Results 41 to 50 of about 1,228 (178)

Morfo-anatomía de plántulas en especies de Pachycereeae: ¿hasta cuando son plántulas?

Botan‪ical Sciences, 2011
Se describe y compara la morfo-anatomía de plántulas de la tribu Pachycereeae con el objetivo de establecer diferencias entre las fases del crecimiento inicial y establecimiento y distinguir así la diferenciación entre plántula e individuo juvenil.
Sofía Loza-Cornejo, Teresa Terrazas
doaj   +1 more source

Pollen morphology of Pachycereus weberi (Cactaceae): an evaluation of variation in pollen size

Plant Systematics and Evolution, 2012
Pollen morphology within a single plant species has been regarded as a relatively constant trait; it has, thus, been used as a taxonomic character. Numerous palynological studies have described the morphology of pollen from Cactaceae and from other families of plants.
Figueroa Castro, Dulce María, Aguilar García, Sandra Aracely, Castañeda Posadas, Carlos   +2 more
openaire   +2 more sources

Behavioral evolution accompanying host shifts in cactophilic Drosophila larvae

Ecology and Evolution, Volume 8, Issue 14, Page 6921-6931, July 2018., 2018
For insects living on plants, the shape and size of the plant should encompass its foraging environment and therefore affect behavior. Here, we show variation in locomotor and pupation behavior within and between species of cactophilic Drosophila that is related to the shape of the cactus they inhabit. Abstract For plant utilizing insects, the shift to
Joshua M. Coleman, Kyle M. Benowitz, Alexandra G. Jost, Luciano M. Matzkin   +3 more
wiley   +1 more source

Shaping species with ephemeral boundaries: the distribution and genetic structure of desert tortoise (Gopherus morafkai) in the Sonoran Desert region

Journal of Biogeography, Volume 43, Issue 3, Page 484-497, March 2016., 2016
Abstract Aim We examine the role biogeographical features played in the evolution of Morafka's desert tortoise (Gopherus morafkai) and test the hypothesis that G. morafkai maintains genetically distinct lineages associated with different Sonoran Desert biomes. Increased knowledge of the past and present distribution of the Sonoran Desert region's biota
Taylor Edwards, Mercy Vaughn, Philip C. Rosen, Cristina Meléndez Torres, Alice E. Karl, Melanie Culver, Robert W. Murphy   +6 more
wiley   +1 more source

Cacti community structure in a tropical Mexican dry forest under chronic disturbance

Botan‪ical Sciences, 2014
When agricultural lands in formerly dry forest are abandoned, chronic disturbance by livestock grazing and wood extraction may set back successional processes precluding older dry forest structure from be reached.
Luis Antonio Arias-Medellín, Alejandro Flores-Palacios, Cristina Martínez-Garza   +2 more
doaj   +1 more source

Effect of temperature, scarification and calcium concentrations on the germination of Gymnocalycium schickendantzii (F.A.C. Weber) Britton & Rose (Cactaceae) [PDF]

, 2011
Gymnocalycium schickendantzii (F.A.C. Weber) Britton & Rose (Cactaceae) es una especie endémica de Argentina. En la provincia de Mendoza las poblaciones de este cactus todavía no están siendo afectadas por las urbanizaciones y cultivos que ponen en ...
Méndez, Eduardo
core  

Light availability affects sex lability in a gynodioecious plant [PDF]

, 2016
PREMISE OF THE STUDY: Sex lability (i.e., gender diphasy) in plants is classically linked to the larger resource needs associated with the female sexual function (i.e., seed production) compared to the male function (i.e., pollen production).
Alonso, Arroyo, Ashman, Ashman, Asikainen, Bailey, Barrett, Caruso, Case, Charnov, Delph, Dommée, Dornier, Dufaÿ, Dufaÿ, Ehlers, Freeman, Gibson, Golenberg, Graff, Heschel, Horovitz, Husband, Jordano, Klaas, Koelewijn, Korpelainen, Lloyd, López-Villavicencio, McCauley, Miller, Minna-Maarit Kytöviita, Molau, Molina-Freaner, Nieuwhof, Philipp, Ramadan, Ramula, Sakai, Sandra Varga, Shykoff, Silvertown, Sugawara, Van Etten, Varga, Varga, Varga, Varga, Vega-Frutis, Widén, Wolfe, Yamashita, Zhang   +52 more
core   +1 more source

A Phytogeographical Classification of the North American Pacific Coast Based on Climate, Vegetation and a Floristic Analysis of Vascular Plants

Journal of Botany, Volume 2009, Issue 1, 2009., 2009
This study was designed to explore floristic variation along the Pacific coast from Cook Inlet, Alaska, to the southern tip of Baja California, Mexico. Data corresponding to 965 phytosociological relevés (including 686 vascular plants) obtained by sampling 279 coastal sites were examined.
Manuel Peinado, Miguel Ángel Macías, Juan Luis Aguirre, José Delgadillo, David L. Dilcher   +4 more
wiley   +1 more source

Heritability of seed weight in Maritime pine, a relevant trait in the transmission of environmental maternal effects [PDF]

, 2014
Quantitative seed provisioning is an important life-history trait with strong effects on offspring phenotype and fitness. As for any other trait, heritability estimates are vital for understanding its evolutionary dynamics.
A Biere, A Charpentier, A Lazaro, A Sivacioglu, A Solla, AI de-Lucas, AJ Crean, BR Murray, C Blade, C House, D Matziris, DA Roach, DA Roff, DJ Susko, DL Byers, E Danchin, E Jablonka, E Voeller, EP Lacey, FC Sorensen, G Vaughton, GAJ Platenkamp, J Castro, J Castro, J Liu, J Metz, J Silvertown, JB Holland, JD Fry, JM Gomez, JN Holland, KE Schwaegerle, L Sampedro, LM Wolfe, M Lynch, M Vivas, MC Castellanos, ME Hanley, MJ Banuelos, N Bilir, N Norden, NH Gomaa, O Bossdorf, R de la Mata, R Zas, R Zas, R Zas, RA Rapp, RC Littell, S Carles, SE Surles, SJ Mazer, SJ Mazer, SL Halpern, SM Roy, SR Lipow, TJ de Jong, U Wennstrom, V Sober, VO Sadras, WC Parker, WD Koenig, Y Willi   +62 more
core   +3 more sources

Spatial Variation in the Community of Insects Associated With the Flowers ofPachycereus weberi(Caryophyllales: Cactaceae)

Environmental Entomology, 2014
The positive relationship between productivity and species diversity is well-known. Insect communities associated with the flowers of Cactaceae species represent an interesting system to explore the productivity-diversity relationship because branches facing the equator receive more photosynthetically active radiation and have higher productivity. Thus,
Figueroa Castro, Dulce María, Valverde, Pedro Luis, Vite, Fernando, Carrillo Ruiz, Hortensia   +3 more
openaire   +3 more sources