Results 11 to 20 of about 665 (112)

Mutational load and adaptive variation are shaped by climate and species range dynamics in Vitis arizonica. [PDF]

open access: yesNew Phytol
Summary Genetic load can reduce fitness and hinder adaptation. While its genetic underpinnings are well established, the influence of environmental variation on genetic load is less well characterized, as is the relationship between genetic load and putatively adaptive genetic variation.
Fiscus CJ   +3 more
europepmc   +2 more sources

The frequency and importance of polyploidy in tropical rainforest tree radiations. [PDF]

open access: yesNew Phytol
Summary The presence of more than two copies of the genome in an organism, termed ‘polyploidy’, is a crucial force in plant evolution, generating genetic, phenotypic and ecological diversity. [Correction added on 22 January 2026, after first online publication: the preceding sentence has been corrected.] The Amazonian tree flora is the most species ...
Schley RJ   +9 more
europepmc   +2 more sources

A Dominant Founder Lineage Has Possible Fitness Costs for the Endangered Mexican Grey Wolf. [PDF]

open access: yesMol Ecol
ABSTRACT The Mexican grey wolf (Canis lupus baileyi) is an endangered and genetically distinct subspecies of grey wolf adapted to the warm climates of the southwestern United States and Mexico. Following centuries of eradication efforts, Mexican grey wolves were protected under the Endangered Species Act in 1976, prompting an international ex situ ...
Loera Y   +12 more
europepmc   +2 more sources

Variation in responses to temperature in admixed Populus genotypes predicts geographic shifts in regions where hybrids are favored. [PDF]

open access: yesNew Phytol
Summary Plastic responses of plants to their environment vary as a result of genetic differentiation within and among species. To accurately predict rangewide responses to climate change, it is necessary to characterize genotype‐specific reaction norms across the continuum of historic and future climate conditions comprising a species' range. The North
Mead A   +21 more
europepmc   +2 more sources

El uso de los RAPDs como marcadores moleculares en plantas

open access: yesBotan‪ical Sciences, 1997
Se presenta una revisión de los marcadores moleculares denominados RAPDs (pronunciado "rapids"; de su nombre en inglés: Random Amplified Polymorphic DNA; su traducción al español: Polimorfismos de ADN Amplificados al Azar).
Adriana Otero-Arnaiz   +2 more
doaj   +1 more source

Tecoma stans: variación asociada con la inhibición de la α-glucosidasa para el tratamiento de la diabetes

open access: yesRevista Biológico Agropecuaria Tuxpan, 2018
Tecoma stans es una planta utilizada en México y América Central para el tratamiento tradicional de la diabetes con un éxito variable dependiendo del origen, el entorno y otras fuentes de variación subyacentes. Para determinar la variación morfológica y
Antonio Álvarez Delgadillo   +3 more
doaj   +1 more source

Anthropogenic or Natural Dispersal: Case of the Spiny-Tailed Iguanas (<i>Ctenosaura</i>) on Clarion Island, Mexico. [PDF]

open access: yesEcol Evol
Species can colonize oceanic islands by both natural and human‐assisted dispersal and human‐caused species introductions have had catastrophic effects on ecosystems around the world. The Spiny‐tailed Iguanas inhabiting Clarion Island were previously considered introduced. Molecular data and analyses support iguanas' arrival on Clarion Island by natural
Mulcahy DG   +5 more
europepmc   +2 more sources

Domesticación, diversidad y recursos genéticos y genómicos de México: El caso de las calabazas

open access: yesTIP Revista Especializada en Ciencias Químico-Biológicas, 2018
La domesticación de plantas y animales permite estudiar diferentes procesos evolutivos, como la selección, adaptación y especiación. En este artículo se describen avances recientes en el estudio de las calabazas, las cuales constituyen el género ...
Luis E. Eguiarte   +11 more
doaj   +1 more source

Genética molecular de caracteres cuantitativos en cruzamientos dialélicos de tomate

open access: yesPesquisa Agropecuária Brasileira, 2011
El objetivo de este trabajo fue evaluar marcadores moleculares y caracteres cuantitativos en un cruzamiento dialélico completo sin recíprocos, entre cinco líneas recombinantes de tomate y sus híbridos.
Guillermo Raúl Pratta   +6 more
doaj   +1 more source

Diversidad genética y conservación de pinos nativos de la cuenca del río Cupatitzio, en Michoacán

open access: yesRevista Mexicana de Ciencias Forestales, 2019
La conservación de los hábitats terrestres asociados a cuencas hidrográficas tiene como componente intrínseco la conservación de los recursos genéticos de las especies que conforman la cubierta vegetal de estos sistemas.
Etelbina Ramírez Enríquez   +3 more
doaj   +1 more source

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