Results 271 to 280 of about 3,187,628 (306)
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On the Evolution of Self‐Fertilization in a Metapopulation
International Journal of Plant Sciences, 2008The loss of morphological and physiological mechanisms that prevent self‐fertilization is perhaps the most common evolutionary trend in the flowering plants. It is generally acknowledged that self‐fertilization may often be favored by selection at the individual level, principally by providing reproductive assurance when conditions for vector‐mediated ...
Daniel J. Schoen, Jeremiah W. Busch
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2007
AbstractPerfect (hermaphrodite) flowers can, assuming no other constraints, self-pollinate, and fertilize their own ovules. This guaranteed sexual reproduction gives self-pollinating plants the ability to colonize new habitats, and it is a common trait in weedy species.
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AbstractPerfect (hermaphrodite) flowers can, assuming no other constraints, self-pollinate, and fertilize their own ovules. This guaranteed sexual reproduction gives self-pollinating plants the ability to colonize new habitats, and it is a common trait in weedy species.
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Polyploidy and self‐fertilization in flowering plants
American Journal of Botany, 2007Mating systems directly control the transmission of genes across generations, and understanding the diversity and distribution of mating systems is central to understanding the evolution of any group of organisms. This basic idea has been the motivation for many studies that have explored the relationships between plant mating systems and other ...
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Expectations for Inbreeding Depression on Self-Fertilization of Tetraploids
Biometrics, 1976The contribution to the inbreeding depression from a digenic tetrasomic locus upon self-fertilization involves three genotypic interaction effects which may be thought of as a generalization of the dominance deviation for a diploid locus. It is shown how this contribution may be expressed in terms of these genotypic interaction effects, the gene ...
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Evolutionary Ecology, 1998
The factors responsible for the reproductive success or failure of individuals in small, founding populations have received little attention. Previous work on a small population of smooth cordgrass (Spartina alterniflora) invading San Francisco Bay, California found that most clones flower prolifically but set little or no seed, while a few clones have
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The factors responsible for the reproductive success or failure of individuals in small, founding populations have received little attention. Previous work on a small population of smooth cordgrass (Spartina alterniflora) invading San Francisco Bay, California found that most clones flower prolifically but set little or no seed, while a few clones have
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Durable Resistance in Self-Fertilizing Annuals
1983Durability of resistance varies greatly. It is easy to recognize good levels of resistance. The durability of such a resistance can hardly be assessed on small plots and in a short time span. But over the years experience has accumulated. Many resistances, both of a simple and of a more complex inheritance have shown to be durable.
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SELF-FERTILITY IN BOTRYOTINIA PORRI
Canadian Journal of Botany, 1964Apothecia were produced in culture from mass conidial isolates of Botrylis porri (v. Beyma) Buchw. From these apothecia single ascospore cultures were obtained which produced apothecia in unspermatized dishes. It is concluded that Botryotinia porri is self-fertile.
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CONTRIBUTIONS OF AUTOGAMY AND GEITONOGAMY TO SELF-FERTILIZATION IN A MASS-FLOWERING, CLONAL PLANT
Ecology, 2000Christopher G Eckert
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