, se evidencia que las dos especies definidas como mejores para la obtención de pulpa de celulosa, presentan pequeñas diferencias significativas en contenidos de grasas, proteínas, material solubilizable en agua caliente (AT) como en solución moderadamente alcalina y/o alcohólica.</p>

scholarly journals Interaction between ants and plants bearing extrafloral nectaries in cerrado vegetation

1998 ◽  
Vol 27 (2) ◽  
pp. 161-176 ◽  
Author(s):  
Paulo S. Oliveira ◽  
Marcio R. Pie
Keyword(s):  
Plant Species ◽  
Host Plants ◽  
Field Experiments ◽  
Extrafloral Nectaries ◽  
Insect Herbivores ◽  
Cerrado Vegetation ◽  
Plant Parts ◽  
The Past ◽  
Plant Foliage ◽  
Herbivore Species

Extrafloral nectaries (EFNs) are nectar-secreting glands not directly involved with pollination which may occur on virtually all above-ground plant parts of angiosperms. Recent studies revealed that such glands are widely distributed amongst the woody flora of the Brazilian cerrados. Plants bearing EFNs are visited day and night by a diverse assemblage of nectarivorous ants. In this review we present the data gathered during the past 15 years on the interaction between ants and EFN-bearing plants in cerrado vegetation. Field experiments indicate that ants visiting EFNs may prey or attack insect herbivores on the plant foliage, significantly reducing herbivore damage to leaves, buds or flowers. As a response, some herbivore species have developed an array of mechanisms to circumvent the ants' deterring capacities on their host plants. Ant-derived benefits to plants, however, may vary with the species of visiting ant, with the defensive tactics of the associated herbivores, as well as with the plant species. We discuss the results obtained for different cerrado plant species, and suggest some promising topics for future experimental investigation.

WINTER SURVIVAL OF ROOT-KNOT NEMATODES IN SOUTHWESTERN ONTARIO

1963 ◽  
Vol 43 (3) ◽  
pp. 361-364 ◽  
Author(s):  
R. M. Sayre
Keyword(s):  
Winter Wheat ◽  
Cover Crop ◽  
Host Plants ◽  
Field Experiments ◽  
Bare Soil ◽  
Winter Survival ◽  
Meloidogyne Hapla ◽  
Root Knot Nematode ◽  
Root Knot Nematodes

In field experiments at Harrow, Ontario, the northern root-knot nematode, Meloidogyne hapla Chitwood, 1949, successfully overwintered, although its populations were severely reduced. Two other species, M. incognita (Kofoid and White, 1919) Chitwood, 1949, and M. javanica (Treub, 1885) Chitwood, 1949, were unable to overwinter in bare soil or under a cover crop of winter wheat or in the roots of the perennial host plants peach and asparagus.

New cytotaxonomical determinants recognized in six taxa of Agave in the sections Rigidae and Sisalanae

1991 ◽  
Vol 69 (6) ◽  
pp. 1257-1264 ◽  
Author(s):  
I. Castorena-Sánchez ◽  
R. M. Escobedo ◽  
A. Quiroz
Keyword(s):  
Key Words ◽  
Karyotype Analysis ◽  
Point Mutations ◽  
Agave Tequilana ◽  
Speciation Process ◽  
Agave Angustifolia ◽  
Agave Fourcroydes ◽  
Intersectional Hybrid ◽  
Agave Sisalana

New cytotaxonomical determinants are presented for the following taxa of Agave: (I) section Rigidae: Agave fourcroydes Lemaire (5x = 150), first karyotype; Agave angustifolia Haworth (sensu Gentry), new count (6x = 180), first karyotype; Agave angustifolia Haworth var. marginata Hort. (2x = 60); and Agave tequilana Weber, new count (2x = 60), first karyotype; (II) section Sisalanae: Agave sisalana Perrine (5x = 150), first karyotype; and (III) intersectional hybrid: Agave hybrid 11 648 new count (2x = 60), first karyotype. Chromosomes are classified and arm number, chromatin length, and variability are discussed. These results suggest (i) a speciation process via limited rearrangements and point mutations in the small chromosomes of the complement, within the euploidy level rather than karyotype diversification and (ii) a reconsideration to assign them to the 2C level of Stebbins karyotype classification. Key words: fiber agaves, karyotype analysis.

scholarly journals Primer reporte de Peltophorus polymitus Boheman (Coleoptera: Curculionidae) en tres especies de Agave (Asparagaceae) en México/ First report of Peltophorus polymitus Boheman (Coleoptera: Curculionidae) on three species of Agave (Asparagaceae) in Mexico.

2015 ◽  
Vol 31 (3) ◽  
Author(s):  
Héctor González-Hernández ◽  
Pedro Figueroa-Castro ◽  
Ramón Rubio Cortés ◽  
Robert W. Jones ◽  
Jorge M. Valdéz-Carrasco
Keyword(s):  
Agave Tequilana ◽  
First Report ◽  
Agave Angustifolia ◽  
First Time

Peltophorus polymitus Boheman (Coleoptera: Curculionidae) is recorded for the first time attacking Agave tequilana Weber var. Azul in Jalisco and Agave cupreata Trel. & Berger and Agave angustifolia Haw., in Guerrero. The variety of damages to Agave plants caused by this weevil are described.

scholarly journals Contextualización socioambiental del agave en Tonaya, Jalisco, México

2017 ◽  
Vol 29 (70) ◽  
Author(s):  
Francia Elizabeth Rodríguez Contreras ◽  
Luis Manuel Martínez Rivera ◽  
Carlos Palomera García
Keyword(s):  
Water Quality ◽  
Environmental Pollution ◽  
Environmental Effects ◽  
Historical Context ◽  
Liquid Waste ◽  
Agave Tequilana ◽  
Government Institutions ◽  
Agave Angustifolia ◽  
Environmental Damages ◽  
The Government

En Tonaya, el agave verde (Agave angustifolia Haw) se cultiva desde 1845, pero en la actualidad el agave azul (Agave tequilana Weber) lo ha reemplazado casi en su totalidad. El cambio de cultivo y el incremento en la demanda del licor de agave provocó daños ambientales. En este artículo se describe el contexto histórico, los efectos socioambientales generados por la industria destiladora de agave, y también se analiza cómo intervienen las instituciones gubernamentales; un estudio hasta hoy inexistente para la región. Se trabajó con información de archivos bibliográficos y de entrevistas a actores clave, mediante la técnica bola de nieve. Además, se analizaron los efectos causados a la biodiversidad y a la calidad del agua del vertido de desechos líquidos o vinazas en el río Tuxcacuesco. Se tomaron decisiones que redujeron la contaminación ambiental, sin embargo, muchas de las acciones se han abandonado, lo que de nuevo pone en riesgo la integridad del sistema acuático y lo que representa. Socio-environmental contextualization of agave in Tonaya, Jalisco, MexicoIn Tonaya, the Agave angustifolia Haw has been cultivated since 1845, but today has been replaced almost entirely by the Agave tequilana Weber. This replacement and the increase in the demand for agave liquor caused environmental damages. The historical context and the socio-environmental effects generated by the agave distiller industry are described in this article, and the role played by the government institutions is analyzed, a study on the region that was nonexistent until today. Information from bibliographic archives and from interviews to key actors, using the snowball technique, was obtained. Moreover, the effects on biodiversity and water quality by the dumping of liquid waste or vinasse into the Tuxcacuesco river were examined. Decisions were made reducing environmental pollution; however, many of these actions have been abandoned, putting at risk again the water system’s integrity and what it represents.

scholarly journals Factibilidad económica de la producción de bioetanol con tres especies de Agave spp. en regiones productoras de México

2017 ◽  
Vol 7 (6) ◽  
pp. 1439
Author(s):  
Rafael Rodríguez-Hernández ◽  
Aristeo Barrios-Ayala ◽  
Hugo Ernesto Flores-López ◽  
Velia Sánchez-Vásquez ◽  
Rafael Ariza- Flores
Keyword(s):  
Agave Tequilana ◽  
Agave Angustifolia

El uso creciente de combustibles fósiles ha provocado el calentamiento global por las emisiones de CO2 a la atmosfera, lo que ha determinado la necesidad de generar tecnologías para producir combustibles no convencionales. Algunos países han mostrado adelantos tecnológicos para la producción y uso de biocombustibles; sin embargo, se han utilizado cultivos necesarios para la alimentación humana, por lo que se requiere explorar nuevas especies que permitan generar combustibles de bajos costos ambientales y económicos. El género Agave es una alternativa para producir bioetanol por sus altos contenidos de azúcares en la piña y las hojas. El objetivo de esta investigación fue determinar la factibilidad económica de producir bioetanol con Agave tequilana Weber., Agave angustifolia Haw. y Agave cupreata Trel. Se generaron indicadores económicos desde un punto de vista integral de la cadena de valor como la relación de costo privado (RCP), tasa interna de retorno (TIR), valor actual neto (VAN) y punto de equilibrio (PE). Los resultados indicaron que la producción de bioetanol es factible económicamente para los sectores primario e industrial en Matatlán, Oaxaca y Amatitán, Jalisco, mientras que en Tepatitlán, Jalisco resultó rentable para el sector primario no así para el sector industrial, en Chilapa Guerrero resultó no rentable para el sector primario pero sí para el sector industrial. La rentabilidad está influenciada por el precio de la materia prima y el precio del bioetanol lo que hace necesario un proceso de negociación de precios entre sectores.

scholarly journals Attraction of adult Costelytra zealandica to 4hydroxybenzaldehyde

2009 ◽  
Vol 62 ◽  
pp. 205-210
Author(s):  
R.B. Chapman
Keyword(s):  
Sex Pheromone ◽  
Host Plants ◽  
Field Experiments ◽  
Solvent Type ◽  
Costelytra Zealandica ◽  
Acting In Concert

Field experiments were conducted to determine the attraction of adult Costelytra zealandica (White) to phenol the sex pheromone for this species and the phenolic aldehyde 4hydroxybenzaldehyde when presented separately and in a mixture in traps Aqueous phenol and 4hydroxybenzaldehyde in acetone were equally attractive to beetles when presented separately in traps; a mixture of aqueous phenol and 4hydroxybenzaldehyde in acetone also attracted similar numbers of beetles to either chemical alone When the two chemicals were presented in separate tubes in the same trap ca 2fold greater numbers of beetles were attracted than with either component alone Supplementary experiments showed solvent type and age of solution had no influence on the attractiveness of 4hydroxybenzaldehyde when presented alone in traps A possible explanation for the role of 4hydroxybenzaldehyde a component of some host plants of C zealandica acting in concert with the sex pheromone of this species is briefly discussed

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