Diversidade genética em populações naturais de araticunzeiro (Annona crassiflora Mart.) por meio da análise de seqüências de cpDNA
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Data
2007-09
Título da Revista
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Editor
João Batista Duarte
Resumo
The severe degradation of Cerrado and the predatory
extractivism that threatens many species calls for research to
support future conservation programs. The "araticunzeiro"
(Annona crassiflora Mart.) is a tropical fruit tree species from
Cerrado (Brazilian savannah) with high economic potential.
Eighty-two individuals from eleven natural populations were
submitted to genetic analysis to search for the genetic status of
the species and to guide future conservation strategies. The
analysis of the polymorphism present in sequences of the trnL
of the chloroplastidial genome and further application of the
models associated to the coalescent theory lead to the detection
of high levels of genetic diversity in the species. The results
showed that, in spite of the high level of genetic similarity among
different populations, there is an incipient, but statistically
significant, increasing differentiation process taking place due to
current status of geographical isolation and genetic drift. The
genetic differentiation coefficient among populations was 7.3%.
The spatial genetic divergence analyses showed that genetic
distances are not associated to geographical distances between
populations, suggesting the absence of current gene flow among
them. Populations from well conserved status and down to
dangerous very low levels of genetic diversity were detected.
Descrição
Palavras-chave
Araticum, Diversidade genética, cpDNA, DNA cloroplastidial, Genetic diversity, Chloroplast DNA
Citação
BLANCO, Angel José Vieira; PEREIRA, Marlei de Fátima; COELHO, Alexandre Siqueira Guedes; CHAVES, Lázaro José. Diversidade genética em populações naturais de araticunzeiro (Annona crassiflora Mart.) por meio da análise de seqüências de cpDNA. Pesquisa Agropecuária Tropical, Goiânia, v. 37, n. 3, p. 169-177, jul./set. 2007. Disponível em: <https://www.revistas.ufg.br/pat/article/view/1857/1763>.