Results 221 to 230 of about 20,542 (248)
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Functional Ecology, 2012
Summary1.Unreliable pollinator service is thought to promote the evolution of self‐compatible plant breeding systems, because selfing may provide reproductive assurance when outcrossing opportunity is limited. The recurrent evolution of self‐compatible homostyly from obligately outcrossing heterostylous species has been regarded as a classic example of
de Vos, Jurriaan M +4 more
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Summary1.Unreliable pollinator service is thought to promote the evolution of self‐compatible plant breeding systems, because selfing may provide reproductive assurance when outcrossing opportunity is limited. The recurrent evolution of self‐compatible homostyly from obligately outcrossing heterostylous species has been regarded as a classic example of
de Vos, Jurriaan M +4 more
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Facultative dichogamy and reproductive assurance in partially protandrous plants
Oikos, 2001Following the pioneering work on pollination biology of the late 18th and 19th centuries, the phenomenon of dichogamy (the separation of presentation of pollen and stigmas in time) was, together with a plethora of other floral features, interpreted exclusively as an adaptive mechanism enhancing outcrossing.
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American Journal of Botany, 2001
The reproductive assurance hypothesis posits that selection favors self‐pollination in flowering plants where mates and/or pollinators are scarce. A corollary is that self‐pollinating populations are expected to be superior colonizers of mate‐ and pollinator‐scarce environments.
J A, Fausto, V M, Eckhart, M A, Geber
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The reproductive assurance hypothesis posits that selection favors self‐pollination in flowering plants where mates and/or pollinators are scarce. A corollary is that self‐pollinating populations are expected to be superior colonizers of mate‐ and pollinator‐scarce environments.
J A, Fausto, V M, Eckhart, M A, Geber
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Clonal reproduction assured by sister chromosome pairing in dojo loach, a teleost fish
Chromosome Research, 2018Wild-type dojo loach (Misgurnus anguillicaudatus) commonly reproduces bisexually as a gonochoristic diploid (2n = 50), but gynogenetically reproducing clonal diploid lines (2n = 50) exist in certain districts in Japan. Clones have been considered to develop from past hybridization event(s) between two genetically diverse groups, A and B, within the ...
Masamichi Kuroda +4 more
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Ecology, 2006
(Uploaded by Plazi for the Bat Literature Project) Reproductive assurance is often invoked as an explanation for the evolution of self-fertilization in plants. However, key aspects of this hypothesis have received little empirical support. In this study, I use geographic surveys of pollinator communities along with functional studies of floral trait ...
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(Uploaded by Plazi for the Bat Literature Project) Reproductive assurance is often invoked as an explanation for the evolution of self-fertilization in plants. However, key aspects of this hypothesis have received little empirical support. In this study, I use geographic surveys of pollinator communities along with functional studies of floral trait ...
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Ecology, 2010
Pollen limitation of female fecundity is widespread among angiosperms, a signal that pollinators frequently fail to transfer pollen to fertilize all ovules. Recent surveys have suggested that pollen limitation is associated with floral specialization.
Silvana, Martén-Rodríguez +1 more
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Pollen limitation of female fecundity is widespread among angiosperms, a signal that pollinators frequently fail to transfer pollen to fertilize all ovules. Recent surveys have suggested that pollen limitation is associated with floral specialization.
Silvana, Martén-Rodríguez +1 more
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Context-dependent autonomous self-fertilization yields reproductive assurance and mixed mating
Nature, 2004The evolution of self-fertilization in hermaphrodites is opposed by costs that decrease the value of self progeny relative to that of outcross progeny. However, self-fertilization is common in plants; 20% are highly selfing and 33% are intermediate between selfing and outcrossing.
Susan, Kalisz +2 more
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Evolution; international journal of organic evolution, 2008
Hermaphroditism allows considerable scope for contributing genes to subsequent generations through various mixtures of selfed and outcrossed offspring. The fitness consequences of different family compositions determine the evolutionarily stable mating strategy and depend on the interplay of genetic features, the nature of mating, and factors that ...
Lawrence D, Harder +2 more
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Hermaphroditism allows considerable scope for contributing genes to subsequent generations through various mixtures of selfed and outcrossed offspring. The fitness consequences of different family compositions determine the evolutionarily stable mating strategy and depend on the interplay of genetic features, the nature of mating, and factors that ...
Lawrence D, Harder +2 more
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Reproductive Assurance Through Autogamy in Some Annual Weed Species
Proceedings of the National Academy of Sciences, India Section B: Biological Sciences, 2014Weeds have evolved numerous adaptations to establish, survive and spread rapidly in disturbed habitats. Although prolific seed production is recognized as an important adaptation, studies on their pollination ecology, which is the basis of seed production, have remained neglected.
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Assuring survival of the fittest through reproduction
Journal of Reproductive Immunology, 2009A. Ziegler +3 more
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