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• W2765748302 abstract "Abstract Since tropical trees often have long generation times and relatively small reproductive populations, breeding systems and genetic variation are important for population viability and have consequences for conservation. Miconia albicans is an obligate, diplosporous, apomictic species widespread in the Brazilian Cerrado, the savanna areas in central Brazil and elsewhere in the Neotropics. The genetic variability would be, theoretically, low within these male‐sterile and possibly clonal populations, although some variation would be expected due to recombination during restitutional meiosis. We used ISSR markers to assess genetic diversity of M. albicans and to compare with other tropical trees, including invasive species of Melastomataceae. A total of 120 individuals from six populations were analysed using ten ISSR primers, which produced 153 fully reproducible fragments. The populations of M. albicans presented mean Shannon's information index (I) of 0.244 and expected heterozygosity (H e ) of 0.168. Only two pairs of apparently clonal trees were identified, and genetic diversity was relatively high. A hierarchical amova for all ISSR datasets showed that 74% of the variance was found among populations, while only 26% of the variance was found within populations of this species. Multivariate and Bayesian analyses indicated marked separation between the studied populations. The genetic diversity generated by restitutional meiosis, polyploidy and possibly other genome changes may explain the morpho‐physiological plasticity and the ability of these plants to differentiate and occupy such a wide territory and different environmental conditions. Producing enormous amounts of bird‐dispersed fruits, M. albicans possess weedy potential that may rival other Melastomataceae alien invaders." @default.
• W2765748302 created "2017-11-10" @default.
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• W2765748302 date "2017-11-28" @default.
• W2765748302 modified "2023-10-16" @default.
• W2765748302 title "Unexpectedly high genetic diversity and divergence among populations of the apomictic Neotropical tree <i>Miconia albicans</i>" @default.
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• W2765748302 doi "https://doi.org/10.1111/plb.12654" @default.
• W2765748302 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/29069536" @default.
• W2765748302 hasPublicationYear "2017" @default.
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