Telocentric fragment chromosomes in Trillium grandiflorum
نویسندگان
چکیده
منابع مشابه
Population Demography and Herbivory of Trillium Grandiflorum
Numerous pedicellate and sessile Trillium species are endemic to eastern North America, where white-tailed deer (Odocoileus virginianus) populations have been growing in recent decades. Deer feed on Trillium plants, and because they often consume all leaves and flowers, the photosynthetic capacity of browsed plants is greatly diminished. To determine if deer can influence Trillium population dy...
متن کاملStructure and Stability of Telocentric Chromosomes in Wheat
In most eukaryotes, centromeres assemble at a single location per chromosome. Naturally occurring telocentric chromosomes (telosomes) with a terminal centromere are rare but do exist. Telosomes arise through misdivision of centromeres in normal chromosomes, and their cytological stability depends on the structure of their kinetochores. The instability of telosomes may be attributed to the relat...
متن کاملSpatial population genetic structure in Trillium grandiflorum: the roles of dispersal, mating, history, and selection.
The roles of the various potential ecological and evolutionary causes of spatial population genetic structure (SPGS) cannot in general be inferred from the extant structure alone. However, a stage-specific analysis can provide clues as to the causes of SPGS. We conducted a stage-specific SPGS analysis of a mapped population of about 2000 Trillium grandiflorum (Liliaceae), a long-lived perennial...
متن کاملLand-use history and plant performance in populations of Trillium grandiflorum
Many forest herbs show reduced frequency in forests growing on former agricultural land (secondary forests) relative to forests that were never cleared for agriculture (primary forests). To explain this pattern, studies of secondary forest colonization by forest herbs have stressed the role of limited seed dispersal, though environmental conditions may also limit colonization. Here I demonstrat...
متن کاملPost-glacial history of Trillium grandiflorum (Melanthiaceae) in eastern North America: inferences from phylogeography.
Dispersal and migration are important processes affecting the evolutionary history and genetics of species. Here we investigate post-glacial migration and gene flow in Trillium grandiflorum (Melanthiaceae), a wide-ranging, forest herb from eastern North America. Using phylogeographic approaches, we examined cpDNA and allozyme diversity in 35 populations of T. grandiflorum sampled from throughou...
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ژورنال
عنوان ژورنال: Heredity
سال: 1960
ISSN: 0018-067X,1365-2540
DOI: 10.1038/hdy.1960.80