GENE FLOW IN CHAMAECRISTA FASCICULATA (LEGUMINOSAE) I. GENE DISPERSAL
نویسندگان
چکیده
منابع مشابه
Quantifying gene flow from spatial genetic structure data in a metapopulation of Chamaecrista fasciculata (Leguminosae).
An extensive allozyme survey was conducted within a natural "meta" population of the native North American annual legume, Chamaecrista fasciculata (Leguminosae) to quantify genetic structure at different spatial scales. Gene flow was then estimated by a recently developed indirect method based on a continuous population model, using pairwise kinship coefficients between individuals. The indirec...
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Pollen dispersal was characterized within a population of the narrowly endemic perennial herb, Centaurea corymbosa, using exclusion-based and likelihood-based paternity analyses carried out on microsatellite data. Data were used to fit a model of pollen dispersal and to estimate the rates of pollen flow and mutation/genotyping error, by developing a new method. Selfing was rare (1.6%). Pollen d...
متن کاملEcotypic differentiation for flood-tolerance and its morphological correlates in Chamaecrista fasciculata
Chamaecristafasciculata is widespread in eastern North America and commonly found on dry sandy soils. In contrast, large seeded C. fasciculata var. macrosperma is restricted to fresh-water tidal marshes of the central coastal plain of Virginia, USA. Greenhouse experiments were conducted to determine if var. macrosperma represents a flood-tolerant ecotype and if flood tolerance is associated wit...
متن کاملIntraspecific hybridization and the recovery of fitness in the native legume Chamaecrista fasciculata.
Genetic incompatibilities and low offspring fitness are characteristic outcomes of hybridization between species. Yet, the creative potential of recombination following hybridization continues to be debated. Here we quantify the outcome of hybridization and recombination between adaptively divergent populations of the North American legume Chamaecrista fasciculata in a large-scale field experim...
متن کاملInbreeding and Outbreeding Depression in Natural Populations of Chamaecrista fasciculata (Fabaceae)
The deleterious consequences of inbreeding have been well documented. There are, however, few empirical studies that have examined the consequences of restoring heterozygosity and hence the fitness of inbred populations by conducting interpopulation crosses and measuring the performance of later-generation hybrids under field conditions. We conducted interpopulation crosses of 100 m to 2000 km,...
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ژورنال
عنوان ژورنال: Evolution
سال: 1991
ISSN: 0014-3820
DOI: 10.1111/j.1558-5646.1991.tb04413.x