ISSN: 2310-2799
Aviso:
Los resultados se limitan exclusivamente a documentos publicados en revistas incluidas en el Catálogo 2.0 de Latindex.
Para más información sobre el Descubridor de Artículos escribir al correo: descubridorlatindex@gmail.com.
Leer más
Búsqueda por:
546,196 artículos
|
Año:
1983
ISSN:
2007-4476, 2007-4298
Palomino-Hasbach, Guadalupe
Sociedad Botánica de México
Resumen
The protective effect of the ascorbic acid against the physiological damage induced by gamma irradiation and MMS in Triticale caryopses was rested: caryopses were irradiated in absence of water, with water or in an ascorbic acid solution. No variation was detected in the survival following the different treatments. Germination speed was not affected by the different gamma irradiation doses. MMS concentrations and ascorbic acid were toxic.
|
|
Año:
1983
ISSN:
2007-4476, 2007-4298
Lorenzo S.-A., Lila; Ramírez-Roa, A.; Soto-Arenas, M. A.; Breceda, A.; Calderón, M. del C.; Cortéz, H.; Puchet, C.; Ramírez, M.; Villalón, R.; Zapata, E.
Sociedad Botánica de México
Resumen
Floristics
|
|
Año:
1983
ISSN:
2007-4476, 2007-4298
Ludlow-Wiechers, Beatriz; Ojeda, Lina
Sociedad Botánica de México
Resumen
The pollen of Agave angustifolia Haw., A. fourcroydes Lem., A. sisalana Perrine and Manfreda maculata (Regel) Rose, occurring in the Yucatan Peninsula have been studied, with special emphasis on A. angustifolia. Observations were made with light and scanning microscopy. Considerable variation in apertures was found that included: anasulcate, tricotomosulcate, "horse shoe" type and disulcate. Ornamentation is basically the same among the species. The pollen of Agave and Manfreda are very similar suggesting they are closely related.
|
|
Año:
1983
ISSN:
2007-4476, 2007-4298
Wendt, Tom
Sociedad Botánica de México
Resumen
The present article is the first of a series concerning new species and other information on the plants of the Zona de Uxpanapa, an area of lowland rain forest in the extreme southeast of Veracruz and adjacent parts of Oaxaca, México. Colubrina johnstonii sp. nov. (Rhamnaceae) is described; it is related to C. elliptica and other species. The chromosome count of n = 16 for the new species is exrraordinary for the family and represents the first count for Colubrina.
|
|
Año:
1983
ISSN:
2007-4476, 2007-4298
González-E., Socorro
Sociedad Botánica de México
Resumen
During the review of the Cyperaceae family in the Valle of Mexico it was found that 35 names of plants of this family cited in the literature for the area, correspond to synonyms of as many species and varieties.
|
|
Año:
1983
ISSN:
2007-4476, 2007-4298
Rzedowski, J.
Sociedad Botánica de México
Resumen
Didymaea floribunda is described on the basis of materials collected in Jalisco, Michoacan, Guerrero, State of Mexico, Morelos, Distrito Federal and Veracruz. The species is similar to the Guatemalan D. hispidula L. O. Williams. Richardia gandarae sp. n., so far only known from southwestern San Luis Potosí, seems to be related to R. tricocca ( Torr. & Gray) Standl., from Mexico and southern United States of America.
|
|
Año:
1983
ISSN:
2007-4476, 2007-4298
Palacios-Rios, Mónica; Riba, Ramón
Sociedad Botánica de México
Resumen
In this paper a key is presented far the identification of twenty species of the genus Adiantum; although three of them have not been collected in the state of Veracruz their existence is suspected because they grow in adjacent areas of the states of Tabasco and Chiapas. For each species, the synonymy and a short description is offered and reference is made to papers with illustrations for the species.
|
|
Año:
1983
ISSN:
2007-4476, 2007-4298
Austin, D. F.; Pedraza, R. A.
Sociedad Botánica de México
Resumen
An artificial key for the identification of the 16 genera of Convolvulaceae found in Mexico is given. Each genus is described briefly and is accompanied by information on distribution and the number of species. Bibliography of the most recent studies of each genus is given, as well as a preliminary checklist of the 109 species now recognized for Mexico, excluding those of lpomoea which are estimated at 150.
|
|
Año:
1983
ISSN:
2007-4476, 2007-4298
Dirzo, Rodolfo
Sociedad Botánica de México
Resumen
The concept of co-evolution was originally proposed by Ehrlich and Raven (1964) and arose from of the systematic evaluation of a series of plant families that constitute the food resource exploited by various groups of butterflies. Ehrlich and Raven concluded that the secondary metabolites of plants play a determining role in the processes of exploitation by phytophagous, and visualized a process of co-evolution in which plants and their phytophagous insecros live (in evolutionary time) continuously adapting to changes in one and the other.
|
Hecho en México, Universidad Nacional Autónoma de México (UNAM). 1997-2025.
Se autoriza la reproducción total o parcial de los textos aquí publicados siempre y cuando se cite la fuente completa y la dirección electrónica del sitio web.
Mapa del sitio | Créditos
|