Allelic diversity in populations of Solanum lycocarpum A. St.-Hil (Solanaceae) in a protected area and a disturbed environment
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2011
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Resumo
(Allelic diversity in populations of Solanum lycocarpum A. St.-Hil (Solanaceae) in a protected area and a disturbed
environment). Th is study aimed to compare the genetic diversity of populations of Solanum lycocarpum A.St.-Hil
between natural and human disturbed environments, with the assumption that protected areas have greater genetic
diversity than disturbed areas. For this study, two populations were sampled in Goiás State, Brazil. One was located
in a conservation unit, Serra de Caldas Novas State Park, in the Caldas Novas municipality. Th e other was located in a
pasture area in the municipality of Morrinhos. Th e two populations are 41 km apart. We sampled 60 individuals from
each population, which were genotyped with fi ve microsatellite loci (SSR). Th e highest number of alleles was recorded
in the population of the conservation unit, where we found 11 exclusive and fi ve rare alleles. In the disturbed area, we
recorded only three exclusive alleles and one rare allele. Although we did not observe signifi cant inbreeding in these
populations, genetic divergence between them was high (GST (Hedrick)=0.147 =0.147) for a species with long distance seed
dispersal. Th e results corroborate the hypothesis that the population in the less disturbed area harbors greater allelic
diversity. Th ey also confi rm the eff ectiveness of using protected areas to preserve the genetic diversity of the species.
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Cerrado, Diversidade genética, Fluxo gênico, Genética da conservação, Cerrado, Genetic diversity, Gene flow, Conservation genetics
Citação
MOURA, Tânia Maria de et al . Allelic diversity in populations of Solanum lycocarpum A. St.-Hil (Solanaceae) in a protected area and a disturbed environment. Acta Botanica Brasílica, Feira de Santana, v. 25, n. 4, p. 937-940, Oct./Dec. 2011.