Results 261 to 270 of about 21,182 (281)
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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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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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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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The evolution and prevalence of reproductive assurance in the genus Lachenalia
2015Since its proposal by Darwin (1876), the concept of reproductive assurance (RA) has been much discussed, modified and tested. It is hypothesized to occur under pollen- and/or mate-limitation, each of which can arise in a multitude of manners, and RA itself takes many forms.
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Methodology of information reproduction quality assurance in offset ptinting
2019Качество полиграфической продукции при офсетной печати хоть и регулируется по параметрам процесса печати непосредственно в процессе печати, но именно элементы печатной формы играют ключевую роль в формировании качественного оттиска. Кроме того, следует учитывать, что у нас есть регулярные искажения графических характеристик оригинала на разных этапах ...
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