Results 31 to 40 of about 21,292 (252)

Plant Mating Systems Often Vary Widely Among Populations

open access: yesFrontiers in Ecology and Evolution, 2018
Most flowering plants are hermaphroditic, yet the proportion of seeds fertilized by self and outcross pollen varies widely among species, ranging from predominant self-fertilization to exclusive outcrossing.
Michael R. Whitehead   +4 more
doaj   +1 more source

The geographic distribution of saccharomyces cerevisiae isolates within three Italian neighboring winemaking regions reveals strong differences in yeast abundance, genetic diversity and industrial strain dissemination [PDF]

open access: yes, 2017
In recent years the interest for natural fermentations has been re-evaluated in terms of increasing the wine terroir and managing more sustainable winemaking practices.
Almeida   +63 more
core   +4 more sources

The limits of mean-field heterozygosity estimates under spatial extension in simulated plant populations [PDF]

open access: yes, 2012
Computational models of evolutionary processes are increasingly required to incorporate multiple and diverse sources of data. A popular feature to include in population genetics models is spatial extension, which reflects more accurately natural ...
Allaby, Robin G., Kitchen, James
core   +6 more sources

Conspecific crop-weed introgression influences evolution of weedy rice (Oryza sativa f. spontanea) across a geographical range.

open access: yesPLoS ONE, 2011
BackgroundIntrogression plays an important role in evolution of plant species via its influences on genetic diversity and differentiation. Outcrossing determines the level of introgression but little is known about the relationships of outcrossing rates,
Han-Bing Xia   +4 more
doaj   +1 more source

The long and the short of it: long-styled florets are associated with higher outcrossing rate in Senecio vulgaris and result from delayed selfpollen germination [PDF]

open access: yes, 2016
The research reported in this article was funded in part by the Natural Environment Research Council under grants: GR3/6203A - Male competition and outcrossing rate in a hermaphrodite plant.
Barrett SCH   +8 more
core   +2 more sources

Reproductive success through high pollinator visitation rates despite self incompatibility in an endangered wallflower [PDF]

open access: yes, 2016
PREMISE OF THE STUDY: Self incompatibility (SI) in rare plants presents a unique challenge—SI protects plants from inbreeding depression, but requires a sufficient number of mates and xenogamous pollination. Does SI persist in an endangered polyploid? Is
Herman, Julie A.   +6 more
core   +2 more sources

Whole genome sequencing-based mapping and candidate identification of mutations from fixed zebrafish tissue [PDF]

open access: yes, 2017
As forward genetic screens in zebrafish become more common, the number of mutants that cannot be identified by gross morphology or through transgenic approaches, such as many nervous system defects, has also increased.
Ackerman, Sarah D   +8 more
core   +6 more sources

Exploring the relationship between tychoparthenogenesis and inbreeding depression in the Desert Locust, Schistocerca gregaria [PDF]

open access: yes, 2017
Tychoparthenogenesis, a form of asexual reproduction in which a small proportion of unfertilized eggs can hatch spontaneously, could be an intermediate evolutionary link in the transition from sexual to parthenogenetic reproduction.
Blondin, Laurence   +4 more
core   +1 more source

Isolation and Characterization of Microsatellite Markers for the Cleistogamous Species Lamium amplexicaule (Lamiaceae)

open access: yesApplications in Plant Sciences, 2013
Premise of the study: Lamium amplexicaule is a cleistogamous plant that produces both closed flowers (obligately self-pollinated) and open flowers (potentially outcrossed).
Bojana Stojanova   +3 more
doaj   +1 more source

Biparental inbreeding depression, genetic relatedness and progeny vigor in a wind-pollinated treeline species in Argentina [PDF]

open access: yes, 2009
Spatially restricted gene flow and resulting spatial genetic structure are generally considered as being the primary controlling factors in the dynamics of biparental inbreeding depression in a wide range of plant species.
Cocucci, Andrea Aristides   +7 more
core   +2 more sources

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