Results 11 to 20 of about 4,672,682 (301)

Extent of cross-fertilization in Orobanche cumana Wallr.

open access: yesBiologia Plantarum, 2013
Sunflower broomrape (Orobanche cumana Wallr.) is considered a self-fertilizing species, but there is no indication as to whether it is strictly self-fertilized or that it presents some extent of cross-fertilization.
M. I. Rodríguez-Ojeda   +3 more
doaj   +2 more sources

Comparing levels of geitonogamous visitation by honey bees and other pollinators

open access: yesJournal of Pollination Ecology, 2023
Geitonogamy, the transfer of pollen from one flower to another on the same plant, is often the primary means of self-pollination in flowering plants.
Dillon Travis, Joshua Kohn
doaj   +1 more source

Self-Fertilization and the Evolution of Recombination [PDF]

open access: yesGenetics, 2005
Abstract In this article, we study the effect of self-fertilization on the evolution of a modifier allele that alters the recombination rate between two selected loci. We consider two different life cycles: under gametophytic selfing, a given proportion of fertilizations involves gametes produced by the same haploid individual, while ...
Denis, Roze, Thomas, Lenormand
openaire   +2 more sources

Balancing selection in self‐fertilizing populations [PDF]

open access: yesEvolution, 2021
Self-fertilization commonly occurs in hermaphroditic species, either occasionally or as the main reproductive mode. It strongly affects the genetic functioning of a population by increasing homozygosity and genetic drift and reducing the effectiveness of recombination.
openaire   +3 more sources

Additive and non-additive epigenetic signatures of natural hybridization between fish species with different mating systems

open access: yesEpigenetics, 2022
Hybridization is a major source of evolutionary innovation. In plants, epigenetic mechanisms can help to stabilize hybrid genomes and contribute to reproductive isolation, but the relationship between genetic and epigenetic changes in animal hybrids is ...
Waldir M. Berbel-Filho   +7 more
doaj   +1 more source

Self-fertilization in the freshwater snails Helisoma duryi and Helisoma trivolvis Autofecundação nos moluscos planorbídeos Helisoma duryi e Helisoma trivolvis

open access: yesMemorias do Instituto Oswaldo Cruz, 1988
Fifty specimens of five strains (10 per strain) of Helisoma duryi from Lima (Peru), St. Croix (Virgin Islands), Formosa (Brazil), Cartago (Costa Rica) and St. Vincent (Lesser Antilles), reared in isolation for about 150 days, laid 103 eggs.
W. Lobato Paraense, Lygia R. Corrêa
doaj   +1 more source

Hybridization generates a hopeful monster: a hermaphroditic selfing cichlid [PDF]

open access: yesRoyal Society Open Science, 2016
Compared with other phylogenetic groups, self-fertilization (selfing) is exceedingly rare in vertebrates and is known to occur only in one small clade of fishes.
Ola Svensson   +3 more
doaj   +1 more source

Fertilization of Ascidians: Gamete Interaction, Self/Nonself Recognition and Sperm Penetration of Egg Coat

open access: yesFrontiers in Cell and Developmental Biology, 2022
Fertilization is one of the most important events in living organisms to generate a new life with a mixed genetic background. To achieve successful fertilization, sperm and eggs must undergo complex processes in a sequential order.
Takako Saito   +2 more
doaj   +1 more source

Protein-carbohydrate interactions during fertilization [PDF]

open access: yes, 1998
Interaction between gametes during fertilization is at least in part regulated by carbohydrate moieties of the zona pellucida (ZP) and carbohydrate binding proteins of the sperm surface. This review focuses on the protein-carbohydrate interactions during
Plendl, J., Sinowatz, Fred, Kolle, S.
core   +1 more source

Microsatellite Primers for Camissoniopsis cheiranthifolia (Onagraceae) and Cross-Amplification in Related Species

open access: yesApplications in Plant Sciences, 2014
Premise of the study: We developed 24 nuclear microsatellite primers from an enriched genomic library for the Pacific coastal dune endemic Camissoniopsis cheiranthifolia to study the consequences of mating system differentiation, the genetics of species'
Adriana López-Villalobos   +2 more
doaj   +1 more source

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