Distribuição espacial da variabilidade genética intrapopulacional de Dipteryx alata
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Data
2008-09
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Resumo
The aim of this paper was to evaluate the spatial pattern of the genetic variability among plants,
within local populations of “barueiro” (Dipteryx alata Vogel), using RAPD markers and spatial autocorrelation
analyses. The five RAPD primers used allowed the coding of 45 loci used for standard analyses of diversity,
structure and spatial distribution of genetic variability within each local population. These populations showed
considerable amount of genetic diversity, with an average Hs of 0.314. From the total genetic variation
12% occur among the three local populations studied, indicating that each of these contains a significant
amount of variation. Within each population, this variability is structured with significant and positive spatial
autocorrelation in the first three distance classes, suggesting the existence of neighbor groups of genetically
similar individuals. The size of these neighbor groups, however, varies among local populations; this shows
that other ecological components affected the spatial structure of genetic diversity. Natural populations of
“barueiro” present considerable levels of genetic diversity, based on 45 RAPD loci analysed.
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Spatial autocorrelation, Autocorrelação espacial, baru, conservação, estrutura familiar, fluxo gênico, RAPD., Baru, RAPD, Conservation, Genetic flow, Familiar structure
Citação
SOARES, Thannya Nascimento et al. Distribuição espacial da variabilidade genética de Dipteryx alata. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 4, n. 9, p. 1151-1158, set. 2008.