Several small: how inbreeding affects conservation of Cariniana legalis Mart. Kuntze (Lecythidaceae) the Brazilian Atlantic Forest's largest tree
| Autor: | David Boshier, Alexandre Magno Sebbenn, O.J. Di-Dio, Roland Vencovsky, Miguel Luiz Menezes Freitas, Evandro Vagner Tambarussi |
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| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
0301 basic medicine Cariniana legalis Conservation genetics Ecology biology Population size Geography Planning and Development Selfing Population genetics Forestry Outcrossing biology.organism_classification Mating system 010603 evolutionary biology 01 natural sciences 03 medical and health sciences 030104 developmental biology Inbreeding |
| Zdroj: | International Forestry Review. 18:502-510 |
| ISSN: | 2053-7778 1465-5489 |
| DOI: | 10.1505/146554816820127550 |
| Popis: | SUMMARY We investigated the impact of population size on genetic diversity, inbreeding and mating system in small remnant stands of the Neotropical tree, Cariniana legalis, using microsatellite loci. All adult trees within three different size stands (4, 22 and 65 trees) were sampled, along with open-pollinated seeds. A number of impacts related to population size were evident. Allelic richness was significantly lower among progeny in the smallest fragment, as was outcrossing rate. Individual tree outcrossing rates were predominantly high, but several trees presented significant mating among relatives. The correlation of paternity within fruits was significantly higher than among fruits in all populations, indicating that the probability of full-sibs being produced is highest within fruits. Our results show that low population size can increase the rate of selfing in C. legalis and that open-pollinated seed from the largest populations may also include inbreeding from mating among relatives. |
| Databáze: | OpenAIRE |
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