Cytotype distribution and phylogeography ofHieracium intybaceum(Asteraceae)
نویسندگان
چکیده
منابع مشابه
Diploid and polyploid cytotype distribution in Melampodium cinereum and M. leucanthum (Asteraceae, Heliantheae).
Previous chromosomal studies within Melampodium (Asteraceae, Heliantheae) of Mexico and Central America have documented chromosome numbers n = 9, 10, 11, 12, 18, 20, 23, 25 ± 1, 27, 30, and 33. Some species also have been shown to exhibit infra- and interpopulational polyploidy. The presence of cytotype mixtures is especially pronounced in the white-rayed complex, which occurs in the southweste...
متن کاملEcological segregation drives fine-scale cytotype distribution of Senecio carniolicus in the Eastern Alps.
In order to uncover patterns and processes of segregation of co-existing cytotypes, we investigated a zone in the eastern Alps (Austria) where diploid and hexaploid individuals of the alpine herb Senecio carniolicus Willd. (Asteraceae) co-occur. Linking the fine-scale distribution of cytotypes to environmental and spatial factors revealed segregation along an ecological gradient, which was also...
متن کاملPhylogeography
In the subsequent 20 years as the garden’s director, Maiden seized every opportunity to improve the herbarium. Even internationally destructive events such as World War I provided unexpected additions: one soldier alone donated 300 specimens from Palestine. And a further parcel from Kew revealed 58 acacia and 23 eucalypt specimens collected between 1816 and 1839. Maiden was also occupied by sev...
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Phylogeography is a relatively new discipline that deals with the spatial arrangements of genetic lineages, especially within and among closely related species. The word phylogeography was coined in 1987 (Avise et al., 1987). About a decade earlier, scientists had begun using mitochondrial (mt) DNA to address precisely how conspecific individuals are genealogically linked through shared ancesto...
متن کاملAMOVA and Statistical phylogeography
ij xixjδij , where xi is the frequency of the ith haplotype and δij is the fraction of nucleotides at which haplotypes i and j differ. It shouldn’t come to any surprise to you that just as there is interest in partitioning diversity within and among populations when we’re dealing with simple allelic variation, i.e., Wright’s F -statistics, there is interest in partitioning diversity within and ...
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ژورنال
عنوان ژورنال: Botanical Journal of the Linnean Society
سال: 2015
ISSN: 0024-4074
DOI: 10.1111/boj.12335